| 1 | import __builtin__
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| 2 | import gc
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| 3 | import sys
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| 4 | import types
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| 5 | import unittest
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| 6 | import weakref
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| 7 |
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| 8 | from copy import deepcopy
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| 9 | from test import test_support
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| 10 |
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| 11 |
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| 12 | class OperatorsTest(unittest.TestCase):
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| 13 |
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| 14 | def __init__(self, *args, **kwargs):
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| 15 | unittest.TestCase.__init__(self, *args, **kwargs)
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| 16 | self.binops = {
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| 17 | 'add': '+',
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| 18 | 'sub': '-',
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| 19 | 'mul': '*',
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| 20 | 'div': '/',
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| 21 | 'divmod': 'divmod',
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| 22 | 'pow': '**',
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| 23 | 'lshift': '<<',
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| 24 | 'rshift': '>>',
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| 25 | 'and': '&',
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| 26 | 'xor': '^',
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| 27 | 'or': '|',
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| 28 | 'cmp': 'cmp',
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| 29 | 'lt': '<',
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| 30 | 'le': '<=',
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| 31 | 'eq': '==',
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| 32 | 'ne': '!=',
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| 33 | 'gt': '>',
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| 34 | 'ge': '>=',
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| 35 | }
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| 36 |
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| 37 | for name, expr in self.binops.items():
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| 38 | if expr.islower():
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| 39 | expr = expr + "(a, b)"
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| 40 | else:
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| 41 | expr = 'a %s b' % expr
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| 42 | self.binops[name] = expr
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| 43 |
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| 44 | self.unops = {
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| 45 | 'pos': '+',
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| 46 | 'neg': '-',
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| 47 | 'abs': 'abs',
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| 48 | 'invert': '~',
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| 49 | 'int': 'int',
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| 50 | 'long': 'long',
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| 51 | 'float': 'float',
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| 52 | 'oct': 'oct',
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| 53 | 'hex': 'hex',
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| 54 | }
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| 55 |
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| 56 | for name, expr in self.unops.items():
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| 57 | if expr.islower():
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| 58 | expr = expr + "(a)"
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| 59 | else:
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| 60 | expr = '%s a' % expr
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| 61 | self.unops[name] = expr
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| 62 |
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| 63 | def unop_test(self, a, res, expr="len(a)", meth="__len__"):
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| 64 | d = {'a': a}
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| 65 | self.assertEqual(eval(expr, d), res)
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| 66 | t = type(a)
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| 67 | m = getattr(t, meth)
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| 68 |
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| 69 | # Find method in parent class
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| 70 | while meth not in t.__dict__:
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| 71 | t = t.__bases__[0]
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| 72 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 73 | # method object; the getattr() below obtains its underlying function.
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| 74 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 75 | self.assertEqual(m(a), res)
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| 76 | bm = getattr(a, meth)
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| 77 | self.assertEqual(bm(), res)
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| 78 |
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| 79 | def binop_test(self, a, b, res, expr="a+b", meth="__add__"):
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| 80 | d = {'a': a, 'b': b}
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| 81 |
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| 82 | # XXX Hack so this passes before 2.3 when -Qnew is specified.
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| 83 | if meth == "__div__" and 1/2 == 0.5:
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| 84 | meth = "__truediv__"
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| 85 |
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| 86 | if meth == '__divmod__': pass
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| 87 |
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| 88 | self.assertEqual(eval(expr, d), res)
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| 89 | t = type(a)
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| 90 | m = getattr(t, meth)
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| 91 | while meth not in t.__dict__:
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| 92 | t = t.__bases__[0]
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| 93 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 94 | # method object; the getattr() below obtains its underlying function.
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| 95 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 96 | self.assertEqual(m(a, b), res)
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| 97 | bm = getattr(a, meth)
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| 98 | self.assertEqual(bm(b), res)
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| 99 |
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| 100 | def ternop_test(self, a, b, c, res, expr="a[b:c]", meth="__getslice__"):
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| 101 | d = {'a': a, 'b': b, 'c': c}
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| 102 | self.assertEqual(eval(expr, d), res)
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| 103 | t = type(a)
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| 104 | m = getattr(t, meth)
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| 105 | while meth not in t.__dict__:
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| 106 | t = t.__bases__[0]
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| 107 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 108 | # method object; the getattr() below obtains its underlying function.
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| 109 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 110 | self.assertEqual(m(a, b, c), res)
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| 111 | bm = getattr(a, meth)
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| 112 | self.assertEqual(bm(b, c), res)
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| 113 |
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| 114 | def setop_test(self, a, b, res, stmt="a+=b", meth="__iadd__"):
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| 115 | d = {'a': deepcopy(a), 'b': b}
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| 116 | exec stmt in d
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| 117 | self.assertEqual(d['a'], res)
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| 118 | t = type(a)
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| 119 | m = getattr(t, meth)
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| 120 | while meth not in t.__dict__:
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| 121 | t = t.__bases__[0]
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| 122 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 123 | # method object; the getattr() below obtains its underlying function.
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| 124 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 125 | d['a'] = deepcopy(a)
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| 126 | m(d['a'], b)
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| 127 | self.assertEqual(d['a'], res)
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| 128 | d['a'] = deepcopy(a)
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| 129 | bm = getattr(d['a'], meth)
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| 130 | bm(b)
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| 131 | self.assertEqual(d['a'], res)
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| 132 |
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| 133 | def set2op_test(self, a, b, c, res, stmt="a[b]=c", meth="__setitem__"):
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| 134 | d = {'a': deepcopy(a), 'b': b, 'c': c}
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| 135 | exec stmt in d
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| 136 | self.assertEqual(d['a'], res)
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| 137 | t = type(a)
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| 138 | m = getattr(t, meth)
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| 139 | while meth not in t.__dict__:
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| 140 | t = t.__bases__[0]
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| 141 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 142 | # method object; the getattr() below obtains its underlying function.
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| 143 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 144 | d['a'] = deepcopy(a)
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| 145 | m(d['a'], b, c)
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| 146 | self.assertEqual(d['a'], res)
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| 147 | d['a'] = deepcopy(a)
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| 148 | bm = getattr(d['a'], meth)
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| 149 | bm(b, c)
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| 150 | self.assertEqual(d['a'], res)
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| 151 |
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| 152 | def set3op_test(self, a, b, c, d, res, stmt="a[b:c]=d", meth="__setslice__"):
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| 153 | dictionary = {'a': deepcopy(a), 'b': b, 'c': c, 'd': d}
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| 154 | exec stmt in dictionary
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| 155 | self.assertEqual(dictionary['a'], res)
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| 156 | t = type(a)
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| 157 | while meth not in t.__dict__:
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| 158 | t = t.__bases__[0]
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| 159 | m = getattr(t, meth)
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| 160 | # in some implementations (e.g. PyPy), 'm' can be a regular unbound
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| 161 | # method object; the getattr() below obtains its underlying function.
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| 162 | self.assertEqual(getattr(m, 'im_func', m), t.__dict__[meth])
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| 163 | dictionary['a'] = deepcopy(a)
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| 164 | m(dictionary['a'], b, c, d)
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| 165 | self.assertEqual(dictionary['a'], res)
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| 166 | dictionary['a'] = deepcopy(a)
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| 167 | bm = getattr(dictionary['a'], meth)
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| 168 | bm(b, c, d)
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| 169 | self.assertEqual(dictionary['a'], res)
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| 170 |
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| 171 | def test_lists(self):
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| 172 | # Testing list operations...
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| 173 | # Asserts are within individual test methods
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| 174 | self.binop_test([1], [2], [1,2], "a+b", "__add__")
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| 175 | self.binop_test([1,2,3], 2, 1, "b in a", "__contains__")
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| 176 | self.binop_test([1,2,3], 4, 0, "b in a", "__contains__")
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| 177 | self.binop_test([1,2,3], 1, 2, "a[b]", "__getitem__")
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| 178 | self.ternop_test([1,2,3], 0, 2, [1,2], "a[b:c]", "__getslice__")
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| 179 | self.setop_test([1], [2], [1,2], "a+=b", "__iadd__")
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| 180 | self.setop_test([1,2], 3, [1,2,1,2,1,2], "a*=b", "__imul__")
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| 181 | self.unop_test([1,2,3], 3, "len(a)", "__len__")
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| 182 | self.binop_test([1,2], 3, [1,2,1,2,1,2], "a*b", "__mul__")
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| 183 | self.binop_test([1,2], 3, [1,2,1,2,1,2], "b*a", "__rmul__")
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| 184 | self.set2op_test([1,2], 1, 3, [1,3], "a[b]=c", "__setitem__")
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| 185 | self.set3op_test([1,2,3,4], 1, 3, [5,6], [1,5,6,4], "a[b:c]=d",
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| 186 | "__setslice__")
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| 187 |
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| 188 | def test_dicts(self):
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| 189 | # Testing dict operations...
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| 190 | if hasattr(dict, '__cmp__'): # PyPy has only rich comparison on dicts
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| 191 | self.binop_test({1:2}, {2:1}, -1, "cmp(a,b)", "__cmp__")
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| 192 | else:
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| 193 | self.binop_test({1:2}, {2:1}, True, "a < b", "__lt__")
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| 194 | self.binop_test({1:2,3:4}, 1, 1, "b in a", "__contains__")
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| 195 | self.binop_test({1:2,3:4}, 2, 0, "b in a", "__contains__")
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| 196 | self.binop_test({1:2,3:4}, 1, 2, "a[b]", "__getitem__")
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| 197 |
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| 198 | d = {1:2, 3:4}
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| 199 | l1 = []
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| 200 | for i in d.keys():
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| 201 | l1.append(i)
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| 202 | l = []
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| 203 | for i in iter(d):
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| 204 | l.append(i)
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| 205 | self.assertEqual(l, l1)
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| 206 | l = []
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| 207 | for i in d.__iter__():
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| 208 | l.append(i)
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| 209 | self.assertEqual(l, l1)
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| 210 | l = []
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| 211 | for i in dict.__iter__(d):
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| 212 | l.append(i)
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| 213 | self.assertEqual(l, l1)
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| 214 | d = {1:2, 3:4}
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| 215 | self.unop_test(d, 2, "len(a)", "__len__")
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| 216 | self.assertEqual(eval(repr(d), {}), d)
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| 217 | self.assertEqual(eval(d.__repr__(), {}), d)
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| 218 | self.set2op_test({1:2,3:4}, 2, 3, {1:2,2:3,3:4}, "a[b]=c",
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| 219 | "__setitem__")
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| 220 |
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| 221 | # Tests for unary and binary operators
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| 222 | def number_operators(self, a, b, skip=[]):
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| 223 | dict = {'a': a, 'b': b}
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| 224 |
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| 225 | for name, expr in self.binops.items():
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| 226 | if name not in skip:
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| 227 | name = "__%s__" % name
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| 228 | if hasattr(a, name):
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| 229 | res = eval(expr, dict)
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| 230 | self.binop_test(a, b, res, expr, name)
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| 231 |
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| 232 | for name, expr in self.unops.items():
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| 233 | if name not in skip:
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| 234 | name = "__%s__" % name
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| 235 | if hasattr(a, name):
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| 236 | res = eval(expr, dict)
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| 237 | self.unop_test(a, res, expr, name)
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| 238 |
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| 239 | def test_ints(self):
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| 240 | # Testing int operations...
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| 241 | self.number_operators(100, 3)
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| 242 | # The following crashes in Python 2.2
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| 243 | self.assertEqual((1).__nonzero__(), 1)
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| 244 | self.assertEqual((0).__nonzero__(), 0)
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| 245 | # This returns 'NotImplemented' in Python 2.2
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| 246 | class C(int):
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| 247 | def __add__(self, other):
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| 248 | return NotImplemented
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| 249 | self.assertEqual(C(5L), 5)
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| 250 | try:
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| 251 | C() + ""
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| 252 | except TypeError:
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| 253 | pass
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| 254 | else:
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| 255 | self.fail("NotImplemented should have caused TypeError")
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| 256 | try:
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| 257 | C(sys.maxint+1)
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| 258 | except OverflowError:
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| 259 | pass
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| 260 | else:
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| 261 | self.fail("should have raised OverflowError")
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| 262 |
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| 263 | def test_longs(self):
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| 264 | # Testing long operations...
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| 265 | self.number_operators(100L, 3L)
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| 266 |
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| 267 | def test_floats(self):
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| 268 | # Testing float operations...
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| 269 | self.number_operators(100.0, 3.0)
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| 270 |
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| 271 | def test_complexes(self):
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| 272 | # Testing complex operations...
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| 273 | self.number_operators(100.0j, 3.0j, skip=['lt', 'le', 'gt', 'ge',
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| 274 | 'int', 'long', 'float'])
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| 275 |
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| 276 | class Number(complex):
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| 277 | __slots__ = ['prec']
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| 278 | def __new__(cls, *args, **kwds):
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| 279 | result = complex.__new__(cls, *args)
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| 280 | result.prec = kwds.get('prec', 12)
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| 281 | return result
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| 282 | def __repr__(self):
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| 283 | prec = self.prec
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| 284 | if self.imag == 0.0:
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| 285 | return "%.*g" % (prec, self.real)
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| 286 | if self.real == 0.0:
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| 287 | return "%.*gj" % (prec, self.imag)
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| 288 | return "(%.*g+%.*gj)" % (prec, self.real, prec, self.imag)
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| 289 | __str__ = __repr__
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| 290 |
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| 291 | a = Number(3.14, prec=6)
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| 292 | self.assertEqual(repr(a), "3.14")
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| 293 | self.assertEqual(a.prec, 6)
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| 294 |
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| 295 | a = Number(a, prec=2)
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| 296 | self.assertEqual(repr(a), "3.1")
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| 297 | self.assertEqual(a.prec, 2)
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| 298 |
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| 299 | a = Number(234.5)
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| 300 | self.assertEqual(repr(a), "234.5")
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| 301 | self.assertEqual(a.prec, 12)
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| 302 |
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| 303 | @test_support.impl_detail("the module 'xxsubtype' is internal")
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| 304 | def test_spam_lists(self):
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| 305 | # Testing spamlist operations...
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| 306 | import copy, xxsubtype as spam
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| 307 |
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| 308 | def spamlist(l, memo=None):
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| 309 | import xxsubtype as spam
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| 310 | return spam.spamlist(l)
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| 311 |
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| 312 | # This is an ugly hack:
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| 313 | copy._deepcopy_dispatch[spam.spamlist] = spamlist
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| 314 |
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| 315 | self.binop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+b",
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| 316 | "__add__")
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| 317 | self.binop_test(spamlist([1,2,3]), 2, 1, "b in a", "__contains__")
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| 318 | self.binop_test(spamlist([1,2,3]), 4, 0, "b in a", "__contains__")
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| 319 | self.binop_test(spamlist([1,2,3]), 1, 2, "a[b]", "__getitem__")
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| 320 | self.ternop_test(spamlist([1,2,3]), 0, 2, spamlist([1,2]), "a[b:c]",
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| 321 | "__getslice__")
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| 322 | self.setop_test(spamlist([1]), spamlist([2]), spamlist([1,2]), "a+=b",
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| 323 | "__iadd__")
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| 324 | self.setop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*=b",
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| 325 | "__imul__")
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| 326 | self.unop_test(spamlist([1,2,3]), 3, "len(a)", "__len__")
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| 327 | self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "a*b",
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| 328 | "__mul__")
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| 329 | self.binop_test(spamlist([1,2]), 3, spamlist([1,2,1,2,1,2]), "b*a",
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| 330 | "__rmul__")
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| 331 | self.set2op_test(spamlist([1,2]), 1, 3, spamlist([1,3]), "a[b]=c",
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| 332 | "__setitem__")
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| 333 | self.set3op_test(spamlist([1,2,3,4]), 1, 3, spamlist([5,6]),
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| 334 | spamlist([1,5,6,4]), "a[b:c]=d", "__setslice__")
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| 335 | # Test subclassing
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| 336 | class C(spam.spamlist):
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| 337 | def foo(self): return 1
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| 338 | a = C()
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| 339 | self.assertEqual(a, [])
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| 340 | self.assertEqual(a.foo(), 1)
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| 341 | a.append(100)
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| 342 | self.assertEqual(a, [100])
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| 343 | self.assertEqual(a.getstate(), 0)
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| 344 | a.setstate(42)
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| 345 | self.assertEqual(a.getstate(), 42)
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| 346 |
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| 347 | @test_support.impl_detail("the module 'xxsubtype' is internal")
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| 348 | def test_spam_dicts(self):
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| 349 | # Testing spamdict operations...
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| 350 | import copy, xxsubtype as spam
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| 351 | def spamdict(d, memo=None):
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| 352 | import xxsubtype as spam
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| 353 | sd = spam.spamdict()
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| 354 | for k, v in d.items():
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| 355 | sd[k] = v
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| 356 | return sd
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| 357 | # This is an ugly hack:
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| 358 | copy._deepcopy_dispatch[spam.spamdict] = spamdict
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| 359 |
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| 360 | self.binop_test(spamdict({1:2}), spamdict({2:1}), -1, "cmp(a,b)",
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| 361 | "__cmp__")
|
|---|
| 362 | self.binop_test(spamdict({1:2,3:4}), 1, 1, "b in a", "__contains__")
|
|---|
| 363 | self.binop_test(spamdict({1:2,3:4}), 2, 0, "b in a", "__contains__")
|
|---|
| 364 | self.binop_test(spamdict({1:2,3:4}), 1, 2, "a[b]", "__getitem__")
|
|---|
| 365 | d = spamdict({1:2,3:4})
|
|---|
| 366 | l1 = []
|
|---|
| 367 | for i in d.keys():
|
|---|
| 368 | l1.append(i)
|
|---|
| 369 | l = []
|
|---|
| 370 | for i in iter(d):
|
|---|
| 371 | l.append(i)
|
|---|
| 372 | self.assertEqual(l, l1)
|
|---|
| 373 | l = []
|
|---|
| 374 | for i in d.__iter__():
|
|---|
| 375 | l.append(i)
|
|---|
| 376 | self.assertEqual(l, l1)
|
|---|
| 377 | l = []
|
|---|
| 378 | for i in type(spamdict({})).__iter__(d):
|
|---|
| 379 | l.append(i)
|
|---|
| 380 | self.assertEqual(l, l1)
|
|---|
| 381 | straightd = {1:2, 3:4}
|
|---|
| 382 | spamd = spamdict(straightd)
|
|---|
| 383 | self.unop_test(spamd, 2, "len(a)", "__len__")
|
|---|
| 384 | self.unop_test(spamd, repr(straightd), "repr(a)", "__repr__")
|
|---|
| 385 | self.set2op_test(spamdict({1:2,3:4}), 2, 3, spamdict({1:2,2:3,3:4}),
|
|---|
| 386 | "a[b]=c", "__setitem__")
|
|---|
| 387 | # Test subclassing
|
|---|
| 388 | class C(spam.spamdict):
|
|---|
| 389 | def foo(self): return 1
|
|---|
| 390 | a = C()
|
|---|
| 391 | self.assertEqual(a.items(), [])
|
|---|
| 392 | self.assertEqual(a.foo(), 1)
|
|---|
| 393 | a['foo'] = 'bar'
|
|---|
| 394 | self.assertEqual(a.items(), [('foo', 'bar')])
|
|---|
| 395 | self.assertEqual(a.getstate(), 0)
|
|---|
| 396 | a.setstate(100)
|
|---|
| 397 | self.assertEqual(a.getstate(), 100)
|
|---|
| 398 |
|
|---|
| 399 | class ClassPropertiesAndMethods(unittest.TestCase):
|
|---|
| 400 |
|
|---|
| 401 | def test_python_dicts(self):
|
|---|
| 402 | # Testing Python subclass of dict...
|
|---|
| 403 | self.assertTrue(issubclass(dict, dict))
|
|---|
| 404 | self.assertIsInstance({}, dict)
|
|---|
| 405 | d = dict()
|
|---|
| 406 | self.assertEqual(d, {})
|
|---|
| 407 | self.assertTrue(d.__class__ is dict)
|
|---|
| 408 | self.assertIsInstance(d, dict)
|
|---|
| 409 | class C(dict):
|
|---|
| 410 | state = -1
|
|---|
| 411 | def __init__(self_local, *a, **kw):
|
|---|
| 412 | if a:
|
|---|
| 413 | self.assertEqual(len(a), 1)
|
|---|
| 414 | self_local.state = a[0]
|
|---|
| 415 | if kw:
|
|---|
| 416 | for k, v in kw.items():
|
|---|
| 417 | self_local[v] = k
|
|---|
| 418 | def __getitem__(self, key):
|
|---|
| 419 | return self.get(key, 0)
|
|---|
| 420 | def __setitem__(self_local, key, value):
|
|---|
| 421 | self.assertIsInstance(key, type(0))
|
|---|
| 422 | dict.__setitem__(self_local, key, value)
|
|---|
| 423 | def setstate(self, state):
|
|---|
| 424 | self.state = state
|
|---|
| 425 | def getstate(self):
|
|---|
| 426 | return self.state
|
|---|
| 427 | self.assertTrue(issubclass(C, dict))
|
|---|
| 428 | a1 = C(12)
|
|---|
| 429 | self.assertEqual(a1.state, 12)
|
|---|
| 430 | a2 = C(foo=1, bar=2)
|
|---|
| 431 | self.assertEqual(a2[1] == 'foo' and a2[2], 'bar')
|
|---|
| 432 | a = C()
|
|---|
| 433 | self.assertEqual(a.state, -1)
|
|---|
| 434 | self.assertEqual(a.getstate(), -1)
|
|---|
| 435 | a.setstate(0)
|
|---|
| 436 | self.assertEqual(a.state, 0)
|
|---|
| 437 | self.assertEqual(a.getstate(), 0)
|
|---|
| 438 | a.setstate(10)
|
|---|
| 439 | self.assertEqual(a.state, 10)
|
|---|
| 440 | self.assertEqual(a.getstate(), 10)
|
|---|
| 441 | self.assertEqual(a[42], 0)
|
|---|
| 442 | a[42] = 24
|
|---|
| 443 | self.assertEqual(a[42], 24)
|
|---|
| 444 | N = 50
|
|---|
| 445 | for i in range(N):
|
|---|
| 446 | a[i] = C()
|
|---|
| 447 | for j in range(N):
|
|---|
| 448 | a[i][j] = i*j
|
|---|
| 449 | for i in range(N):
|
|---|
| 450 | for j in range(N):
|
|---|
| 451 | self.assertEqual(a[i][j], i*j)
|
|---|
| 452 |
|
|---|
| 453 | def test_python_lists(self):
|
|---|
| 454 | # Testing Python subclass of list...
|
|---|
| 455 | class C(list):
|
|---|
| 456 | def __getitem__(self, i):
|
|---|
| 457 | return list.__getitem__(self, i) + 100
|
|---|
| 458 | def __getslice__(self, i, j):
|
|---|
| 459 | return (i, j)
|
|---|
| 460 | a = C()
|
|---|
| 461 | a.extend([0,1,2])
|
|---|
| 462 | self.assertEqual(a[0], 100)
|
|---|
| 463 | self.assertEqual(a[1], 101)
|
|---|
| 464 | self.assertEqual(a[2], 102)
|
|---|
| 465 | self.assertEqual(a[100:200], (100,200))
|
|---|
| 466 |
|
|---|
| 467 | def test_metaclass(self):
|
|---|
| 468 | # Testing __metaclass__...
|
|---|
| 469 | class C:
|
|---|
| 470 | __metaclass__ = type
|
|---|
| 471 | def __init__(self):
|
|---|
| 472 | self.__state = 0
|
|---|
| 473 | def getstate(self):
|
|---|
| 474 | return self.__state
|
|---|
| 475 | def setstate(self, state):
|
|---|
| 476 | self.__state = state
|
|---|
| 477 | a = C()
|
|---|
| 478 | self.assertEqual(a.getstate(), 0)
|
|---|
| 479 | a.setstate(10)
|
|---|
| 480 | self.assertEqual(a.getstate(), 10)
|
|---|
| 481 | class D:
|
|---|
| 482 | class __metaclass__(type):
|
|---|
| 483 | def myself(cls): return cls
|
|---|
| 484 | self.assertEqual(D.myself(), D)
|
|---|
| 485 | d = D()
|
|---|
| 486 | self.assertEqual(d.__class__, D)
|
|---|
| 487 | class M1(type):
|
|---|
| 488 | def __new__(cls, name, bases, dict):
|
|---|
| 489 | dict['__spam__'] = 1
|
|---|
| 490 | return type.__new__(cls, name, bases, dict)
|
|---|
| 491 | class C:
|
|---|
| 492 | __metaclass__ = M1
|
|---|
| 493 | self.assertEqual(C.__spam__, 1)
|
|---|
| 494 | c = C()
|
|---|
| 495 | self.assertEqual(c.__spam__, 1)
|
|---|
| 496 |
|
|---|
| 497 | class _instance(object):
|
|---|
| 498 | pass
|
|---|
| 499 | class M2(object):
|
|---|
| 500 | @staticmethod
|
|---|
| 501 | def __new__(cls, name, bases, dict):
|
|---|
| 502 | self = object.__new__(cls)
|
|---|
| 503 | self.name = name
|
|---|
| 504 | self.bases = bases
|
|---|
| 505 | self.dict = dict
|
|---|
| 506 | return self
|
|---|
| 507 | def __call__(self):
|
|---|
| 508 | it = _instance()
|
|---|
| 509 | # Early binding of methods
|
|---|
| 510 | for key in self.dict:
|
|---|
| 511 | if key.startswith("__"):
|
|---|
| 512 | continue
|
|---|
| 513 | setattr(it, key, self.dict[key].__get__(it, self))
|
|---|
| 514 | return it
|
|---|
| 515 | class C:
|
|---|
| 516 | __metaclass__ = M2
|
|---|
| 517 | def spam(self):
|
|---|
| 518 | return 42
|
|---|
| 519 | self.assertEqual(C.name, 'C')
|
|---|
| 520 | self.assertEqual(C.bases, ())
|
|---|
| 521 | self.assertIn('spam', C.dict)
|
|---|
| 522 | c = C()
|
|---|
| 523 | self.assertEqual(c.spam(), 42)
|
|---|
| 524 |
|
|---|
| 525 | # More metaclass examples
|
|---|
| 526 |
|
|---|
| 527 | class autosuper(type):
|
|---|
| 528 | # Automatically add __super to the class
|
|---|
| 529 | # This trick only works for dynamic classes
|
|---|
| 530 | def __new__(metaclass, name, bases, dict):
|
|---|
| 531 | cls = super(autosuper, metaclass).__new__(metaclass,
|
|---|
| 532 | name, bases, dict)
|
|---|
| 533 | # Name mangling for __super removes leading underscores
|
|---|
| 534 | while name[:1] == "_":
|
|---|
| 535 | name = name[1:]
|
|---|
| 536 | if name:
|
|---|
| 537 | name = "_%s__super" % name
|
|---|
| 538 | else:
|
|---|
| 539 | name = "__super"
|
|---|
| 540 | setattr(cls, name, super(cls))
|
|---|
| 541 | return cls
|
|---|
| 542 | class A:
|
|---|
| 543 | __metaclass__ = autosuper
|
|---|
| 544 | def meth(self):
|
|---|
| 545 | return "A"
|
|---|
| 546 | class B(A):
|
|---|
| 547 | def meth(self):
|
|---|
| 548 | return "B" + self.__super.meth()
|
|---|
| 549 | class C(A):
|
|---|
| 550 | def meth(self):
|
|---|
| 551 | return "C" + self.__super.meth()
|
|---|
| 552 | class D(C, B):
|
|---|
| 553 | def meth(self):
|
|---|
| 554 | return "D" + self.__super.meth()
|
|---|
| 555 | self.assertEqual(D().meth(), "DCBA")
|
|---|
| 556 | class E(B, C):
|
|---|
| 557 | def meth(self):
|
|---|
| 558 | return "E" + self.__super.meth()
|
|---|
| 559 | self.assertEqual(E().meth(), "EBCA")
|
|---|
| 560 |
|
|---|
| 561 | class autoproperty(type):
|
|---|
| 562 | # Automatically create property attributes when methods
|
|---|
| 563 | # named _get_x and/or _set_x are found
|
|---|
| 564 | def __new__(metaclass, name, bases, dict):
|
|---|
| 565 | hits = {}
|
|---|
| 566 | for key, val in dict.iteritems():
|
|---|
| 567 | if key.startswith("_get_"):
|
|---|
| 568 | key = key[5:]
|
|---|
| 569 | get, set = hits.get(key, (None, None))
|
|---|
| 570 | get = val
|
|---|
| 571 | hits[key] = get, set
|
|---|
| 572 | elif key.startswith("_set_"):
|
|---|
| 573 | key = key[5:]
|
|---|
| 574 | get, set = hits.get(key, (None, None))
|
|---|
| 575 | set = val
|
|---|
| 576 | hits[key] = get, set
|
|---|
| 577 | for key, (get, set) in hits.iteritems():
|
|---|
| 578 | dict[key] = property(get, set)
|
|---|
| 579 | return super(autoproperty, metaclass).__new__(metaclass,
|
|---|
| 580 | name, bases, dict)
|
|---|
| 581 | class A:
|
|---|
| 582 | __metaclass__ = autoproperty
|
|---|
| 583 | def _get_x(self):
|
|---|
| 584 | return -self.__x
|
|---|
| 585 | def _set_x(self, x):
|
|---|
| 586 | self.__x = -x
|
|---|
| 587 | a = A()
|
|---|
| 588 | self.assertTrue(not hasattr(a, "x"))
|
|---|
| 589 | a.x = 12
|
|---|
| 590 | self.assertEqual(a.x, 12)
|
|---|
| 591 | self.assertEqual(a._A__x, -12)
|
|---|
| 592 |
|
|---|
| 593 | class multimetaclass(autoproperty, autosuper):
|
|---|
| 594 | # Merge of multiple cooperating metaclasses
|
|---|
| 595 | pass
|
|---|
| 596 | class A:
|
|---|
| 597 | __metaclass__ = multimetaclass
|
|---|
| 598 | def _get_x(self):
|
|---|
| 599 | return "A"
|
|---|
| 600 | class B(A):
|
|---|
| 601 | def _get_x(self):
|
|---|
| 602 | return "B" + self.__super._get_x()
|
|---|
| 603 | class C(A):
|
|---|
| 604 | def _get_x(self):
|
|---|
| 605 | return "C" + self.__super._get_x()
|
|---|
| 606 | class D(C, B):
|
|---|
| 607 | def _get_x(self):
|
|---|
| 608 | return "D" + self.__super._get_x()
|
|---|
| 609 | self.assertEqual(D().x, "DCBA")
|
|---|
| 610 |
|
|---|
| 611 | # Make sure type(x) doesn't call x.__class__.__init__
|
|---|
| 612 | class T(type):
|
|---|
| 613 | counter = 0
|
|---|
| 614 | def __init__(self, *args):
|
|---|
| 615 | T.counter += 1
|
|---|
| 616 | class C:
|
|---|
| 617 | __metaclass__ = T
|
|---|
| 618 | self.assertEqual(T.counter, 1)
|
|---|
| 619 | a = C()
|
|---|
| 620 | self.assertEqual(type(a), C)
|
|---|
| 621 | self.assertEqual(T.counter, 1)
|
|---|
| 622 |
|
|---|
| 623 | class C(object): pass
|
|---|
| 624 | c = C()
|
|---|
| 625 | try: c()
|
|---|
| 626 | except TypeError: pass
|
|---|
| 627 | else: self.fail("calling object w/o call method should raise "
|
|---|
| 628 | "TypeError")
|
|---|
| 629 |
|
|---|
| 630 | # Testing code to find most derived baseclass
|
|---|
| 631 | class A(type):
|
|---|
| 632 | def __new__(*args, **kwargs):
|
|---|
| 633 | return type.__new__(*args, **kwargs)
|
|---|
| 634 |
|
|---|
| 635 | class B(object):
|
|---|
| 636 | pass
|
|---|
| 637 |
|
|---|
| 638 | class C(object):
|
|---|
| 639 | __metaclass__ = A
|
|---|
| 640 |
|
|---|
| 641 | # The most derived metaclass of D is A rather than type.
|
|---|
| 642 | class D(B, C):
|
|---|
| 643 | pass
|
|---|
| 644 |
|
|---|
| 645 | def test_module_subclasses(self):
|
|---|
| 646 | # Testing Python subclass of module...
|
|---|
| 647 | log = []
|
|---|
| 648 | MT = type(sys)
|
|---|
| 649 | class MM(MT):
|
|---|
| 650 | def __init__(self, name):
|
|---|
| 651 | MT.__init__(self, name)
|
|---|
| 652 | def __getattribute__(self, name):
|
|---|
| 653 | log.append(("getattr", name))
|
|---|
| 654 | return MT.__getattribute__(self, name)
|
|---|
| 655 | def __setattr__(self, name, value):
|
|---|
| 656 | log.append(("setattr", name, value))
|
|---|
| 657 | MT.__setattr__(self, name, value)
|
|---|
| 658 | def __delattr__(self, name):
|
|---|
| 659 | log.append(("delattr", name))
|
|---|
| 660 | MT.__delattr__(self, name)
|
|---|
| 661 | a = MM("a")
|
|---|
| 662 | a.foo = 12
|
|---|
| 663 | x = a.foo
|
|---|
| 664 | del a.foo
|
|---|
| 665 | self.assertEqual(log, [("setattr", "foo", 12),
|
|---|
| 666 | ("getattr", "foo"),
|
|---|
| 667 | ("delattr", "foo")])
|
|---|
| 668 |
|
|---|
| 669 | # http://python.org/sf/1174712
|
|---|
| 670 | try:
|
|---|
| 671 | class Module(types.ModuleType, str):
|
|---|
| 672 | pass
|
|---|
| 673 | except TypeError:
|
|---|
| 674 | pass
|
|---|
| 675 | else:
|
|---|
| 676 | self.fail("inheriting from ModuleType and str at the same time "
|
|---|
| 677 | "should fail")
|
|---|
| 678 |
|
|---|
| 679 | def test_multiple_inheritence(self):
|
|---|
| 680 | # Testing multiple inheritance...
|
|---|
| 681 | class C(object):
|
|---|
| 682 | def __init__(self):
|
|---|
| 683 | self.__state = 0
|
|---|
| 684 | def getstate(self):
|
|---|
| 685 | return self.__state
|
|---|
| 686 | def setstate(self, state):
|
|---|
| 687 | self.__state = state
|
|---|
| 688 | a = C()
|
|---|
| 689 | self.assertEqual(a.getstate(), 0)
|
|---|
| 690 | a.setstate(10)
|
|---|
| 691 | self.assertEqual(a.getstate(), 10)
|
|---|
| 692 | class D(dict, C):
|
|---|
| 693 | def __init__(self):
|
|---|
| 694 | type({}).__init__(self)
|
|---|
| 695 | C.__init__(self)
|
|---|
| 696 | d = D()
|
|---|
| 697 | self.assertEqual(d.keys(), [])
|
|---|
| 698 | d["hello"] = "world"
|
|---|
| 699 | self.assertEqual(d.items(), [("hello", "world")])
|
|---|
| 700 | self.assertEqual(d["hello"], "world")
|
|---|
| 701 | self.assertEqual(d.getstate(), 0)
|
|---|
| 702 | d.setstate(10)
|
|---|
| 703 | self.assertEqual(d.getstate(), 10)
|
|---|
| 704 | self.assertEqual(D.__mro__, (D, dict, C, object))
|
|---|
| 705 |
|
|---|
| 706 | # SF bug #442833
|
|---|
| 707 | class Node(object):
|
|---|
| 708 | def __int__(self):
|
|---|
| 709 | return int(self.foo())
|
|---|
| 710 | def foo(self):
|
|---|
| 711 | return "23"
|
|---|
| 712 | class Frag(Node, list):
|
|---|
| 713 | def foo(self):
|
|---|
| 714 | return "42"
|
|---|
| 715 | self.assertEqual(Node().__int__(), 23)
|
|---|
| 716 | self.assertEqual(int(Node()), 23)
|
|---|
| 717 | self.assertEqual(Frag().__int__(), 42)
|
|---|
| 718 | self.assertEqual(int(Frag()), 42)
|
|---|
| 719 |
|
|---|
| 720 | # MI mixing classic and new-style classes.
|
|---|
| 721 |
|
|---|
| 722 | class A:
|
|---|
| 723 | x = 1
|
|---|
| 724 |
|
|---|
| 725 | class B(A):
|
|---|
| 726 | pass
|
|---|
| 727 |
|
|---|
| 728 | class C(A):
|
|---|
| 729 | x = 2
|
|---|
| 730 |
|
|---|
| 731 | class D(B, C):
|
|---|
| 732 | pass
|
|---|
| 733 | self.assertEqual(D.x, 1)
|
|---|
| 734 |
|
|---|
| 735 | # Classic MRO is preserved for a classic base class.
|
|---|
| 736 | class E(D, object):
|
|---|
| 737 | pass
|
|---|
| 738 | self.assertEqual(E.__mro__, (E, D, B, A, C, object))
|
|---|
| 739 | self.assertEqual(E.x, 1)
|
|---|
| 740 |
|
|---|
| 741 | # But with a mix of classic bases, their MROs are combined using
|
|---|
| 742 | # new-style MRO.
|
|---|
| 743 | class F(B, C, object):
|
|---|
| 744 | pass
|
|---|
| 745 | self.assertEqual(F.__mro__, (F, B, C, A, object))
|
|---|
| 746 | self.assertEqual(F.x, 2)
|
|---|
| 747 |
|
|---|
| 748 | # Try something else.
|
|---|
| 749 | class C:
|
|---|
| 750 | def cmethod(self):
|
|---|
| 751 | return "C a"
|
|---|
| 752 | def all_method(self):
|
|---|
| 753 | return "C b"
|
|---|
| 754 |
|
|---|
| 755 | class M1(C, object):
|
|---|
| 756 | def m1method(self):
|
|---|
| 757 | return "M1 a"
|
|---|
| 758 | def all_method(self):
|
|---|
| 759 | return "M1 b"
|
|---|
| 760 |
|
|---|
| 761 | self.assertEqual(M1.__mro__, (M1, C, object))
|
|---|
| 762 | m = M1()
|
|---|
| 763 | self.assertEqual(m.cmethod(), "C a")
|
|---|
| 764 | self.assertEqual(m.m1method(), "M1 a")
|
|---|
| 765 | self.assertEqual(m.all_method(), "M1 b")
|
|---|
| 766 |
|
|---|
| 767 | class D(C):
|
|---|
| 768 | def dmethod(self):
|
|---|
| 769 | return "D a"
|
|---|
| 770 | def all_method(self):
|
|---|
| 771 | return "D b"
|
|---|
| 772 |
|
|---|
| 773 | class M2(D, object):
|
|---|
| 774 | def m2method(self):
|
|---|
| 775 | return "M2 a"
|
|---|
| 776 | def all_method(self):
|
|---|
| 777 | return "M2 b"
|
|---|
| 778 |
|
|---|
| 779 | self.assertEqual(M2.__mro__, (M2, D, C, object))
|
|---|
| 780 | m = M2()
|
|---|
| 781 | self.assertEqual(m.cmethod(), "C a")
|
|---|
| 782 | self.assertEqual(m.dmethod(), "D a")
|
|---|
| 783 | self.assertEqual(m.m2method(), "M2 a")
|
|---|
| 784 | self.assertEqual(m.all_method(), "M2 b")
|
|---|
| 785 |
|
|---|
| 786 | class M3(M1, M2, object):
|
|---|
| 787 | def m3method(self):
|
|---|
| 788 | return "M3 a"
|
|---|
| 789 | def all_method(self):
|
|---|
| 790 | return "M3 b"
|
|---|
| 791 | self.assertEqual(M3.__mro__, (M3, M1, M2, D, C, object))
|
|---|
| 792 | m = M3()
|
|---|
| 793 | self.assertEqual(m.cmethod(), "C a")
|
|---|
| 794 | self.assertEqual(m.dmethod(), "D a")
|
|---|
| 795 | self.assertEqual(m.m1method(), "M1 a")
|
|---|
| 796 | self.assertEqual(m.m2method(), "M2 a")
|
|---|
| 797 | self.assertEqual(m.m3method(), "M3 a")
|
|---|
| 798 | self.assertEqual(m.all_method(), "M3 b")
|
|---|
| 799 |
|
|---|
| 800 | class Classic:
|
|---|
| 801 | pass
|
|---|
| 802 | try:
|
|---|
| 803 | class New(Classic):
|
|---|
| 804 | __metaclass__ = type
|
|---|
| 805 | except TypeError:
|
|---|
| 806 | pass
|
|---|
| 807 | else:
|
|---|
| 808 | self.fail("new class with only classic bases - shouldn't be")
|
|---|
| 809 |
|
|---|
| 810 | def test_diamond_inheritence(self):
|
|---|
| 811 | # Testing multiple inheritance special cases...
|
|---|
| 812 | class A(object):
|
|---|
| 813 | def spam(self): return "A"
|
|---|
| 814 | self.assertEqual(A().spam(), "A")
|
|---|
| 815 | class B(A):
|
|---|
| 816 | def boo(self): return "B"
|
|---|
| 817 | def spam(self): return "B"
|
|---|
| 818 | self.assertEqual(B().spam(), "B")
|
|---|
| 819 | self.assertEqual(B().boo(), "B")
|
|---|
| 820 | class C(A):
|
|---|
| 821 | def boo(self): return "C"
|
|---|
| 822 | self.assertEqual(C().spam(), "A")
|
|---|
| 823 | self.assertEqual(C().boo(), "C")
|
|---|
| 824 | class D(B, C): pass
|
|---|
| 825 | self.assertEqual(D().spam(), "B")
|
|---|
| 826 | self.assertEqual(D().boo(), "B")
|
|---|
| 827 | self.assertEqual(D.__mro__, (D, B, C, A, object))
|
|---|
| 828 | class E(C, B): pass
|
|---|
| 829 | self.assertEqual(E().spam(), "B")
|
|---|
| 830 | self.assertEqual(E().boo(), "C")
|
|---|
| 831 | self.assertEqual(E.__mro__, (E, C, B, A, object))
|
|---|
| 832 | # MRO order disagreement
|
|---|
| 833 | try:
|
|---|
| 834 | class F(D, E): pass
|
|---|
| 835 | except TypeError:
|
|---|
| 836 | pass
|
|---|
| 837 | else:
|
|---|
| 838 | self.fail("expected MRO order disagreement (F)")
|
|---|
| 839 | try:
|
|---|
| 840 | class G(E, D): pass
|
|---|
| 841 | except TypeError:
|
|---|
| 842 | pass
|
|---|
| 843 | else:
|
|---|
| 844 | self.fail("expected MRO order disagreement (G)")
|
|---|
| 845 |
|
|---|
| 846 | # see thread python-dev/2002-October/029035.html
|
|---|
| 847 | def test_ex5_from_c3_switch(self):
|
|---|
| 848 | # Testing ex5 from C3 switch discussion...
|
|---|
| 849 | class A(object): pass
|
|---|
| 850 | class B(object): pass
|
|---|
| 851 | class C(object): pass
|
|---|
| 852 | class X(A): pass
|
|---|
| 853 | class Y(A): pass
|
|---|
| 854 | class Z(X,B,Y,C): pass
|
|---|
| 855 | self.assertEqual(Z.__mro__, (Z, X, B, Y, A, C, object))
|
|---|
| 856 |
|
|---|
| 857 | # see "A Monotonic Superclass Linearization for Dylan",
|
|---|
| 858 | # by Kim Barrett et al. (OOPSLA 1996)
|
|---|
| 859 | def test_monotonicity(self):
|
|---|
| 860 | # Testing MRO monotonicity...
|
|---|
| 861 | class Boat(object): pass
|
|---|
| 862 | class DayBoat(Boat): pass
|
|---|
| 863 | class WheelBoat(Boat): pass
|
|---|
| 864 | class EngineLess(DayBoat): pass
|
|---|
| 865 | class SmallMultihull(DayBoat): pass
|
|---|
| 866 | class PedalWheelBoat(EngineLess,WheelBoat): pass
|
|---|
| 867 | class SmallCatamaran(SmallMultihull): pass
|
|---|
| 868 | class Pedalo(PedalWheelBoat,SmallCatamaran): pass
|
|---|
| 869 |
|
|---|
| 870 | self.assertEqual(PedalWheelBoat.__mro__,
|
|---|
| 871 | (PedalWheelBoat, EngineLess, DayBoat, WheelBoat, Boat, object))
|
|---|
| 872 | self.assertEqual(SmallCatamaran.__mro__,
|
|---|
| 873 | (SmallCatamaran, SmallMultihull, DayBoat, Boat, object))
|
|---|
| 874 | self.assertEqual(Pedalo.__mro__,
|
|---|
| 875 | (Pedalo, PedalWheelBoat, EngineLess, SmallCatamaran,
|
|---|
| 876 | SmallMultihull, DayBoat, WheelBoat, Boat, object))
|
|---|
| 877 |
|
|---|
| 878 | # see "A Monotonic Superclass Linearization for Dylan",
|
|---|
| 879 | # by Kim Barrett et al. (OOPSLA 1996)
|
|---|
| 880 | def test_consistency_with_epg(self):
|
|---|
| 881 | # Testing consistency with EPG...
|
|---|
| 882 | class Pane(object): pass
|
|---|
| 883 | class ScrollingMixin(object): pass
|
|---|
| 884 | class EditingMixin(object): pass
|
|---|
| 885 | class ScrollablePane(Pane,ScrollingMixin): pass
|
|---|
| 886 | class EditablePane(Pane,EditingMixin): pass
|
|---|
| 887 | class EditableScrollablePane(ScrollablePane,EditablePane): pass
|
|---|
| 888 |
|
|---|
| 889 | self.assertEqual(EditableScrollablePane.__mro__,
|
|---|
| 890 | (EditableScrollablePane, ScrollablePane, EditablePane, Pane,
|
|---|
| 891 | ScrollingMixin, EditingMixin, object))
|
|---|
| 892 |
|
|---|
| 893 | def test_mro_disagreement(self):
|
|---|
| 894 | # Testing error messages for MRO disagreement...
|
|---|
| 895 | mro_err_msg = """Cannot create a consistent method resolution
|
|---|
| 896 | order (MRO) for bases """
|
|---|
| 897 |
|
|---|
| 898 | def raises(exc, expected, callable, *args):
|
|---|
| 899 | try:
|
|---|
| 900 | callable(*args)
|
|---|
| 901 | except exc, msg:
|
|---|
| 902 | # the exact msg is generally considered an impl detail
|
|---|
| 903 | if test_support.check_impl_detail():
|
|---|
| 904 | if not str(msg).startswith(expected):
|
|---|
| 905 | self.fail("Message %r, expected %r" %
|
|---|
| 906 | (str(msg), expected))
|
|---|
| 907 | else:
|
|---|
| 908 | self.fail("Expected %s" % exc)
|
|---|
| 909 |
|
|---|
| 910 | class A(object): pass
|
|---|
| 911 | class B(A): pass
|
|---|
| 912 | class C(object): pass
|
|---|
| 913 |
|
|---|
| 914 | # Test some very simple errors
|
|---|
| 915 | raises(TypeError, "duplicate base class A",
|
|---|
| 916 | type, "X", (A, A), {})
|
|---|
| 917 | raises(TypeError, mro_err_msg,
|
|---|
| 918 | type, "X", (A, B), {})
|
|---|
| 919 | raises(TypeError, mro_err_msg,
|
|---|
| 920 | type, "X", (A, C, B), {})
|
|---|
| 921 | # Test a slightly more complex error
|
|---|
| 922 | class GridLayout(object): pass
|
|---|
| 923 | class HorizontalGrid(GridLayout): pass
|
|---|
| 924 | class VerticalGrid(GridLayout): pass
|
|---|
| 925 | class HVGrid(HorizontalGrid, VerticalGrid): pass
|
|---|
| 926 | class VHGrid(VerticalGrid, HorizontalGrid): pass
|
|---|
| 927 | raises(TypeError, mro_err_msg,
|
|---|
| 928 | type, "ConfusedGrid", (HVGrid, VHGrid), {})
|
|---|
| 929 |
|
|---|
| 930 | def test_object_class(self):
|
|---|
| 931 | # Testing object class...
|
|---|
| 932 | a = object()
|
|---|
| 933 | self.assertEqual(a.__class__, object)
|
|---|
| 934 | self.assertEqual(type(a), object)
|
|---|
| 935 | b = object()
|
|---|
| 936 | self.assertNotEqual(a, b)
|
|---|
| 937 | self.assertFalse(hasattr(a, "foo"))
|
|---|
| 938 | try:
|
|---|
| 939 | a.foo = 12
|
|---|
| 940 | except (AttributeError, TypeError):
|
|---|
| 941 | pass
|
|---|
| 942 | else:
|
|---|
| 943 | self.fail("object() should not allow setting a foo attribute")
|
|---|
| 944 | self.assertFalse(hasattr(object(), "__dict__"))
|
|---|
| 945 |
|
|---|
| 946 | class Cdict(object):
|
|---|
| 947 | pass
|
|---|
| 948 | x = Cdict()
|
|---|
| 949 | self.assertEqual(x.__dict__, {})
|
|---|
| 950 | x.foo = 1
|
|---|
| 951 | self.assertEqual(x.foo, 1)
|
|---|
| 952 | self.assertEqual(x.__dict__, {'foo': 1})
|
|---|
| 953 |
|
|---|
| 954 | def test_slots(self):
|
|---|
| 955 | # Testing __slots__...
|
|---|
| 956 | class C0(object):
|
|---|
| 957 | __slots__ = []
|
|---|
| 958 | x = C0()
|
|---|
| 959 | self.assertFalse(hasattr(x, "__dict__"))
|
|---|
| 960 | self.assertFalse(hasattr(x, "foo"))
|
|---|
| 961 |
|
|---|
| 962 | class C1(object):
|
|---|
| 963 | __slots__ = ['a']
|
|---|
| 964 | x = C1()
|
|---|
| 965 | self.assertFalse(hasattr(x, "__dict__"))
|
|---|
| 966 | self.assertFalse(hasattr(x, "a"))
|
|---|
| 967 | x.a = 1
|
|---|
| 968 | self.assertEqual(x.a, 1)
|
|---|
| 969 | x.a = None
|
|---|
| 970 | self.assertEqual(x.a, None)
|
|---|
| 971 | del x.a
|
|---|
| 972 | self.assertFalse(hasattr(x, "a"))
|
|---|
| 973 |
|
|---|
| 974 | class C3(object):
|
|---|
| 975 | __slots__ = ['a', 'b', 'c']
|
|---|
| 976 | x = C3()
|
|---|
| 977 | self.assertFalse(hasattr(x, "__dict__"))
|
|---|
| 978 | self.assertFalse(hasattr(x, 'a'))
|
|---|
| 979 | self.assertFalse(hasattr(x, 'b'))
|
|---|
| 980 | self.assertFalse(hasattr(x, 'c'))
|
|---|
| 981 | x.a = 1
|
|---|
| 982 | x.b = 2
|
|---|
| 983 | x.c = 3
|
|---|
| 984 | self.assertEqual(x.a, 1)
|
|---|
| 985 | self.assertEqual(x.b, 2)
|
|---|
| 986 | self.assertEqual(x.c, 3)
|
|---|
| 987 |
|
|---|
| 988 | class C4(object):
|
|---|
| 989 | """Validate name mangling"""
|
|---|
| 990 | __slots__ = ['__a']
|
|---|
| 991 | def __init__(self, value):
|
|---|
| 992 | self.__a = value
|
|---|
| 993 | def get(self):
|
|---|
| 994 | return self.__a
|
|---|
| 995 | x = C4(5)
|
|---|
| 996 | self.assertFalse(hasattr(x, '__dict__'))
|
|---|
| 997 | self.assertFalse(hasattr(x, '__a'))
|
|---|
| 998 | self.assertEqual(x.get(), 5)
|
|---|
| 999 | try:
|
|---|
| 1000 | x.__a = 6
|
|---|
| 1001 | except AttributeError:
|
|---|
| 1002 | pass
|
|---|
| 1003 | else:
|
|---|
| 1004 | self.fail("Double underscored names not mangled")
|
|---|
| 1005 |
|
|---|
| 1006 | # Make sure slot names are proper identifiers
|
|---|
| 1007 | try:
|
|---|
| 1008 | class C(object):
|
|---|
| 1009 | __slots__ = [None]
|
|---|
| 1010 | except TypeError:
|
|---|
| 1011 | pass
|
|---|
| 1012 | else:
|
|---|
| 1013 | self.fail("[None] slots not caught")
|
|---|
| 1014 | try:
|
|---|
| 1015 | class C(object):
|
|---|
| 1016 | __slots__ = ["foo bar"]
|
|---|
| 1017 | except TypeError:
|
|---|
| 1018 | pass
|
|---|
| 1019 | else:
|
|---|
| 1020 | self.fail("['foo bar'] slots not caught")
|
|---|
| 1021 | try:
|
|---|
| 1022 | class C(object):
|
|---|
| 1023 | __slots__ = ["foo\0bar"]
|
|---|
| 1024 | except TypeError:
|
|---|
| 1025 | pass
|
|---|
| 1026 | else:
|
|---|
| 1027 | self.fail("['foo\\0bar'] slots not caught")
|
|---|
| 1028 | try:
|
|---|
| 1029 | class C(object):
|
|---|
| 1030 | __slots__ = ["1"]
|
|---|
| 1031 | except TypeError:
|
|---|
| 1032 | pass
|
|---|
| 1033 | else:
|
|---|
| 1034 | self.fail("['1'] slots not caught")
|
|---|
| 1035 | try:
|
|---|
| 1036 | class C(object):
|
|---|
| 1037 | __slots__ = [""]
|
|---|
| 1038 | except TypeError:
|
|---|
| 1039 | pass
|
|---|
| 1040 | else:
|
|---|
| 1041 | self.fail("[''] slots not caught")
|
|---|
| 1042 | class C(object):
|
|---|
| 1043 | __slots__ = ["a", "a_b", "_a", "A0123456789Z"]
|
|---|
| 1044 | # XXX(nnorwitz): was there supposed to be something tested
|
|---|
| 1045 | # from the class above?
|
|---|
| 1046 |
|
|---|
| 1047 | # Test a single string is not expanded as a sequence.
|
|---|
| 1048 | class C(object):
|
|---|
| 1049 | __slots__ = "abc"
|
|---|
| 1050 | c = C()
|
|---|
| 1051 | c.abc = 5
|
|---|
| 1052 | self.assertEqual(c.abc, 5)
|
|---|
| 1053 |
|
|---|
| 1054 | # Test unicode slot names
|
|---|
| 1055 | try:
|
|---|
| 1056 | unicode
|
|---|
| 1057 | except NameError:
|
|---|
| 1058 | pass
|
|---|
| 1059 | else:
|
|---|
| 1060 | # Test a single unicode string is not expanded as a sequence.
|
|---|
| 1061 | class C(object):
|
|---|
| 1062 | __slots__ = unicode("abc")
|
|---|
| 1063 | c = C()
|
|---|
| 1064 | c.abc = 5
|
|---|
| 1065 | self.assertEqual(c.abc, 5)
|
|---|
| 1066 |
|
|---|
| 1067 | # _unicode_to_string used to modify slots in certain circumstances
|
|---|
| 1068 | slots = (unicode("foo"), unicode("bar"))
|
|---|
| 1069 | class C(object):
|
|---|
| 1070 | __slots__ = slots
|
|---|
| 1071 | x = C()
|
|---|
| 1072 | x.foo = 5
|
|---|
| 1073 | self.assertEqual(x.foo, 5)
|
|---|
| 1074 | self.assertEqual(type(slots[0]), unicode)
|
|---|
| 1075 | # this used to leak references
|
|---|
| 1076 | try:
|
|---|
| 1077 | class C(object):
|
|---|
| 1078 | __slots__ = [unichr(128)]
|
|---|
| 1079 | except (TypeError, UnicodeEncodeError):
|
|---|
| 1080 | pass
|
|---|
| 1081 | else:
|
|---|
| 1082 | self.fail("[unichr(128)] slots not caught")
|
|---|
| 1083 |
|
|---|
| 1084 | # Test leaks
|
|---|
| 1085 | class Counted(object):
|
|---|
| 1086 | counter = 0 # counts the number of instances alive
|
|---|
| 1087 | def __init__(self):
|
|---|
| 1088 | Counted.counter += 1
|
|---|
| 1089 | def __del__(self):
|
|---|
| 1090 | Counted.counter -= 1
|
|---|
| 1091 | class C(object):
|
|---|
| 1092 | __slots__ = ['a', 'b', 'c']
|
|---|
| 1093 | x = C()
|
|---|
| 1094 | x.a = Counted()
|
|---|
| 1095 | x.b = Counted()
|
|---|
| 1096 | x.c = Counted()
|
|---|
| 1097 | self.assertEqual(Counted.counter, 3)
|
|---|
| 1098 | del x
|
|---|
| 1099 | test_support.gc_collect()
|
|---|
| 1100 | self.assertEqual(Counted.counter, 0)
|
|---|
| 1101 | class D(C):
|
|---|
| 1102 | pass
|
|---|
| 1103 | x = D()
|
|---|
| 1104 | x.a = Counted()
|
|---|
| 1105 | x.z = Counted()
|
|---|
| 1106 | self.assertEqual(Counted.counter, 2)
|
|---|
| 1107 | del x
|
|---|
| 1108 | test_support.gc_collect()
|
|---|
| 1109 | self.assertEqual(Counted.counter, 0)
|
|---|
| 1110 | class E(D):
|
|---|
| 1111 | __slots__ = ['e']
|
|---|
| 1112 | x = E()
|
|---|
| 1113 | x.a = Counted()
|
|---|
| 1114 | x.z = Counted()
|
|---|
| 1115 | x.e = Counted()
|
|---|
| 1116 | self.assertEqual(Counted.counter, 3)
|
|---|
| 1117 | del x
|
|---|
| 1118 | test_support.gc_collect()
|
|---|
| 1119 | self.assertEqual(Counted.counter, 0)
|
|---|
| 1120 |
|
|---|
| 1121 | # Test cyclical leaks [SF bug 519621]
|
|---|
| 1122 | class F(object):
|
|---|
| 1123 | __slots__ = ['a', 'b']
|
|---|
| 1124 | s = F()
|
|---|
| 1125 | s.a = [Counted(), s]
|
|---|
| 1126 | self.assertEqual(Counted.counter, 1)
|
|---|
| 1127 | s = None
|
|---|
| 1128 | test_support.gc_collect()
|
|---|
| 1129 | self.assertEqual(Counted.counter, 0)
|
|---|
| 1130 |
|
|---|
| 1131 | # Test lookup leaks [SF bug 572567]
|
|---|
| 1132 | if hasattr(gc, 'get_objects'):
|
|---|
| 1133 | class G(object):
|
|---|
| 1134 | def __cmp__(self, other):
|
|---|
| 1135 | return 0
|
|---|
| 1136 | __hash__ = None # Silence Py3k warning
|
|---|
| 1137 | g = G()
|
|---|
| 1138 | orig_objects = len(gc.get_objects())
|
|---|
| 1139 | for i in xrange(10):
|
|---|
| 1140 | g==g
|
|---|
| 1141 | new_objects = len(gc.get_objects())
|
|---|
| 1142 | self.assertEqual(orig_objects, new_objects)
|
|---|
| 1143 |
|
|---|
| 1144 | class H(object):
|
|---|
| 1145 | __slots__ = ['a', 'b']
|
|---|
| 1146 | def __init__(self):
|
|---|
| 1147 | self.a = 1
|
|---|
| 1148 | self.b = 2
|
|---|
| 1149 | def __del__(self_):
|
|---|
| 1150 | self.assertEqual(self_.a, 1)
|
|---|
| 1151 | self.assertEqual(self_.b, 2)
|
|---|
| 1152 | with test_support.captured_output('stderr') as s:
|
|---|
| 1153 | h = H()
|
|---|
| 1154 | del h
|
|---|
| 1155 | self.assertEqual(s.getvalue(), '')
|
|---|
| 1156 |
|
|---|
| 1157 | class X(object):
|
|---|
| 1158 | __slots__ = "a"
|
|---|
| 1159 | with self.assertRaises(AttributeError):
|
|---|
| 1160 | del X().a
|
|---|
| 1161 |
|
|---|
| 1162 | def test_slots_special(self):
|
|---|
| 1163 | # Testing __dict__ and __weakref__ in __slots__...
|
|---|
| 1164 | class D(object):
|
|---|
| 1165 | __slots__ = ["__dict__"]
|
|---|
| 1166 | a = D()
|
|---|
| 1167 | self.assertTrue(hasattr(a, "__dict__"))
|
|---|
| 1168 | self.assertFalse(hasattr(a, "__weakref__"))
|
|---|
| 1169 | a.foo = 42
|
|---|
| 1170 | self.assertEqual(a.__dict__, {"foo": 42})
|
|---|
| 1171 |
|
|---|
| 1172 | class W(object):
|
|---|
| 1173 | __slots__ = ["__weakref__"]
|
|---|
| 1174 | a = W()
|
|---|
| 1175 | self.assertTrue(hasattr(a, "__weakref__"))
|
|---|
| 1176 | self.assertFalse(hasattr(a, "__dict__"))
|
|---|
| 1177 | try:
|
|---|
| 1178 | a.foo = 42
|
|---|
| 1179 | except AttributeError:
|
|---|
| 1180 | pass
|
|---|
| 1181 | else:
|
|---|
| 1182 | self.fail("shouldn't be allowed to set a.foo")
|
|---|
| 1183 |
|
|---|
| 1184 | class C1(W, D):
|
|---|
| 1185 | __slots__ = []
|
|---|
| 1186 | a = C1()
|
|---|
| 1187 | self.assertTrue(hasattr(a, "__dict__"))
|
|---|
| 1188 | self.assertTrue(hasattr(a, "__weakref__"))
|
|---|
| 1189 | a.foo = 42
|
|---|
| 1190 | self.assertEqual(a.__dict__, {"foo": 42})
|
|---|
| 1191 |
|
|---|
| 1192 | class C2(D, W):
|
|---|
| 1193 | __slots__ = []
|
|---|
| 1194 | a = C2()
|
|---|
| 1195 | self.assertTrue(hasattr(a, "__dict__"))
|
|---|
| 1196 | self.assertTrue(hasattr(a, "__weakref__"))
|
|---|
| 1197 | a.foo = 42
|
|---|
| 1198 | self.assertEqual(a.__dict__, {"foo": 42})
|
|---|
| 1199 |
|
|---|
| 1200 | def test_slots_descriptor(self):
|
|---|
| 1201 | # Issue2115: slot descriptors did not correctly check
|
|---|
| 1202 | # the type of the given object
|
|---|
| 1203 | import abc
|
|---|
| 1204 | class MyABC:
|
|---|
| 1205 | __metaclass__ = abc.ABCMeta
|
|---|
| 1206 | __slots__ = "a"
|
|---|
| 1207 |
|
|---|
| 1208 | class Unrelated(object):
|
|---|
| 1209 | pass
|
|---|
| 1210 | MyABC.register(Unrelated)
|
|---|
| 1211 |
|
|---|
| 1212 | u = Unrelated()
|
|---|
| 1213 | self.assertIsInstance(u, MyABC)
|
|---|
| 1214 |
|
|---|
| 1215 | # This used to crash
|
|---|
| 1216 | self.assertRaises(TypeError, MyABC.a.__set__, u, 3)
|
|---|
| 1217 |
|
|---|
| 1218 | def test_metaclass_cmp(self):
|
|---|
| 1219 | # See bug 7491.
|
|---|
| 1220 | class M(type):
|
|---|
| 1221 | def __cmp__(self, other):
|
|---|
| 1222 | return -1
|
|---|
| 1223 | class X(object):
|
|---|
| 1224 | __metaclass__ = M
|
|---|
| 1225 | self.assertTrue(X < M)
|
|---|
| 1226 |
|
|---|
| 1227 | def test_dynamics(self):
|
|---|
| 1228 | # Testing class attribute propagation...
|
|---|
| 1229 | class D(object):
|
|---|
| 1230 | pass
|
|---|
| 1231 | class E(D):
|
|---|
| 1232 | pass
|
|---|
| 1233 | class F(D):
|
|---|
| 1234 | pass
|
|---|
| 1235 | D.foo = 1
|
|---|
| 1236 | self.assertEqual(D.foo, 1)
|
|---|
| 1237 | # Test that dynamic attributes are inherited
|
|---|
| 1238 | self.assertEqual(E.foo, 1)
|
|---|
| 1239 | self.assertEqual(F.foo, 1)
|
|---|
| 1240 | # Test dynamic instances
|
|---|
| 1241 | class C(object):
|
|---|
| 1242 | pass
|
|---|
| 1243 | a = C()
|
|---|
| 1244 | self.assertFalse(hasattr(a, "foobar"))
|
|---|
| 1245 | C.foobar = 2
|
|---|
| 1246 | self.assertEqual(a.foobar, 2)
|
|---|
| 1247 | C.method = lambda self: 42
|
|---|
| 1248 | self.assertEqual(a.method(), 42)
|
|---|
| 1249 | C.__repr__ = lambda self: "C()"
|
|---|
| 1250 | self.assertEqual(repr(a), "C()")
|
|---|
| 1251 | C.__int__ = lambda self: 100
|
|---|
| 1252 | self.assertEqual(int(a), 100)
|
|---|
| 1253 | self.assertEqual(a.foobar, 2)
|
|---|
| 1254 | self.assertFalse(hasattr(a, "spam"))
|
|---|
| 1255 | def mygetattr(self, name):
|
|---|
| 1256 | if name == "spam":
|
|---|
| 1257 | return "spam"
|
|---|
| 1258 | raise AttributeError
|
|---|
| 1259 | C.__getattr__ = mygetattr
|
|---|
| 1260 | self.assertEqual(a.spam, "spam")
|
|---|
| 1261 | a.new = 12
|
|---|
| 1262 | self.assertEqual(a.new, 12)
|
|---|
| 1263 | def mysetattr(self, name, value):
|
|---|
| 1264 | if name == "spam":
|
|---|
| 1265 | raise AttributeError
|
|---|
| 1266 | return object.__setattr__(self, name, value)
|
|---|
| 1267 | C.__setattr__ = mysetattr
|
|---|
| 1268 | try:
|
|---|
| 1269 | a.spam = "not spam"
|
|---|
| 1270 | except AttributeError:
|
|---|
| 1271 | pass
|
|---|
| 1272 | else:
|
|---|
| 1273 | self.fail("expected AttributeError")
|
|---|
| 1274 | self.assertEqual(a.spam, "spam")
|
|---|
| 1275 | class D(C):
|
|---|
| 1276 | pass
|
|---|
| 1277 | d = D()
|
|---|
| 1278 | d.foo = 1
|
|---|
| 1279 | self.assertEqual(d.foo, 1)
|
|---|
| 1280 |
|
|---|
| 1281 | # Test handling of int*seq and seq*int
|
|---|
| 1282 | class I(int):
|
|---|
| 1283 | pass
|
|---|
| 1284 | self.assertEqual("a"*I(2), "aa")
|
|---|
| 1285 | self.assertEqual(I(2)*"a", "aa")
|
|---|
| 1286 | self.assertEqual(2*I(3), 6)
|
|---|
| 1287 | self.assertEqual(I(3)*2, 6)
|
|---|
| 1288 | self.assertEqual(I(3)*I(2), 6)
|
|---|
| 1289 |
|
|---|
| 1290 | # Test handling of long*seq and seq*long
|
|---|
| 1291 | class L(long):
|
|---|
| 1292 | pass
|
|---|
| 1293 | self.assertEqual("a"*L(2L), "aa")
|
|---|
| 1294 | self.assertEqual(L(2L)*"a", "aa")
|
|---|
| 1295 | self.assertEqual(2*L(3), 6)
|
|---|
| 1296 | self.assertEqual(L(3)*2, 6)
|
|---|
| 1297 | self.assertEqual(L(3)*L(2), 6)
|
|---|
| 1298 |
|
|---|
| 1299 | # Test comparison of classes with dynamic metaclasses
|
|---|
| 1300 | class dynamicmetaclass(type):
|
|---|
| 1301 | pass
|
|---|
| 1302 | class someclass:
|
|---|
| 1303 | __metaclass__ = dynamicmetaclass
|
|---|
| 1304 | self.assertNotEqual(someclass, object)
|
|---|
| 1305 |
|
|---|
| 1306 | def test_errors(self):
|
|---|
| 1307 | # Testing errors...
|
|---|
| 1308 | try:
|
|---|
| 1309 | class C(list, dict):
|
|---|
| 1310 | pass
|
|---|
| 1311 | except TypeError:
|
|---|
| 1312 | pass
|
|---|
| 1313 | else:
|
|---|
| 1314 | self.fail("inheritance from both list and dict should be illegal")
|
|---|
| 1315 |
|
|---|
| 1316 | try:
|
|---|
| 1317 | class C(object, None):
|
|---|
| 1318 | pass
|
|---|
| 1319 | except TypeError:
|
|---|
| 1320 | pass
|
|---|
| 1321 | else:
|
|---|
| 1322 | self.fail("inheritance from non-type should be illegal")
|
|---|
| 1323 | class Classic:
|
|---|
| 1324 | pass
|
|---|
| 1325 |
|
|---|
| 1326 | try:
|
|---|
| 1327 | class C(type(len)):
|
|---|
| 1328 | pass
|
|---|
| 1329 | except TypeError:
|
|---|
| 1330 | pass
|
|---|
| 1331 | else:
|
|---|
| 1332 | self.fail("inheritance from CFunction should be illegal")
|
|---|
| 1333 |
|
|---|
| 1334 | try:
|
|---|
| 1335 | class C(object):
|
|---|
| 1336 | __slots__ = 1
|
|---|
| 1337 | except TypeError:
|
|---|
| 1338 | pass
|
|---|
| 1339 | else:
|
|---|
| 1340 | self.fail("__slots__ = 1 should be illegal")
|
|---|
| 1341 |
|
|---|
| 1342 | try:
|
|---|
| 1343 | class C(object):
|
|---|
| 1344 | __slots__ = [1]
|
|---|
| 1345 | except TypeError:
|
|---|
| 1346 | pass
|
|---|
| 1347 | else:
|
|---|
| 1348 | self.fail("__slots__ = [1] should be illegal")
|
|---|
| 1349 |
|
|---|
| 1350 | class M1(type):
|
|---|
| 1351 | pass
|
|---|
| 1352 | class M2(type):
|
|---|
| 1353 | pass
|
|---|
| 1354 | class A1(object):
|
|---|
| 1355 | __metaclass__ = M1
|
|---|
| 1356 | class A2(object):
|
|---|
| 1357 | __metaclass__ = M2
|
|---|
| 1358 | try:
|
|---|
| 1359 | class B(A1, A2):
|
|---|
| 1360 | pass
|
|---|
| 1361 | except TypeError:
|
|---|
| 1362 | pass
|
|---|
| 1363 | else:
|
|---|
| 1364 | self.fail("finding the most derived metaclass should have failed")
|
|---|
| 1365 |
|
|---|
| 1366 | def test_classmethods(self):
|
|---|
| 1367 | # Testing class methods...
|
|---|
| 1368 | class C(object):
|
|---|
| 1369 | def foo(*a): return a
|
|---|
| 1370 | goo = classmethod(foo)
|
|---|
| 1371 | c = C()
|
|---|
| 1372 | self.assertEqual(C.goo(1), (C, 1))
|
|---|
| 1373 | self.assertEqual(c.goo(1), (C, 1))
|
|---|
| 1374 | self.assertEqual(c.foo(1), (c, 1))
|
|---|
| 1375 | class D(C):
|
|---|
| 1376 | pass
|
|---|
| 1377 | d = D()
|
|---|
| 1378 | self.assertEqual(D.goo(1), (D, 1))
|
|---|
| 1379 | self.assertEqual(d.goo(1), (D, 1))
|
|---|
| 1380 | self.assertEqual(d.foo(1), (d, 1))
|
|---|
| 1381 | self.assertEqual(D.foo(d, 1), (d, 1))
|
|---|
| 1382 | # Test for a specific crash (SF bug 528132)
|
|---|
| 1383 | def f(cls, arg): return (cls, arg)
|
|---|
| 1384 | ff = classmethod(f)
|
|---|
| 1385 | self.assertEqual(ff.__get__(0, int)(42), (int, 42))
|
|---|
| 1386 | self.assertEqual(ff.__get__(0)(42), (int, 42))
|
|---|
| 1387 |
|
|---|
| 1388 | # Test super() with classmethods (SF bug 535444)
|
|---|
| 1389 | self.assertEqual(C.goo.im_self, C)
|
|---|
| 1390 | self.assertEqual(D.goo.im_self, D)
|
|---|
| 1391 | self.assertEqual(super(D,D).goo.im_self, D)
|
|---|
| 1392 | self.assertEqual(super(D,d).goo.im_self, D)
|
|---|
| 1393 | self.assertEqual(super(D,D).goo(), (D,))
|
|---|
| 1394 | self.assertEqual(super(D,d).goo(), (D,))
|
|---|
| 1395 |
|
|---|
| 1396 | # Verify that a non-callable will raise
|
|---|
| 1397 | meth = classmethod(1).__get__(1)
|
|---|
| 1398 | self.assertRaises(TypeError, meth)
|
|---|
| 1399 |
|
|---|
| 1400 | # Verify that classmethod() doesn't allow keyword args
|
|---|
| 1401 | try:
|
|---|
| 1402 | classmethod(f, kw=1)
|
|---|
| 1403 | except TypeError:
|
|---|
| 1404 | pass
|
|---|
| 1405 | else:
|
|---|
| 1406 | self.fail("classmethod shouldn't accept keyword args")
|
|---|
| 1407 |
|
|---|
| 1408 | @test_support.impl_detail("the module 'xxsubtype' is internal")
|
|---|
| 1409 | def test_classmethods_in_c(self):
|
|---|
| 1410 | # Testing C-based class methods...
|
|---|
| 1411 | import xxsubtype as spam
|
|---|
| 1412 | a = (1, 2, 3)
|
|---|
| 1413 | d = {'abc': 123}
|
|---|
| 1414 | x, a1, d1 = spam.spamlist.classmeth(*a, **d)
|
|---|
| 1415 | self.assertEqual(x, spam.spamlist)
|
|---|
| 1416 | self.assertEqual(a, a1)
|
|---|
| 1417 | self.assertEqual(d, d1)
|
|---|
| 1418 | x, a1, d1 = spam.spamlist().classmeth(*a, **d)
|
|---|
| 1419 | self.assertEqual(x, spam.spamlist)
|
|---|
| 1420 | self.assertEqual(a, a1)
|
|---|
| 1421 | self.assertEqual(d, d1)
|
|---|
| 1422 | spam_cm = spam.spamlist.__dict__['classmeth']
|
|---|
| 1423 | x2, a2, d2 = spam_cm(spam.spamlist, *a, **d)
|
|---|
| 1424 | self.assertEqual(x2, spam.spamlist)
|
|---|
| 1425 | self.assertEqual(a2, a1)
|
|---|
| 1426 | self.assertEqual(d2, d1)
|
|---|
| 1427 | class SubSpam(spam.spamlist): pass
|
|---|
| 1428 | x2, a2, d2 = spam_cm(SubSpam, *a, **d)
|
|---|
| 1429 | self.assertEqual(x2, SubSpam)
|
|---|
| 1430 | self.assertEqual(a2, a1)
|
|---|
| 1431 | self.assertEqual(d2, d1)
|
|---|
| 1432 | with self.assertRaises(TypeError):
|
|---|
| 1433 | spam_cm()
|
|---|
| 1434 | with self.assertRaises(TypeError):
|
|---|
| 1435 | spam_cm(spam.spamlist())
|
|---|
| 1436 | with self.assertRaises(TypeError):
|
|---|
| 1437 | spam_cm(list)
|
|---|
| 1438 |
|
|---|
| 1439 | def test_staticmethods(self):
|
|---|
| 1440 | # Testing static methods...
|
|---|
| 1441 | class C(object):
|
|---|
| 1442 | def foo(*a): return a
|
|---|
| 1443 | goo = staticmethod(foo)
|
|---|
| 1444 | c = C()
|
|---|
| 1445 | self.assertEqual(C.goo(1), (1,))
|
|---|
| 1446 | self.assertEqual(c.goo(1), (1,))
|
|---|
| 1447 | self.assertEqual(c.foo(1), (c, 1,))
|
|---|
| 1448 | class D(C):
|
|---|
| 1449 | pass
|
|---|
| 1450 | d = D()
|
|---|
| 1451 | self.assertEqual(D.goo(1), (1,))
|
|---|
| 1452 | self.assertEqual(d.goo(1), (1,))
|
|---|
| 1453 | self.assertEqual(d.foo(1), (d, 1))
|
|---|
| 1454 | self.assertEqual(D.foo(d, 1), (d, 1))
|
|---|
| 1455 |
|
|---|
| 1456 | @test_support.impl_detail("the module 'xxsubtype' is internal")
|
|---|
| 1457 | def test_staticmethods_in_c(self):
|
|---|
| 1458 | # Testing C-based static methods...
|
|---|
| 1459 | import xxsubtype as spam
|
|---|
| 1460 | a = (1, 2, 3)
|
|---|
| 1461 | d = {"abc": 123}
|
|---|
| 1462 | x, a1, d1 = spam.spamlist.staticmeth(*a, **d)
|
|---|
| 1463 | self.assertEqual(x, None)
|
|---|
| 1464 | self.assertEqual(a, a1)
|
|---|
| 1465 | self.assertEqual(d, d1)
|
|---|
| 1466 | x, a1, d2 = spam.spamlist().staticmeth(*a, **d)
|
|---|
| 1467 | self.assertEqual(x, None)
|
|---|
| 1468 | self.assertEqual(a, a1)
|
|---|
| 1469 | self.assertEqual(d, d1)
|
|---|
| 1470 |
|
|---|
| 1471 | def test_classic(self):
|
|---|
| 1472 | # Testing classic classes...
|
|---|
| 1473 | class C:
|
|---|
| 1474 | def foo(*a): return a
|
|---|
| 1475 | goo = classmethod(foo)
|
|---|
| 1476 | c = C()
|
|---|
| 1477 | self.assertEqual(C.goo(1), (C, 1))
|
|---|
| 1478 | self.assertEqual(c.goo(1), (C, 1))
|
|---|
| 1479 | self.assertEqual(c.foo(1), (c, 1))
|
|---|
| 1480 | class D(C):
|
|---|
| 1481 | pass
|
|---|
| 1482 | d = D()
|
|---|
| 1483 | self.assertEqual(D.goo(1), (D, 1))
|
|---|
| 1484 | self.assertEqual(d.goo(1), (D, 1))
|
|---|
| 1485 | self.assertEqual(d.foo(1), (d, 1))
|
|---|
| 1486 | self.assertEqual(D.foo(d, 1), (d, 1))
|
|---|
| 1487 | class E: # *not* subclassing from C
|
|---|
| 1488 | foo = C.foo
|
|---|
| 1489 | self.assertEqual(E().foo, C.foo) # i.e., unbound
|
|---|
| 1490 | self.assertTrue(repr(C.foo.__get__(C())).startswith("<bound method "))
|
|---|
| 1491 |
|
|---|
| 1492 | def test_compattr(self):
|
|---|
| 1493 | # Testing computed attributes...
|
|---|
| 1494 | class C(object):
|
|---|
| 1495 | class computed_attribute(object):
|
|---|
| 1496 | def __init__(self, get, set=None, delete=None):
|
|---|
| 1497 | self.__get = get
|
|---|
| 1498 | self.__set = set
|
|---|
| 1499 | self.__delete = delete
|
|---|
| 1500 | def __get__(self, obj, type=None):
|
|---|
| 1501 | return self.__get(obj)
|
|---|
| 1502 | def __set__(self, obj, value):
|
|---|
| 1503 | return self.__set(obj, value)
|
|---|
| 1504 | def __delete__(self, obj):
|
|---|
| 1505 | return self.__delete(obj)
|
|---|
| 1506 | def __init__(self):
|
|---|
| 1507 | self.__x = 0
|
|---|
| 1508 | def __get_x(self):
|
|---|
| 1509 | x = self.__x
|
|---|
| 1510 | self.__x = x+1
|
|---|
| 1511 | return x
|
|---|
| 1512 | def __set_x(self, x):
|
|---|
| 1513 | self.__x = x
|
|---|
| 1514 | def __delete_x(self):
|
|---|
| 1515 | del self.__x
|
|---|
| 1516 | x = computed_attribute(__get_x, __set_x, __delete_x)
|
|---|
| 1517 | a = C()
|
|---|
| 1518 | self.assertEqual(a.x, 0)
|
|---|
| 1519 | self.assertEqual(a.x, 1)
|
|---|
| 1520 | a.x = 10
|
|---|
| 1521 | self.assertEqual(a.x, 10)
|
|---|
| 1522 | self.assertEqual(a.x, 11)
|
|---|
| 1523 | del a.x
|
|---|
| 1524 | self.assertEqual(hasattr(a, 'x'), 0)
|
|---|
| 1525 |
|
|---|
| 1526 | def test_newslots(self):
|
|---|
| 1527 | # Testing __new__ slot override...
|
|---|
| 1528 | class C(list):
|
|---|
| 1529 | def __new__(cls):
|
|---|
| 1530 | self = list.__new__(cls)
|
|---|
| 1531 | self.foo = 1
|
|---|
| 1532 | return self
|
|---|
| 1533 | def __init__(self):
|
|---|
| 1534 | self.foo = self.foo + 2
|
|---|
| 1535 | a = C()
|
|---|
| 1536 | self.assertEqual(a.foo, 3)
|
|---|
| 1537 | self.assertEqual(a.__class__, C)
|
|---|
| 1538 | class D(C):
|
|---|
| 1539 | pass
|
|---|
| 1540 | b = D()
|
|---|
| 1541 | self.assertEqual(b.foo, 3)
|
|---|
| 1542 | self.assertEqual(b.__class__, D)
|
|---|
| 1543 |
|
|---|
| 1544 | def test_altmro(self):
|
|---|
| 1545 | # Testing mro() and overriding it...
|
|---|
| 1546 | class A(object):
|
|---|
| 1547 | def f(self): return "A"
|
|---|
| 1548 | class B(A):
|
|---|
| 1549 | pass
|
|---|
| 1550 | class C(A):
|
|---|
| 1551 | def f(self): return "C"
|
|---|
| 1552 | class D(B, C):
|
|---|
| 1553 | pass
|
|---|
| 1554 | self.assertEqual(D.mro(), [D, B, C, A, object])
|
|---|
| 1555 | self.assertEqual(D.__mro__, (D, B, C, A, object))
|
|---|
| 1556 | self.assertEqual(D().f(), "C")
|
|---|
| 1557 |
|
|---|
| 1558 | class PerverseMetaType(type):
|
|---|
| 1559 | def mro(cls):
|
|---|
| 1560 | L = type.mro(cls)
|
|---|
| 1561 | L.reverse()
|
|---|
| 1562 | return L
|
|---|
| 1563 | class X(D,B,C,A):
|
|---|
| 1564 | __metaclass__ = PerverseMetaType
|
|---|
| 1565 | self.assertEqual(X.__mro__, (object, A, C, B, D, X))
|
|---|
| 1566 | self.assertEqual(X().f(), "A")
|
|---|
| 1567 |
|
|---|
| 1568 | try:
|
|---|
| 1569 | class X(object):
|
|---|
| 1570 | class __metaclass__(type):
|
|---|
| 1571 | def mro(self):
|
|---|
| 1572 | return [self, dict, object]
|
|---|
| 1573 | # In CPython, the class creation above already raises
|
|---|
| 1574 | # TypeError, as a protection against the fact that
|
|---|
| 1575 | # instances of X would segfault it. In other Python
|
|---|
| 1576 | # implementations it would be ok to let the class X
|
|---|
| 1577 | # be created, but instead get a clean TypeError on the
|
|---|
| 1578 | # __setitem__ below.
|
|---|
| 1579 | x = object.__new__(X)
|
|---|
| 1580 | x[5] = 6
|
|---|
| 1581 | except TypeError:
|
|---|
| 1582 | pass
|
|---|
| 1583 | else:
|
|---|
| 1584 | self.fail("devious mro() return not caught")
|
|---|
| 1585 |
|
|---|
| 1586 | try:
|
|---|
| 1587 | class X(object):
|
|---|
| 1588 | class __metaclass__(type):
|
|---|
| 1589 | def mro(self):
|
|---|
| 1590 | return [1]
|
|---|
| 1591 | except TypeError:
|
|---|
| 1592 | pass
|
|---|
| 1593 | else:
|
|---|
| 1594 | self.fail("non-class mro() return not caught")
|
|---|
| 1595 |
|
|---|
| 1596 | try:
|
|---|
| 1597 | class X(object):
|
|---|
| 1598 | class __metaclass__(type):
|
|---|
| 1599 | def mro(self):
|
|---|
| 1600 | return 1
|
|---|
| 1601 | except TypeError:
|
|---|
| 1602 | pass
|
|---|
| 1603 | else:
|
|---|
| 1604 | self.fail("non-sequence mro() return not caught")
|
|---|
| 1605 |
|
|---|
| 1606 | def test_overloading(self):
|
|---|
| 1607 | # Testing operator overloading...
|
|---|
| 1608 |
|
|---|
| 1609 | class B(object):
|
|---|
| 1610 | "Intermediate class because object doesn't have a __setattr__"
|
|---|
| 1611 |
|
|---|
| 1612 | class C(B):
|
|---|
| 1613 | def __getattr__(self, name):
|
|---|
| 1614 | if name == "foo":
|
|---|
| 1615 | return ("getattr", name)
|
|---|
| 1616 | else:
|
|---|
| 1617 | raise AttributeError
|
|---|
| 1618 | def __setattr__(self, name, value):
|
|---|
| 1619 | if name == "foo":
|
|---|
| 1620 | self.setattr = (name, value)
|
|---|
| 1621 | else:
|
|---|
| 1622 | return B.__setattr__(self, name, value)
|
|---|
| 1623 | def __delattr__(self, name):
|
|---|
| 1624 | if name == "foo":
|
|---|
| 1625 | self.delattr = name
|
|---|
| 1626 | else:
|
|---|
| 1627 | return B.__delattr__(self, name)
|
|---|
| 1628 |
|
|---|
| 1629 | def __getitem__(self, key):
|
|---|
| 1630 | return ("getitem", key)
|
|---|
| 1631 | def __setitem__(self, key, value):
|
|---|
| 1632 | self.setitem = (key, value)
|
|---|
| 1633 | def __delitem__(self, key):
|
|---|
| 1634 | self.delitem = key
|
|---|
| 1635 |
|
|---|
| 1636 | def __getslice__(self, i, j):
|
|---|
| 1637 | return ("getslice", i, j)
|
|---|
| 1638 | def __setslice__(self, i, j, value):
|
|---|
| 1639 | self.setslice = (i, j, value)
|
|---|
| 1640 | def __delslice__(self, i, j):
|
|---|
| 1641 | self.delslice = (i, j)
|
|---|
| 1642 |
|
|---|
| 1643 | a = C()
|
|---|
| 1644 | self.assertEqual(a.foo, ("getattr", "foo"))
|
|---|
| 1645 | a.foo = 12
|
|---|
| 1646 | self.assertEqual(a.setattr, ("foo", 12))
|
|---|
| 1647 | del a.foo
|
|---|
| 1648 | self.assertEqual(a.delattr, "foo")
|
|---|
| 1649 |
|
|---|
| 1650 | self.assertEqual(a[12], ("getitem", 12))
|
|---|
| 1651 | a[12] = 21
|
|---|
| 1652 | self.assertEqual(a.setitem, (12, 21))
|
|---|
| 1653 | del a[12]
|
|---|
| 1654 | self.assertEqual(a.delitem, 12)
|
|---|
| 1655 |
|
|---|
| 1656 | self.assertEqual(a[0:10], ("getslice", 0, 10))
|
|---|
| 1657 | a[0:10] = "foo"
|
|---|
| 1658 | self.assertEqual(a.setslice, (0, 10, "foo"))
|
|---|
| 1659 | del a[0:10]
|
|---|
| 1660 | self.assertEqual(a.delslice, (0, 10))
|
|---|
| 1661 |
|
|---|
| 1662 | def test_methods(self):
|
|---|
| 1663 | # Testing methods...
|
|---|
| 1664 | class C(object):
|
|---|
| 1665 | def __init__(self, x):
|
|---|
| 1666 | self.x = x
|
|---|
| 1667 | def foo(self):
|
|---|
| 1668 | return self.x
|
|---|
| 1669 | c1 = C(1)
|
|---|
| 1670 | self.assertEqual(c1.foo(), 1)
|
|---|
| 1671 | class D(C):
|
|---|
| 1672 | boo = C.foo
|
|---|
| 1673 | goo = c1.foo
|
|---|
| 1674 | d2 = D(2)
|
|---|
| 1675 | self.assertEqual(d2.foo(), 2)
|
|---|
| 1676 | self.assertEqual(d2.boo(), 2)
|
|---|
| 1677 | self.assertEqual(d2.goo(), 1)
|
|---|
| 1678 | class E(object):
|
|---|
| 1679 | foo = C.foo
|
|---|
| 1680 | self.assertEqual(E().foo, C.foo) # i.e., unbound
|
|---|
| 1681 | self.assertTrue(repr(C.foo.__get__(C(1))).startswith("<bound method "))
|
|---|
| 1682 |
|
|---|
| 1683 | def test_special_method_lookup(self):
|
|---|
| 1684 | # The lookup of special methods bypasses __getattr__ and
|
|---|
| 1685 | # __getattribute__, but they still can be descriptors.
|
|---|
| 1686 |
|
|---|
| 1687 | def run_context(manager):
|
|---|
| 1688 | with manager:
|
|---|
| 1689 | pass
|
|---|
| 1690 | def iden(self):
|
|---|
| 1691 | return self
|
|---|
| 1692 | def hello(self):
|
|---|
| 1693 | return "hello"
|
|---|
| 1694 | def empty_seq(self):
|
|---|
| 1695 | return []
|
|---|
| 1696 | def zero(self):
|
|---|
| 1697 | return 0
|
|---|
| 1698 | def complex_num(self):
|
|---|
| 1699 | return 1j
|
|---|
| 1700 | def stop(self):
|
|---|
| 1701 | raise StopIteration
|
|---|
| 1702 | def return_true(self, thing=None):
|
|---|
| 1703 | return True
|
|---|
| 1704 | def do_isinstance(obj):
|
|---|
| 1705 | return isinstance(int, obj)
|
|---|
| 1706 | def do_issubclass(obj):
|
|---|
| 1707 | return issubclass(int, obj)
|
|---|
| 1708 | def swallow(*args):
|
|---|
| 1709 | pass
|
|---|
| 1710 | def do_dict_missing(checker):
|
|---|
| 1711 | class DictSub(checker.__class__, dict):
|
|---|
| 1712 | pass
|
|---|
| 1713 | self.assertEqual(DictSub()["hi"], 4)
|
|---|
| 1714 | def some_number(self_, key):
|
|---|
| 1715 | self.assertEqual(key, "hi")
|
|---|
| 1716 | return 4
|
|---|
| 1717 | def format_impl(self, spec):
|
|---|
| 1718 | return "hello"
|
|---|
| 1719 |
|
|---|
| 1720 | # It would be nice to have every special method tested here, but I'm
|
|---|
| 1721 | # only listing the ones I can remember outside of typeobject.c, since it
|
|---|
| 1722 | # does it right.
|
|---|
| 1723 | specials = [
|
|---|
| 1724 | ("__unicode__", unicode, hello, set(), {}),
|
|---|
| 1725 | ("__reversed__", reversed, empty_seq, set(), {}),
|
|---|
| 1726 | ("__length_hint__", list, zero, set(),
|
|---|
| 1727 | {"__iter__" : iden, "next" : stop}),
|
|---|
| 1728 | ("__sizeof__", sys.getsizeof, zero, set(), {}),
|
|---|
| 1729 | ("__instancecheck__", do_isinstance, return_true, set(), {}),
|
|---|
| 1730 | ("__missing__", do_dict_missing, some_number,
|
|---|
| 1731 | set(("__class__",)), {}),
|
|---|
| 1732 | ("__subclasscheck__", do_issubclass, return_true,
|
|---|
| 1733 | set(("__bases__",)), {}),
|
|---|
| 1734 | ("__enter__", run_context, iden, set(), {"__exit__" : swallow}),
|
|---|
| 1735 | ("__exit__", run_context, swallow, set(), {"__enter__" : iden}),
|
|---|
| 1736 | ("__complex__", complex, complex_num, set(), {}),
|
|---|
| 1737 | ("__format__", format, format_impl, set(), {}),
|
|---|
| 1738 | ("__dir__", dir, empty_seq, set(), {}),
|
|---|
| 1739 | ]
|
|---|
| 1740 |
|
|---|
| 1741 | class Checker(object):
|
|---|
| 1742 | def __getattr__(self, attr, test=self):
|
|---|
| 1743 | test.fail("__getattr__ called with {0}".format(attr))
|
|---|
| 1744 | def __getattribute__(self, attr, test=self):
|
|---|
| 1745 | if attr not in ok:
|
|---|
| 1746 | test.fail("__getattribute__ called with {0}".format(attr))
|
|---|
| 1747 | return object.__getattribute__(self, attr)
|
|---|
| 1748 | class SpecialDescr(object):
|
|---|
| 1749 | def __init__(self, impl):
|
|---|
| 1750 | self.impl = impl
|
|---|
| 1751 | def __get__(self, obj, owner):
|
|---|
| 1752 | record.append(1)
|
|---|
| 1753 | return self.impl.__get__(obj, owner)
|
|---|
| 1754 | class MyException(Exception):
|
|---|
| 1755 | pass
|
|---|
| 1756 | class ErrDescr(object):
|
|---|
| 1757 | def __get__(self, obj, owner):
|
|---|
| 1758 | raise MyException
|
|---|
| 1759 |
|
|---|
| 1760 | for name, runner, meth_impl, ok, env in specials:
|
|---|
| 1761 | class X(Checker):
|
|---|
| 1762 | pass
|
|---|
| 1763 | for attr, obj in env.iteritems():
|
|---|
| 1764 | setattr(X, attr, obj)
|
|---|
| 1765 | setattr(X, name, meth_impl)
|
|---|
| 1766 | runner(X())
|
|---|
| 1767 |
|
|---|
| 1768 | record = []
|
|---|
| 1769 | class X(Checker):
|
|---|
| 1770 | pass
|
|---|
| 1771 | for attr, obj in env.iteritems():
|
|---|
| 1772 | setattr(X, attr, obj)
|
|---|
| 1773 | setattr(X, name, SpecialDescr(meth_impl))
|
|---|
| 1774 | runner(X())
|
|---|
| 1775 | self.assertEqual(record, [1], name)
|
|---|
| 1776 |
|
|---|
| 1777 | class X(Checker):
|
|---|
| 1778 | pass
|
|---|
| 1779 | for attr, obj in env.iteritems():
|
|---|
| 1780 | setattr(X, attr, obj)
|
|---|
| 1781 | setattr(X, name, ErrDescr())
|
|---|
| 1782 | try:
|
|---|
| 1783 | runner(X())
|
|---|
| 1784 | except MyException:
|
|---|
| 1785 | pass
|
|---|
| 1786 | else:
|
|---|
| 1787 | self.fail("{0!r} didn't raise".format(name))
|
|---|
| 1788 |
|
|---|
| 1789 | def test_specials(self):
|
|---|
| 1790 | # Testing special operators...
|
|---|
| 1791 | # Test operators like __hash__ for which a built-in default exists
|
|---|
| 1792 |
|
|---|
| 1793 | # Test the default behavior for static classes
|
|---|
| 1794 | class C(object):
|
|---|
| 1795 | def __getitem__(self, i):
|
|---|
| 1796 | if 0 <= i < 10: return i
|
|---|
| 1797 | raise IndexError
|
|---|
| 1798 | c1 = C()
|
|---|
| 1799 | c2 = C()
|
|---|
| 1800 | self.assertTrue(not not c1) # What?
|
|---|
| 1801 | self.assertNotEqual(id(c1), id(c2))
|
|---|
| 1802 | hash(c1)
|
|---|
| 1803 | hash(c2)
|
|---|
| 1804 | self.assertEqual(cmp(c1, c2), cmp(id(c1), id(c2)))
|
|---|
| 1805 | self.assertEqual(c1, c1)
|
|---|
| 1806 | self.assertTrue(c1 != c2)
|
|---|
| 1807 | self.assertTrue(not c1 != c1)
|
|---|
| 1808 | self.assertTrue(not c1 == c2)
|
|---|
| 1809 | # Note that the module name appears in str/repr, and that varies
|
|---|
| 1810 | # depending on whether this test is run standalone or from a framework.
|
|---|
| 1811 | self.assertTrue(str(c1).find('C object at ') >= 0)
|
|---|
| 1812 | self.assertEqual(str(c1), repr(c1))
|
|---|
| 1813 | self.assertNotIn(-1, c1)
|
|---|
| 1814 | for i in range(10):
|
|---|
| 1815 | self.assertIn(i, c1)
|
|---|
| 1816 | self.assertNotIn(10, c1)
|
|---|
| 1817 | # Test the default behavior for dynamic classes
|
|---|
| 1818 | class D(object):
|
|---|
| 1819 | def __getitem__(self, i):
|
|---|
| 1820 | if 0 <= i < 10: return i
|
|---|
| 1821 | raise IndexError
|
|---|
| 1822 | d1 = D()
|
|---|
| 1823 | d2 = D()
|
|---|
| 1824 | self.assertTrue(not not d1)
|
|---|
| 1825 | self.assertNotEqual(id(d1), id(d2))
|
|---|
| 1826 | hash(d1)
|
|---|
| 1827 | hash(d2)
|
|---|
| 1828 | self.assertEqual(cmp(d1, d2), cmp(id(d1), id(d2)))
|
|---|
| 1829 | self.assertEqual(d1, d1)
|
|---|
| 1830 | self.assertNotEqual(d1, d2)
|
|---|
| 1831 | self.assertTrue(not d1 != d1)
|
|---|
| 1832 | self.assertTrue(not d1 == d2)
|
|---|
| 1833 | # Note that the module name appears in str/repr, and that varies
|
|---|
| 1834 | # depending on whether this test is run standalone or from a framework.
|
|---|
| 1835 | self.assertTrue(str(d1).find('D object at ') >= 0)
|
|---|
| 1836 | self.assertEqual(str(d1), repr(d1))
|
|---|
| 1837 | self.assertNotIn(-1, d1)
|
|---|
| 1838 | for i in range(10):
|
|---|
| 1839 | self.assertIn(i, d1)
|
|---|
| 1840 | self.assertNotIn(10, d1)
|
|---|
| 1841 | # Test overridden behavior for static classes
|
|---|
| 1842 | class Proxy(object):
|
|---|
| 1843 | def __init__(self, x):
|
|---|
| 1844 | self.x = x
|
|---|
| 1845 | def __nonzero__(self):
|
|---|
| 1846 | return not not self.x
|
|---|
| 1847 | def __hash__(self):
|
|---|
| 1848 | return hash(self.x)
|
|---|
| 1849 | def __eq__(self, other):
|
|---|
| 1850 | return self.x == other
|
|---|
| 1851 | def __ne__(self, other):
|
|---|
| 1852 | return self.x != other
|
|---|
| 1853 | def __cmp__(self, other):
|
|---|
| 1854 | return cmp(self.x, other.x)
|
|---|
| 1855 | def __str__(self):
|
|---|
| 1856 | return "Proxy:%s" % self.x
|
|---|
| 1857 | def __repr__(self):
|
|---|
| 1858 | return "Proxy(%r)" % self.x
|
|---|
| 1859 | def __contains__(self, value):
|
|---|
| 1860 | return value in self.x
|
|---|
| 1861 | p0 = Proxy(0)
|
|---|
| 1862 | p1 = Proxy(1)
|
|---|
| 1863 | p_1 = Proxy(-1)
|
|---|
| 1864 | self.assertFalse(p0)
|
|---|
| 1865 | self.assertTrue(not not p1)
|
|---|
| 1866 | self.assertEqual(hash(p0), hash(0))
|
|---|
| 1867 | self.assertEqual(p0, p0)
|
|---|
| 1868 | self.assertNotEqual(p0, p1)
|
|---|
| 1869 | self.assertTrue(not p0 != p0)
|
|---|
| 1870 | self.assertEqual(not p0, p1)
|
|---|
| 1871 | self.assertEqual(cmp(p0, p1), -1)
|
|---|
| 1872 | self.assertEqual(cmp(p0, p0), 0)
|
|---|
| 1873 | self.assertEqual(cmp(p0, p_1), 1)
|
|---|
| 1874 | self.assertEqual(str(p0), "Proxy:0")
|
|---|
| 1875 | self.assertEqual(repr(p0), "Proxy(0)")
|
|---|
| 1876 | p10 = Proxy(range(10))
|
|---|
| 1877 | self.assertNotIn(-1, p10)
|
|---|
| 1878 | for i in range(10):
|
|---|
| 1879 | self.assertIn(i, p10)
|
|---|
| 1880 | self.assertNotIn(10, p10)
|
|---|
| 1881 | # Test overridden behavior for dynamic classes
|
|---|
| 1882 | class DProxy(object):
|
|---|
| 1883 | def __init__(self, x):
|
|---|
| 1884 | self.x = x
|
|---|
| 1885 | def __nonzero__(self):
|
|---|
| 1886 | return not not self.x
|
|---|
| 1887 | def __hash__(self):
|
|---|
| 1888 | return hash(self.x)
|
|---|
| 1889 | def __eq__(self, other):
|
|---|
| 1890 | return self.x == other
|
|---|
| 1891 | def __ne__(self, other):
|
|---|
| 1892 | return self.x != other
|
|---|
| 1893 | def __cmp__(self, other):
|
|---|
| 1894 | return cmp(self.x, other.x)
|
|---|
| 1895 | def __str__(self):
|
|---|
| 1896 | return "DProxy:%s" % self.x
|
|---|
| 1897 | def __repr__(self):
|
|---|
| 1898 | return "DProxy(%r)" % self.x
|
|---|
| 1899 | def __contains__(self, value):
|
|---|
| 1900 | return value in self.x
|
|---|
| 1901 | p0 = DProxy(0)
|
|---|
| 1902 | p1 = DProxy(1)
|
|---|
| 1903 | p_1 = DProxy(-1)
|
|---|
| 1904 | self.assertFalse(p0)
|
|---|
| 1905 | self.assertTrue(not not p1)
|
|---|
| 1906 | self.assertEqual(hash(p0), hash(0))
|
|---|
| 1907 | self.assertEqual(p0, p0)
|
|---|
| 1908 | self.assertNotEqual(p0, p1)
|
|---|
| 1909 | self.assertNotEqual(not p0, p0)
|
|---|
| 1910 | self.assertEqual(not p0, p1)
|
|---|
| 1911 | self.assertEqual(cmp(p0, p1), -1)
|
|---|
| 1912 | self.assertEqual(cmp(p0, p0), 0)
|
|---|
| 1913 | self.assertEqual(cmp(p0, p_1), 1)
|
|---|
| 1914 | self.assertEqual(str(p0), "DProxy:0")
|
|---|
| 1915 | self.assertEqual(repr(p0), "DProxy(0)")
|
|---|
| 1916 | p10 = DProxy(range(10))
|
|---|
| 1917 | self.assertNotIn(-1, p10)
|
|---|
| 1918 | for i in range(10):
|
|---|
| 1919 | self.assertIn(i, p10)
|
|---|
| 1920 | self.assertNotIn(10, p10)
|
|---|
| 1921 |
|
|---|
| 1922 | # Safety test for __cmp__
|
|---|
| 1923 | def unsafecmp(a, b):
|
|---|
| 1924 | if not hasattr(a, '__cmp__'):
|
|---|
| 1925 | return # some types don't have a __cmp__ any more (so the
|
|---|
| 1926 | # test doesn't make sense any more), or maybe they
|
|---|
| 1927 | # never had a __cmp__ at all, e.g. in PyPy
|
|---|
| 1928 | try:
|
|---|
| 1929 | a.__class__.__cmp__(a, b)
|
|---|
| 1930 | except TypeError:
|
|---|
| 1931 | pass
|
|---|
| 1932 | else:
|
|---|
| 1933 | self.fail("shouldn't allow %s.__cmp__(%r, %r)" % (
|
|---|
| 1934 | a.__class__, a, b))
|
|---|
| 1935 |
|
|---|
| 1936 | unsafecmp(u"123", "123")
|
|---|
| 1937 | unsafecmp("123", u"123")
|
|---|
| 1938 | unsafecmp(1, 1.0)
|
|---|
| 1939 | unsafecmp(1.0, 1)
|
|---|
| 1940 | unsafecmp(1, 1L)
|
|---|
| 1941 | unsafecmp(1L, 1)
|
|---|
| 1942 |
|
|---|
| 1943 | @test_support.impl_detail("custom logic for printing to real file objects")
|
|---|
| 1944 | def test_recursions_1(self):
|
|---|
| 1945 | # Testing recursion checks ...
|
|---|
| 1946 | class Letter(str):
|
|---|
| 1947 | def __new__(cls, letter):
|
|---|
| 1948 | if letter == 'EPS':
|
|---|
| 1949 | return str.__new__(cls)
|
|---|
| 1950 | return str.__new__(cls, letter)
|
|---|
| 1951 | def __str__(self):
|
|---|
| 1952 | if not self:
|
|---|
| 1953 | return 'EPS'
|
|---|
| 1954 | return self
|
|---|
| 1955 | # sys.stdout needs to be the original to trigger the recursion bug
|
|---|
| 1956 | test_stdout = sys.stdout
|
|---|
| 1957 | sys.stdout = test_support.get_original_stdout()
|
|---|
| 1958 | try:
|
|---|
| 1959 | # nothing should actually be printed, this should raise an exception
|
|---|
| 1960 | print Letter('w')
|
|---|
| 1961 | except RuntimeError:
|
|---|
| 1962 | pass
|
|---|
| 1963 | else:
|
|---|
| 1964 | self.fail("expected a RuntimeError for print recursion")
|
|---|
| 1965 | finally:
|
|---|
| 1966 | sys.stdout = test_stdout
|
|---|
| 1967 |
|
|---|
| 1968 | def test_recursions_2(self):
|
|---|
| 1969 | # Bug #1202533.
|
|---|
| 1970 | class A(object):
|
|---|
| 1971 | pass
|
|---|
| 1972 | A.__mul__ = types.MethodType(lambda self, x: self * x, None, A)
|
|---|
| 1973 | try:
|
|---|
| 1974 | A()*2
|
|---|
| 1975 | except RuntimeError:
|
|---|
| 1976 | pass
|
|---|
| 1977 | else:
|
|---|
| 1978 | self.fail("expected a RuntimeError")
|
|---|
| 1979 |
|
|---|
| 1980 | def test_weakrefs(self):
|
|---|
| 1981 | # Testing weak references...
|
|---|
| 1982 | import weakref
|
|---|
| 1983 | class C(object):
|
|---|
| 1984 | pass
|
|---|
| 1985 | c = C()
|
|---|
| 1986 | r = weakref.ref(c)
|
|---|
| 1987 | self.assertEqual(r(), c)
|
|---|
| 1988 | del c
|
|---|
| 1989 | test_support.gc_collect()
|
|---|
| 1990 | self.assertEqual(r(), None)
|
|---|
| 1991 | del r
|
|---|
| 1992 | class NoWeak(object):
|
|---|
| 1993 | __slots__ = ['foo']
|
|---|
| 1994 | no = NoWeak()
|
|---|
| 1995 | try:
|
|---|
| 1996 | weakref.ref(no)
|
|---|
| 1997 | except TypeError, msg:
|
|---|
| 1998 | self.assertTrue(str(msg).find("weak reference") >= 0)
|
|---|
| 1999 | else:
|
|---|
| 2000 | self.fail("weakref.ref(no) should be illegal")
|
|---|
| 2001 | class Weak(object):
|
|---|
| 2002 | __slots__ = ['foo', '__weakref__']
|
|---|
| 2003 | yes = Weak()
|
|---|
| 2004 | r = weakref.ref(yes)
|
|---|
| 2005 | self.assertEqual(r(), yes)
|
|---|
| 2006 | del yes
|
|---|
| 2007 | test_support.gc_collect()
|
|---|
| 2008 | self.assertEqual(r(), None)
|
|---|
| 2009 | del r
|
|---|
| 2010 |
|
|---|
| 2011 | def test_properties(self):
|
|---|
| 2012 | # Testing property...
|
|---|
| 2013 | class C(object):
|
|---|
| 2014 | def getx(self):
|
|---|
| 2015 | return self.__x
|
|---|
| 2016 | def setx(self, value):
|
|---|
| 2017 | self.__x = value
|
|---|
| 2018 | def delx(self):
|
|---|
| 2019 | del self.__x
|
|---|
| 2020 | x = property(getx, setx, delx, doc="I'm the x property.")
|
|---|
| 2021 | a = C()
|
|---|
| 2022 | self.assertFalse(hasattr(a, "x"))
|
|---|
| 2023 | a.x = 42
|
|---|
| 2024 | self.assertEqual(a._C__x, 42)
|
|---|
| 2025 | self.assertEqual(a.x, 42)
|
|---|
| 2026 | del a.x
|
|---|
| 2027 | self.assertFalse(hasattr(a, "x"))
|
|---|
| 2028 | self.assertFalse(hasattr(a, "_C__x"))
|
|---|
| 2029 | C.x.__set__(a, 100)
|
|---|
| 2030 | self.assertEqual(C.x.__get__(a), 100)
|
|---|
| 2031 | C.x.__delete__(a)
|
|---|
| 2032 | self.assertFalse(hasattr(a, "x"))
|
|---|
| 2033 |
|
|---|
| 2034 | raw = C.__dict__['x']
|
|---|
| 2035 | self.assertIsInstance(raw, property)
|
|---|
| 2036 |
|
|---|
| 2037 | attrs = dir(raw)
|
|---|
| 2038 | self.assertIn("__doc__", attrs)
|
|---|
| 2039 | self.assertIn("fget", attrs)
|
|---|
| 2040 | self.assertIn("fset", attrs)
|
|---|
| 2041 | self.assertIn("fdel", attrs)
|
|---|
| 2042 |
|
|---|
| 2043 | self.assertEqual(raw.__doc__, "I'm the x property.")
|
|---|
| 2044 | self.assertTrue(raw.fget is C.__dict__['getx'])
|
|---|
| 2045 | self.assertTrue(raw.fset is C.__dict__['setx'])
|
|---|
| 2046 | self.assertTrue(raw.fdel is C.__dict__['delx'])
|
|---|
| 2047 |
|
|---|
| 2048 | for attr in "__doc__", "fget", "fset", "fdel":
|
|---|
| 2049 | try:
|
|---|
| 2050 | setattr(raw, attr, 42)
|
|---|
| 2051 | except TypeError, msg:
|
|---|
| 2052 | if str(msg).find('readonly') < 0:
|
|---|
| 2053 | self.fail("when setting readonly attr %r on a property, "
|
|---|
| 2054 | "got unexpected TypeError msg %r" % (attr, str(msg)))
|
|---|
| 2055 | else:
|
|---|
| 2056 | self.fail("expected TypeError from trying to set readonly %r "
|
|---|
| 2057 | "attr on a property" % attr)
|
|---|
| 2058 |
|
|---|
| 2059 | class D(object):
|
|---|
| 2060 | __getitem__ = property(lambda s: 1/0)
|
|---|
| 2061 |
|
|---|
| 2062 | d = D()
|
|---|
| 2063 | try:
|
|---|
| 2064 | for i in d:
|
|---|
| 2065 | str(i)
|
|---|
| 2066 | except ZeroDivisionError:
|
|---|
| 2067 | pass
|
|---|
| 2068 | else:
|
|---|
| 2069 | self.fail("expected ZeroDivisionError from bad property")
|
|---|
| 2070 |
|
|---|
| 2071 | @unittest.skipIf(sys.flags.optimize >= 2,
|
|---|
| 2072 | "Docstrings are omitted with -O2 and above")
|
|---|
| 2073 | def test_properties_doc_attrib(self):
|
|---|
| 2074 | class E(object):
|
|---|
| 2075 | def getter(self):
|
|---|
| 2076 | "getter method"
|
|---|
| 2077 | return 0
|
|---|
| 2078 | def setter(self_, value):
|
|---|
| 2079 | "setter method"
|
|---|
| 2080 | pass
|
|---|
| 2081 | prop = property(getter)
|
|---|
| 2082 | self.assertEqual(prop.__doc__, "getter method")
|
|---|
| 2083 | prop2 = property(fset=setter)
|
|---|
| 2084 | self.assertEqual(prop2.__doc__, None)
|
|---|
| 2085 |
|
|---|
| 2086 | def test_testcapi_no_segfault(self):
|
|---|
| 2087 | # this segfaulted in 2.5b2
|
|---|
| 2088 | try:
|
|---|
| 2089 | import _testcapi
|
|---|
| 2090 | except ImportError:
|
|---|
| 2091 | pass
|
|---|
| 2092 | else:
|
|---|
| 2093 | class X(object):
|
|---|
| 2094 | p = property(_testcapi.test_with_docstring)
|
|---|
| 2095 |
|
|---|
| 2096 | def test_properties_plus(self):
|
|---|
| 2097 | class C(object):
|
|---|
| 2098 | foo = property(doc="hello")
|
|---|
| 2099 | @foo.getter
|
|---|
| 2100 | def foo(self):
|
|---|
| 2101 | return self._foo
|
|---|
| 2102 | @foo.setter
|
|---|
| 2103 | def foo(self, value):
|
|---|
| 2104 | self._foo = abs(value)
|
|---|
| 2105 | @foo.deleter
|
|---|
| 2106 | def foo(self):
|
|---|
| 2107 | del self._foo
|
|---|
| 2108 | c = C()
|
|---|
| 2109 | self.assertEqual(C.foo.__doc__, "hello")
|
|---|
| 2110 | self.assertFalse(hasattr(c, "foo"))
|
|---|
| 2111 | c.foo = -42
|
|---|
| 2112 | self.assertTrue(hasattr(c, '_foo'))
|
|---|
| 2113 | self.assertEqual(c._foo, 42)
|
|---|
| 2114 | self.assertEqual(c.foo, 42)
|
|---|
| 2115 | del c.foo
|
|---|
| 2116 | self.assertFalse(hasattr(c, '_foo'))
|
|---|
| 2117 | self.assertFalse(hasattr(c, "foo"))
|
|---|
| 2118 |
|
|---|
| 2119 | class D(C):
|
|---|
| 2120 | @C.foo.deleter
|
|---|
| 2121 | def foo(self):
|
|---|
| 2122 | try:
|
|---|
| 2123 | del self._foo
|
|---|
| 2124 | except AttributeError:
|
|---|
| 2125 | pass
|
|---|
| 2126 | d = D()
|
|---|
| 2127 | d.foo = 24
|
|---|
| 2128 | self.assertEqual(d.foo, 24)
|
|---|
| 2129 | del d.foo
|
|---|
| 2130 | del d.foo
|
|---|
| 2131 |
|
|---|
| 2132 | class E(object):
|
|---|
| 2133 | @property
|
|---|
| 2134 | def foo(self):
|
|---|
| 2135 | return self._foo
|
|---|
| 2136 | @foo.setter
|
|---|
| 2137 | def foo(self, value):
|
|---|
| 2138 | raise RuntimeError
|
|---|
| 2139 | @foo.setter
|
|---|
| 2140 | def foo(self, value):
|
|---|
| 2141 | self._foo = abs(value)
|
|---|
| 2142 | @foo.deleter
|
|---|
| 2143 | def foo(self, value=None):
|
|---|
| 2144 | del self._foo
|
|---|
| 2145 |
|
|---|
| 2146 | e = E()
|
|---|
| 2147 | e.foo = -42
|
|---|
| 2148 | self.assertEqual(e.foo, 42)
|
|---|
| 2149 | del e.foo
|
|---|
| 2150 |
|
|---|
| 2151 | class F(E):
|
|---|
| 2152 | @E.foo.deleter
|
|---|
| 2153 | def foo(self):
|
|---|
| 2154 | del self._foo
|
|---|
| 2155 | @foo.setter
|
|---|
| 2156 | def foo(self, value):
|
|---|
| 2157 | self._foo = max(0, value)
|
|---|
| 2158 | f = F()
|
|---|
| 2159 | f.foo = -10
|
|---|
| 2160 | self.assertEqual(f.foo, 0)
|
|---|
| 2161 | del f.foo
|
|---|
| 2162 |
|
|---|
| 2163 | def test_dict_constructors(self):
|
|---|
| 2164 | # Testing dict constructor ...
|
|---|
| 2165 | d = dict()
|
|---|
| 2166 | self.assertEqual(d, {})
|
|---|
| 2167 | d = dict({})
|
|---|
| 2168 | self.assertEqual(d, {})
|
|---|
| 2169 | d = dict({1: 2, 'a': 'b'})
|
|---|
| 2170 | self.assertEqual(d, {1: 2, 'a': 'b'})
|
|---|
| 2171 | self.assertEqual(d, dict(d.items()))
|
|---|
| 2172 | self.assertEqual(d, dict(d.iteritems()))
|
|---|
| 2173 | d = dict({'one':1, 'two':2})
|
|---|
| 2174 | self.assertEqual(d, dict(one=1, two=2))
|
|---|
| 2175 | self.assertEqual(d, dict(**d))
|
|---|
| 2176 | self.assertEqual(d, dict({"one": 1}, two=2))
|
|---|
| 2177 | self.assertEqual(d, dict([("two", 2)], one=1))
|
|---|
| 2178 | self.assertEqual(d, dict([("one", 100), ("two", 200)], **d))
|
|---|
| 2179 | self.assertEqual(d, dict(**d))
|
|---|
| 2180 |
|
|---|
| 2181 | for badarg in 0, 0L, 0j, "0", [0], (0,):
|
|---|
| 2182 | try:
|
|---|
| 2183 | dict(badarg)
|
|---|
| 2184 | except TypeError:
|
|---|
| 2185 | pass
|
|---|
| 2186 | except ValueError:
|
|---|
| 2187 | if badarg == "0":
|
|---|
| 2188 | # It's a sequence, and its elements are also sequences (gotta
|
|---|
| 2189 | # love strings <wink>), but they aren't of length 2, so this
|
|---|
| 2190 | # one seemed better as a ValueError than a TypeError.
|
|---|
| 2191 | pass
|
|---|
| 2192 | else:
|
|---|
| 2193 | self.fail("no TypeError from dict(%r)" % badarg)
|
|---|
| 2194 | else:
|
|---|
| 2195 | self.fail("no TypeError from dict(%r)" % badarg)
|
|---|
| 2196 |
|
|---|
| 2197 | try:
|
|---|
| 2198 | dict({}, {})
|
|---|
| 2199 | except TypeError:
|
|---|
| 2200 | pass
|
|---|
| 2201 | else:
|
|---|
| 2202 | self.fail("no TypeError from dict({}, {})")
|
|---|
| 2203 |
|
|---|
| 2204 | class Mapping:
|
|---|
| 2205 | # Lacks a .keys() method; will be added later.
|
|---|
| 2206 | dict = {1:2, 3:4, 'a':1j}
|
|---|
| 2207 |
|
|---|
| 2208 | try:
|
|---|
| 2209 | dict(Mapping())
|
|---|
| 2210 | except TypeError:
|
|---|
| 2211 | pass
|
|---|
| 2212 | else:
|
|---|
| 2213 | self.fail("no TypeError from dict(incomplete mapping)")
|
|---|
| 2214 |
|
|---|
| 2215 | Mapping.keys = lambda self: self.dict.keys()
|
|---|
| 2216 | Mapping.__getitem__ = lambda self, i: self.dict[i]
|
|---|
| 2217 | d = dict(Mapping())
|
|---|
| 2218 | self.assertEqual(d, Mapping.dict)
|
|---|
| 2219 |
|
|---|
| 2220 | # Init from sequence of iterable objects, each producing a 2-sequence.
|
|---|
| 2221 | class AddressBookEntry:
|
|---|
| 2222 | def __init__(self, first, last):
|
|---|
| 2223 | self.first = first
|
|---|
| 2224 | self.last = last
|
|---|
| 2225 | def __iter__(self):
|
|---|
| 2226 | return iter([self.first, self.last])
|
|---|
| 2227 |
|
|---|
| 2228 | d = dict([AddressBookEntry('Tim', 'Warsaw'),
|
|---|
| 2229 | AddressBookEntry('Barry', 'Peters'),
|
|---|
| 2230 | AddressBookEntry('Tim', 'Peters'),
|
|---|
| 2231 | AddressBookEntry('Barry', 'Warsaw')])
|
|---|
| 2232 | self.assertEqual(d, {'Barry': 'Warsaw', 'Tim': 'Peters'})
|
|---|
| 2233 |
|
|---|
| 2234 | d = dict(zip(range(4), range(1, 5)))
|
|---|
| 2235 | self.assertEqual(d, dict([(i, i+1) for i in range(4)]))
|
|---|
| 2236 |
|
|---|
| 2237 | # Bad sequence lengths.
|
|---|
| 2238 | for bad in [('tooshort',)], [('too', 'long', 'by 1')]:
|
|---|
| 2239 | try:
|
|---|
| 2240 | dict(bad)
|
|---|
| 2241 | except ValueError:
|
|---|
| 2242 | pass
|
|---|
| 2243 | else:
|
|---|
| 2244 | self.fail("no ValueError from dict(%r)" % bad)
|
|---|
| 2245 |
|
|---|
| 2246 | def test_dir(self):
|
|---|
| 2247 | # Testing dir() ...
|
|---|
| 2248 | junk = 12
|
|---|
| 2249 | self.assertEqual(dir(), ['junk', 'self'])
|
|---|
| 2250 | del junk
|
|---|
| 2251 |
|
|---|
| 2252 | # Just make sure these don't blow up!
|
|---|
| 2253 | for arg in 2, 2L, 2j, 2e0, [2], "2", u"2", (2,), {2:2}, type, self.test_dir:
|
|---|
| 2254 | dir(arg)
|
|---|
| 2255 |
|
|---|
| 2256 | # Try classic classes.
|
|---|
| 2257 | class C:
|
|---|
| 2258 | Cdata = 1
|
|---|
| 2259 | def Cmethod(self): pass
|
|---|
| 2260 |
|
|---|
| 2261 | cstuff = ['Cdata', 'Cmethod', '__doc__', '__module__']
|
|---|
| 2262 | self.assertEqual(dir(C), cstuff)
|
|---|
| 2263 | self.assertIn('im_self', dir(C.Cmethod))
|
|---|
| 2264 |
|
|---|
| 2265 | c = C() # c.__doc__ is an odd thing to see here; ditto c.__module__.
|
|---|
| 2266 | self.assertEqual(dir(c), cstuff)
|
|---|
| 2267 |
|
|---|
| 2268 | c.cdata = 2
|
|---|
| 2269 | c.cmethod = lambda self: 0
|
|---|
| 2270 | self.assertEqual(dir(c), cstuff + ['cdata', 'cmethod'])
|
|---|
| 2271 | self.assertIn('im_self', dir(c.Cmethod))
|
|---|
| 2272 |
|
|---|
| 2273 | class A(C):
|
|---|
| 2274 | Adata = 1
|
|---|
| 2275 | def Amethod(self): pass
|
|---|
| 2276 |
|
|---|
| 2277 | astuff = ['Adata', 'Amethod'] + cstuff
|
|---|
| 2278 | self.assertEqual(dir(A), astuff)
|
|---|
| 2279 | self.assertIn('im_self', dir(A.Amethod))
|
|---|
| 2280 | a = A()
|
|---|
| 2281 | self.assertEqual(dir(a), astuff)
|
|---|
| 2282 | self.assertIn('im_self', dir(a.Amethod))
|
|---|
| 2283 | a.adata = 42
|
|---|
| 2284 | a.amethod = lambda self: 3
|
|---|
| 2285 | self.assertEqual(dir(a), astuff + ['adata', 'amethod'])
|
|---|
| 2286 |
|
|---|
| 2287 | # The same, but with new-style classes. Since these have object as a
|
|---|
| 2288 | # base class, a lot more gets sucked in.
|
|---|
| 2289 | def interesting(strings):
|
|---|
| 2290 | return [s for s in strings if not s.startswith('_')]
|
|---|
| 2291 |
|
|---|
| 2292 | class C(object):
|
|---|
| 2293 | Cdata = 1
|
|---|
| 2294 | def Cmethod(self): pass
|
|---|
| 2295 |
|
|---|
| 2296 | cstuff = ['Cdata', 'Cmethod']
|
|---|
| 2297 | self.assertEqual(interesting(dir(C)), cstuff)
|
|---|
| 2298 |
|
|---|
| 2299 | c = C()
|
|---|
| 2300 | self.assertEqual(interesting(dir(c)), cstuff)
|
|---|
| 2301 | self.assertIn('im_self', dir(C.Cmethod))
|
|---|
| 2302 |
|
|---|
| 2303 | c.cdata = 2
|
|---|
| 2304 | c.cmethod = lambda self: 0
|
|---|
| 2305 | self.assertEqual(interesting(dir(c)), cstuff + ['cdata', 'cmethod'])
|
|---|
| 2306 | self.assertIn('im_self', dir(c.Cmethod))
|
|---|
| 2307 |
|
|---|
| 2308 | class A(C):
|
|---|
| 2309 | Adata = 1
|
|---|
| 2310 | def Amethod(self): pass
|
|---|
| 2311 |
|
|---|
| 2312 | astuff = ['Adata', 'Amethod'] + cstuff
|
|---|
| 2313 | self.assertEqual(interesting(dir(A)), astuff)
|
|---|
| 2314 | self.assertIn('im_self', dir(A.Amethod))
|
|---|
| 2315 | a = A()
|
|---|
| 2316 | self.assertEqual(interesting(dir(a)), astuff)
|
|---|
| 2317 | a.adata = 42
|
|---|
| 2318 | a.amethod = lambda self: 3
|
|---|
| 2319 | self.assertEqual(interesting(dir(a)), astuff + ['adata', 'amethod'])
|
|---|
| 2320 | self.assertIn('im_self', dir(a.Amethod))
|
|---|
| 2321 |
|
|---|
| 2322 | # Try a module subclass.
|
|---|
| 2323 | class M(type(sys)):
|
|---|
| 2324 | pass
|
|---|
| 2325 | minstance = M("m")
|
|---|
| 2326 | minstance.b = 2
|
|---|
| 2327 | minstance.a = 1
|
|---|
| 2328 | names = [x for x in dir(minstance) if x not in ["__name__", "__doc__"]]
|
|---|
| 2329 | self.assertEqual(names, ['a', 'b'])
|
|---|
| 2330 |
|
|---|
| 2331 | class M2(M):
|
|---|
| 2332 | def getdict(self):
|
|---|
| 2333 | return "Not a dict!"
|
|---|
| 2334 | __dict__ = property(getdict)
|
|---|
| 2335 |
|
|---|
| 2336 | m2instance = M2("m2")
|
|---|
| 2337 | m2instance.b = 2
|
|---|
| 2338 | m2instance.a = 1
|
|---|
| 2339 | self.assertEqual(m2instance.__dict__, "Not a dict!")
|
|---|
| 2340 | try:
|
|---|
| 2341 | dir(m2instance)
|
|---|
| 2342 | except TypeError:
|
|---|
| 2343 | pass
|
|---|
| 2344 |
|
|---|
| 2345 | # Two essentially featureless objects, just inheriting stuff from
|
|---|
| 2346 | # object.
|
|---|
| 2347 | self.assertEqual(dir(NotImplemented), dir(Ellipsis))
|
|---|
| 2348 | if test_support.check_impl_detail():
|
|---|
| 2349 | # None differs in PyPy: it has a __nonzero__
|
|---|
| 2350 | self.assertEqual(dir(None), dir(Ellipsis))
|
|---|
| 2351 |
|
|---|
| 2352 | # Nasty test case for proxied objects
|
|---|
| 2353 | class Wrapper(object):
|
|---|
| 2354 | def __init__(self, obj):
|
|---|
| 2355 | self.__obj = obj
|
|---|
| 2356 | def __repr__(self):
|
|---|
| 2357 | return "Wrapper(%s)" % repr(self.__obj)
|
|---|
| 2358 | def __getitem__(self, key):
|
|---|
| 2359 | return Wrapper(self.__obj[key])
|
|---|
| 2360 | def __len__(self):
|
|---|
| 2361 | return len(self.__obj)
|
|---|
| 2362 | def __getattr__(self, name):
|
|---|
| 2363 | return Wrapper(getattr(self.__obj, name))
|
|---|
| 2364 |
|
|---|
| 2365 | class C(object):
|
|---|
| 2366 | def __getclass(self):
|
|---|
| 2367 | return Wrapper(type(self))
|
|---|
| 2368 | __class__ = property(__getclass)
|
|---|
| 2369 |
|
|---|
| 2370 | dir(C()) # This used to segfault
|
|---|
| 2371 |
|
|---|
| 2372 | def test_supers(self):
|
|---|
| 2373 | # Testing super...
|
|---|
| 2374 |
|
|---|
| 2375 | class A(object):
|
|---|
| 2376 | def meth(self, a):
|
|---|
| 2377 | return "A(%r)" % a
|
|---|
| 2378 |
|
|---|
| 2379 | self.assertEqual(A().meth(1), "A(1)")
|
|---|
| 2380 |
|
|---|
| 2381 | class B(A):
|
|---|
| 2382 | def __init__(self):
|
|---|
| 2383 | self.__super = super(B, self)
|
|---|
| 2384 | def meth(self, a):
|
|---|
| 2385 | return "B(%r)" % a + self.__super.meth(a)
|
|---|
| 2386 |
|
|---|
| 2387 | self.assertEqual(B().meth(2), "B(2)A(2)")
|
|---|
| 2388 |
|
|---|
| 2389 | class C(A):
|
|---|
| 2390 | def meth(self, a):
|
|---|
| 2391 | return "C(%r)" % a + self.__super.meth(a)
|
|---|
| 2392 | C._C__super = super(C)
|
|---|
| 2393 |
|
|---|
| 2394 | self.assertEqual(C().meth(3), "C(3)A(3)")
|
|---|
| 2395 |
|
|---|
| 2396 | class D(C, B):
|
|---|
| 2397 | def meth(self, a):
|
|---|
| 2398 | return "D(%r)" % a + super(D, self).meth(a)
|
|---|
| 2399 |
|
|---|
| 2400 | self.assertEqual(D().meth(4), "D(4)C(4)B(4)A(4)")
|
|---|
| 2401 |
|
|---|
| 2402 | # Test for subclassing super
|
|---|
| 2403 |
|
|---|
| 2404 | class mysuper(super):
|
|---|
| 2405 | def __init__(self, *args):
|
|---|
| 2406 | return super(mysuper, self).__init__(*args)
|
|---|
| 2407 |
|
|---|
| 2408 | class E(D):
|
|---|
| 2409 | def meth(self, a):
|
|---|
| 2410 | return "E(%r)" % a + mysuper(E, self).meth(a)
|
|---|
| 2411 |
|
|---|
| 2412 | self.assertEqual(E().meth(5), "E(5)D(5)C(5)B(5)A(5)")
|
|---|
| 2413 |
|
|---|
| 2414 | class F(E):
|
|---|
| 2415 | def meth(self, a):
|
|---|
| 2416 | s = self.__super # == mysuper(F, self)
|
|---|
| 2417 | return "F(%r)[%s]" % (a, s.__class__.__name__) + s.meth(a)
|
|---|
| 2418 | F._F__super = mysuper(F)
|
|---|
| 2419 |
|
|---|
| 2420 | self.assertEqual(F().meth(6), "F(6)[mysuper]E(6)D(6)C(6)B(6)A(6)")
|
|---|
| 2421 |
|
|---|
| 2422 | # Make sure certain errors are raised
|
|---|
| 2423 |
|
|---|
| 2424 | try:
|
|---|
| 2425 | super(D, 42)
|
|---|
| 2426 | except TypeError:
|
|---|
| 2427 | pass
|
|---|
| 2428 | else:
|
|---|
| 2429 | self.fail("shouldn't allow super(D, 42)")
|
|---|
| 2430 |
|
|---|
| 2431 | try:
|
|---|
| 2432 | super(D, C())
|
|---|
| 2433 | except TypeError:
|
|---|
| 2434 | pass
|
|---|
| 2435 | else:
|
|---|
| 2436 | self.fail("shouldn't allow super(D, C())")
|
|---|
| 2437 |
|
|---|
| 2438 | try:
|
|---|
| 2439 | super(D).__get__(12)
|
|---|
| 2440 | except TypeError:
|
|---|
| 2441 | pass
|
|---|
| 2442 | else:
|
|---|
| 2443 | self.fail("shouldn't allow super(D).__get__(12)")
|
|---|
| 2444 |
|
|---|
| 2445 | try:
|
|---|
| 2446 | super(D).__get__(C())
|
|---|
| 2447 | except TypeError:
|
|---|
| 2448 | pass
|
|---|
| 2449 | else:
|
|---|
| 2450 | self.fail("shouldn't allow super(D).__get__(C())")
|
|---|
| 2451 |
|
|---|
| 2452 | # Make sure data descriptors can be overridden and accessed via super
|
|---|
| 2453 | # (new feature in Python 2.3)
|
|---|
| 2454 |
|
|---|
| 2455 | class DDbase(object):
|
|---|
| 2456 | def getx(self): return 42
|
|---|
| 2457 | x = property(getx)
|
|---|
| 2458 |
|
|---|
| 2459 | class DDsub(DDbase):
|
|---|
| 2460 | def getx(self): return "hello"
|
|---|
| 2461 | x = property(getx)
|
|---|
| 2462 |
|
|---|
| 2463 | dd = DDsub()
|
|---|
| 2464 | self.assertEqual(dd.x, "hello")
|
|---|
| 2465 | self.assertEqual(super(DDsub, dd).x, 42)
|
|---|
| 2466 |
|
|---|
| 2467 | # Ensure that super() lookup of descriptor from classmethod
|
|---|
| 2468 | # works (SF ID# 743627)
|
|---|
| 2469 |
|
|---|
| 2470 | class Base(object):
|
|---|
| 2471 | aProp = property(lambda self: "foo")
|
|---|
| 2472 |
|
|---|
| 2473 | class Sub(Base):
|
|---|
| 2474 | @classmethod
|
|---|
| 2475 | def test(klass):
|
|---|
| 2476 | return super(Sub,klass).aProp
|
|---|
| 2477 |
|
|---|
| 2478 | self.assertEqual(Sub.test(), Base.aProp)
|
|---|
| 2479 |
|
|---|
| 2480 | # Verify that super() doesn't allow keyword args
|
|---|
| 2481 | try:
|
|---|
| 2482 | super(Base, kw=1)
|
|---|
| 2483 | except TypeError:
|
|---|
| 2484 | pass
|
|---|
| 2485 | else:
|
|---|
| 2486 | self.assertEqual("super shouldn't accept keyword args")
|
|---|
| 2487 |
|
|---|
| 2488 | def test_basic_inheritance(self):
|
|---|
| 2489 | # Testing inheritance from basic types...
|
|---|
| 2490 |
|
|---|
| 2491 | class hexint(int):
|
|---|
| 2492 | def __repr__(self):
|
|---|
| 2493 | return hex(self)
|
|---|
| 2494 | def __add__(self, other):
|
|---|
| 2495 | return hexint(int.__add__(self, other))
|
|---|
| 2496 | # (Note that overriding __radd__ doesn't work,
|
|---|
| 2497 | # because the int type gets first dibs.)
|
|---|
| 2498 | self.assertEqual(repr(hexint(7) + 9), "0x10")
|
|---|
| 2499 | self.assertEqual(repr(hexint(1000) + 7), "0x3ef")
|
|---|
| 2500 | a = hexint(12345)
|
|---|
| 2501 | self.assertEqual(a, 12345)
|
|---|
| 2502 | self.assertEqual(int(a), 12345)
|
|---|
| 2503 | self.assertTrue(int(a).__class__ is int)
|
|---|
| 2504 | self.assertEqual(hash(a), hash(12345))
|
|---|
| 2505 | self.assertTrue((+a).__class__ is int)
|
|---|
| 2506 | self.assertTrue((a >> 0).__class__ is int)
|
|---|
| 2507 | self.assertTrue((a << 0).__class__ is int)
|
|---|
| 2508 | self.assertTrue((hexint(0) << 12).__class__ is int)
|
|---|
| 2509 | self.assertTrue((hexint(0) >> 12).__class__ is int)
|
|---|
| 2510 |
|
|---|
| 2511 | class octlong(long):
|
|---|
| 2512 | __slots__ = []
|
|---|
| 2513 | def __str__(self):
|
|---|
| 2514 | s = oct(self)
|
|---|
| 2515 | if s[-1] == 'L':
|
|---|
| 2516 | s = s[:-1]
|
|---|
| 2517 | return s
|
|---|
| 2518 | def __add__(self, other):
|
|---|
| 2519 | return self.__class__(super(octlong, self).__add__(other))
|
|---|
| 2520 | __radd__ = __add__
|
|---|
| 2521 | self.assertEqual(str(octlong(3) + 5), "010")
|
|---|
| 2522 | # (Note that overriding __radd__ here only seems to work
|
|---|
| 2523 | # because the example uses a short int left argument.)
|
|---|
| 2524 | self.assertEqual(str(5 + octlong(3000)), "05675")
|
|---|
| 2525 | a = octlong(12345)
|
|---|
| 2526 | self.assertEqual(a, 12345L)
|
|---|
| 2527 | self.assertEqual(long(a), 12345L)
|
|---|
| 2528 | self.assertEqual(hash(a), hash(12345L))
|
|---|
| 2529 | self.assertTrue(long(a).__class__ is long)
|
|---|
| 2530 | self.assertTrue((+a).__class__ is long)
|
|---|
| 2531 | self.assertTrue((-a).__class__ is long)
|
|---|
| 2532 | self.assertTrue((-octlong(0)).__class__ is long)
|
|---|
| 2533 | self.assertTrue((a >> 0).__class__ is long)
|
|---|
| 2534 | self.assertTrue((a << 0).__class__ is long)
|
|---|
| 2535 | self.assertTrue((a - 0).__class__ is long)
|
|---|
| 2536 | self.assertTrue((a * 1).__class__ is long)
|
|---|
| 2537 | self.assertTrue((a ** 1).__class__ is long)
|
|---|
| 2538 | self.assertTrue((a // 1).__class__ is long)
|
|---|
| 2539 | self.assertTrue((1 * a).__class__ is long)
|
|---|
| 2540 | self.assertTrue((a | 0).__class__ is long)
|
|---|
| 2541 | self.assertTrue((a ^ 0).__class__ is long)
|
|---|
| 2542 | self.assertTrue((a & -1L).__class__ is long)
|
|---|
| 2543 | self.assertTrue((octlong(0) << 12).__class__ is long)
|
|---|
| 2544 | self.assertTrue((octlong(0) >> 12).__class__ is long)
|
|---|
| 2545 | self.assertTrue(abs(octlong(0)).__class__ is long)
|
|---|
| 2546 |
|
|---|
| 2547 | # Because octlong overrides __add__, we can't check the absence of +0
|
|---|
| 2548 | # optimizations using octlong.
|
|---|
| 2549 | class longclone(long):
|
|---|
| 2550 | pass
|
|---|
| 2551 | a = longclone(1)
|
|---|
| 2552 | self.assertTrue((a + 0).__class__ is long)
|
|---|
| 2553 | self.assertTrue((0 + a).__class__ is long)
|
|---|
| 2554 |
|
|---|
| 2555 | # Check that negative clones don't segfault
|
|---|
| 2556 | a = longclone(-1)
|
|---|
| 2557 | self.assertEqual(a.__dict__, {})
|
|---|
| 2558 | self.assertEqual(long(a), -1) # self.assertTrue PyNumber_Long() copies the sign bit
|
|---|
| 2559 |
|
|---|
| 2560 | class precfloat(float):
|
|---|
| 2561 | __slots__ = ['prec']
|
|---|
| 2562 | def __init__(self, value=0.0, prec=12):
|
|---|
| 2563 | self.prec = int(prec)
|
|---|
| 2564 | def __repr__(self):
|
|---|
| 2565 | return "%.*g" % (self.prec, self)
|
|---|
| 2566 | self.assertEqual(repr(precfloat(1.1)), "1.1")
|
|---|
| 2567 | a = precfloat(12345)
|
|---|
| 2568 | self.assertEqual(a, 12345.0)
|
|---|
| 2569 | self.assertEqual(float(a), 12345.0)
|
|---|
| 2570 | self.assertTrue(float(a).__class__ is float)
|
|---|
| 2571 | self.assertEqual(hash(a), hash(12345.0))
|
|---|
| 2572 | self.assertTrue((+a).__class__ is float)
|
|---|
| 2573 |
|
|---|
| 2574 | class madcomplex(complex):
|
|---|
| 2575 | def __repr__(self):
|
|---|
| 2576 | return "%.17gj%+.17g" % (self.imag, self.real)
|
|---|
| 2577 | a = madcomplex(-3, 4)
|
|---|
| 2578 | self.assertEqual(repr(a), "4j-3")
|
|---|
| 2579 | base = complex(-3, 4)
|
|---|
| 2580 | self.assertEqual(base.__class__, complex)
|
|---|
| 2581 | self.assertEqual(a, base)
|
|---|
| 2582 | self.assertEqual(complex(a), base)
|
|---|
| 2583 | self.assertEqual(complex(a).__class__, complex)
|
|---|
| 2584 | a = madcomplex(a) # just trying another form of the constructor
|
|---|
| 2585 | self.assertEqual(repr(a), "4j-3")
|
|---|
| 2586 | self.assertEqual(a, base)
|
|---|
| 2587 | self.assertEqual(complex(a), base)
|
|---|
| 2588 | self.assertEqual(complex(a).__class__, complex)
|
|---|
| 2589 | self.assertEqual(hash(a), hash(base))
|
|---|
| 2590 | self.assertEqual((+a).__class__, complex)
|
|---|
| 2591 | self.assertEqual((a + 0).__class__, complex)
|
|---|
| 2592 | self.assertEqual(a + 0, base)
|
|---|
| 2593 | self.assertEqual((a - 0).__class__, complex)
|
|---|
| 2594 | self.assertEqual(a - 0, base)
|
|---|
| 2595 | self.assertEqual((a * 1).__class__, complex)
|
|---|
| 2596 | self.assertEqual(a * 1, base)
|
|---|
| 2597 | self.assertEqual((a / 1).__class__, complex)
|
|---|
| 2598 | self.assertEqual(a / 1, base)
|
|---|
| 2599 |
|
|---|
| 2600 | class madtuple(tuple):
|
|---|
| 2601 | _rev = None
|
|---|
| 2602 | def rev(self):
|
|---|
| 2603 | if self._rev is not None:
|
|---|
| 2604 | return self._rev
|
|---|
| 2605 | L = list(self)
|
|---|
| 2606 | L.reverse()
|
|---|
| 2607 | self._rev = self.__class__(L)
|
|---|
| 2608 | return self._rev
|
|---|
| 2609 | a = madtuple((1,2,3,4,5,6,7,8,9,0))
|
|---|
| 2610 | self.assertEqual(a, (1,2,3,4,5,6,7,8,9,0))
|
|---|
| 2611 | self.assertEqual(a.rev(), madtuple((0,9,8,7,6,5,4,3,2,1)))
|
|---|
| 2612 | self.assertEqual(a.rev().rev(), madtuple((1,2,3,4,5,6,7,8,9,0)))
|
|---|
| 2613 | for i in range(512):
|
|---|
| 2614 | t = madtuple(range(i))
|
|---|
| 2615 | u = t.rev()
|
|---|
| 2616 | v = u.rev()
|
|---|
| 2617 | self.assertEqual(v, t)
|
|---|
| 2618 | a = madtuple((1,2,3,4,5))
|
|---|
| 2619 | self.assertEqual(tuple(a), (1,2,3,4,5))
|
|---|
| 2620 | self.assertTrue(tuple(a).__class__ is tuple)
|
|---|
| 2621 | self.assertEqual(hash(a), hash((1,2,3,4,5)))
|
|---|
| 2622 | self.assertTrue(a[:].__class__ is tuple)
|
|---|
| 2623 | self.assertTrue((a * 1).__class__ is tuple)
|
|---|
| 2624 | self.assertTrue((a * 0).__class__ is tuple)
|
|---|
| 2625 | self.assertTrue((a + ()).__class__ is tuple)
|
|---|
| 2626 | a = madtuple(())
|
|---|
| 2627 | self.assertEqual(tuple(a), ())
|
|---|
| 2628 | self.assertTrue(tuple(a).__class__ is tuple)
|
|---|
| 2629 | self.assertTrue((a + a).__class__ is tuple)
|
|---|
| 2630 | self.assertTrue((a * 0).__class__ is tuple)
|
|---|
| 2631 | self.assertTrue((a * 1).__class__ is tuple)
|
|---|
| 2632 | self.assertTrue((a * 2).__class__ is tuple)
|
|---|
| 2633 | self.assertTrue(a[:].__class__ is tuple)
|
|---|
| 2634 |
|
|---|
| 2635 | class madstring(str):
|
|---|
| 2636 | _rev = None
|
|---|
| 2637 | def rev(self):
|
|---|
| 2638 | if self._rev is not None:
|
|---|
| 2639 | return self._rev
|
|---|
| 2640 | L = list(self)
|
|---|
| 2641 | L.reverse()
|
|---|
| 2642 | self._rev = self.__class__("".join(L))
|
|---|
| 2643 | return self._rev
|
|---|
| 2644 | s = madstring("abcdefghijklmnopqrstuvwxyz")
|
|---|
| 2645 | self.assertEqual(s, "abcdefghijklmnopqrstuvwxyz")
|
|---|
| 2646 | self.assertEqual(s.rev(), madstring("zyxwvutsrqponmlkjihgfedcba"))
|
|---|
| 2647 | self.assertEqual(s.rev().rev(), madstring("abcdefghijklmnopqrstuvwxyz"))
|
|---|
| 2648 | for i in range(256):
|
|---|
| 2649 | s = madstring("".join(map(chr, range(i))))
|
|---|
| 2650 | t = s.rev()
|
|---|
| 2651 | u = t.rev()
|
|---|
| 2652 | self.assertEqual(u, s)
|
|---|
| 2653 | s = madstring("12345")
|
|---|
| 2654 | self.assertEqual(str(s), "12345")
|
|---|
| 2655 | self.assertTrue(str(s).__class__ is str)
|
|---|
| 2656 |
|
|---|
| 2657 | base = "\x00" * 5
|
|---|
| 2658 | s = madstring(base)
|
|---|
| 2659 | self.assertEqual(s, base)
|
|---|
| 2660 | self.assertEqual(str(s), base)
|
|---|
| 2661 | self.assertTrue(str(s).__class__ is str)
|
|---|
| 2662 | self.assertEqual(hash(s), hash(base))
|
|---|
| 2663 | self.assertEqual({s: 1}[base], 1)
|
|---|
| 2664 | self.assertEqual({base: 1}[s], 1)
|
|---|
| 2665 | self.assertTrue((s + "").__class__ is str)
|
|---|
| 2666 | self.assertEqual(s + "", base)
|
|---|
| 2667 | self.assertTrue(("" + s).__class__ is str)
|
|---|
| 2668 | self.assertEqual("" + s, base)
|
|---|
| 2669 | self.assertTrue((s * 0).__class__ is str)
|
|---|
| 2670 | self.assertEqual(s * 0, "")
|
|---|
| 2671 | self.assertTrue((s * 1).__class__ is str)
|
|---|
| 2672 | self.assertEqual(s * 1, base)
|
|---|
| 2673 | self.assertTrue((s * 2).__class__ is str)
|
|---|
| 2674 | self.assertEqual(s * 2, base + base)
|
|---|
| 2675 | self.assertTrue(s[:].__class__ is str)
|
|---|
| 2676 | self.assertEqual(s[:], base)
|
|---|
| 2677 | self.assertTrue(s[0:0].__class__ is str)
|
|---|
| 2678 | self.assertEqual(s[0:0], "")
|
|---|
| 2679 | self.assertTrue(s.strip().__class__ is str)
|
|---|
| 2680 | self.assertEqual(s.strip(), base)
|
|---|
| 2681 | self.assertTrue(s.lstrip().__class__ is str)
|
|---|
| 2682 | self.assertEqual(s.lstrip(), base)
|
|---|
| 2683 | self.assertTrue(s.rstrip().__class__ is str)
|
|---|
| 2684 | self.assertEqual(s.rstrip(), base)
|
|---|
| 2685 | identitytab = ''.join([chr(i) for i in range(256)])
|
|---|
| 2686 | self.assertTrue(s.translate(identitytab).__class__ is str)
|
|---|
| 2687 | self.assertEqual(s.translate(identitytab), base)
|
|---|
| 2688 | self.assertTrue(s.translate(identitytab, "x").__class__ is str)
|
|---|
| 2689 | self.assertEqual(s.translate(identitytab, "x"), base)
|
|---|
| 2690 | self.assertEqual(s.translate(identitytab, "\x00"), "")
|
|---|
| 2691 | self.assertTrue(s.replace("x", "x").__class__ is str)
|
|---|
| 2692 | self.assertEqual(s.replace("x", "x"), base)
|
|---|
| 2693 | self.assertTrue(s.ljust(len(s)).__class__ is str)
|
|---|
| 2694 | self.assertEqual(s.ljust(len(s)), base)
|
|---|
| 2695 | self.assertTrue(s.rjust(len(s)).__class__ is str)
|
|---|
| 2696 | self.assertEqual(s.rjust(len(s)), base)
|
|---|
| 2697 | self.assertTrue(s.center(len(s)).__class__ is str)
|
|---|
| 2698 | self.assertEqual(s.center(len(s)), base)
|
|---|
| 2699 | self.assertTrue(s.lower().__class__ is str)
|
|---|
| 2700 | self.assertEqual(s.lower(), base)
|
|---|
| 2701 |
|
|---|
| 2702 | class madunicode(unicode):
|
|---|
| 2703 | _rev = None
|
|---|
| 2704 | def rev(self):
|
|---|
| 2705 | if self._rev is not None:
|
|---|
| 2706 | return self._rev
|
|---|
| 2707 | L = list(self)
|
|---|
| 2708 | L.reverse()
|
|---|
| 2709 | self._rev = self.__class__(u"".join(L))
|
|---|
| 2710 | return self._rev
|
|---|
| 2711 | u = madunicode("ABCDEF")
|
|---|
| 2712 | self.assertEqual(u, u"ABCDEF")
|
|---|
| 2713 | self.assertEqual(u.rev(), madunicode(u"FEDCBA"))
|
|---|
| 2714 | self.assertEqual(u.rev().rev(), madunicode(u"ABCDEF"))
|
|---|
| 2715 | base = u"12345"
|
|---|
| 2716 | u = madunicode(base)
|
|---|
| 2717 | self.assertEqual(unicode(u), base)
|
|---|
| 2718 | self.assertTrue(unicode(u).__class__ is unicode)
|
|---|
| 2719 | self.assertEqual(hash(u), hash(base))
|
|---|
| 2720 | self.assertEqual({u: 1}[base], 1)
|
|---|
| 2721 | self.assertEqual({base: 1}[u], 1)
|
|---|
| 2722 | self.assertTrue(u.strip().__class__ is unicode)
|
|---|
| 2723 | self.assertEqual(u.strip(), base)
|
|---|
| 2724 | self.assertTrue(u.lstrip().__class__ is unicode)
|
|---|
| 2725 | self.assertEqual(u.lstrip(), base)
|
|---|
| 2726 | self.assertTrue(u.rstrip().__class__ is unicode)
|
|---|
| 2727 | self.assertEqual(u.rstrip(), base)
|
|---|
| 2728 | self.assertTrue(u.replace(u"x", u"x").__class__ is unicode)
|
|---|
| 2729 | self.assertEqual(u.replace(u"x", u"x"), base)
|
|---|
| 2730 | self.assertTrue(u.replace(u"xy", u"xy").__class__ is unicode)
|
|---|
| 2731 | self.assertEqual(u.replace(u"xy", u"xy"), base)
|
|---|
| 2732 | self.assertTrue(u.center(len(u)).__class__ is unicode)
|
|---|
| 2733 | self.assertEqual(u.center(len(u)), base)
|
|---|
| 2734 | self.assertTrue(u.ljust(len(u)).__class__ is unicode)
|
|---|
| 2735 | self.assertEqual(u.ljust(len(u)), base)
|
|---|
| 2736 | self.assertTrue(u.rjust(len(u)).__class__ is unicode)
|
|---|
| 2737 | self.assertEqual(u.rjust(len(u)), base)
|
|---|
| 2738 | self.assertTrue(u.lower().__class__ is unicode)
|
|---|
| 2739 | self.assertEqual(u.lower(), base)
|
|---|
| 2740 | self.assertTrue(u.upper().__class__ is unicode)
|
|---|
| 2741 | self.assertEqual(u.upper(), base)
|
|---|
| 2742 | self.assertTrue(u.capitalize().__class__ is unicode)
|
|---|
| 2743 | self.assertEqual(u.capitalize(), base)
|
|---|
| 2744 | self.assertTrue(u.title().__class__ is unicode)
|
|---|
| 2745 | self.assertEqual(u.title(), base)
|
|---|
| 2746 | self.assertTrue((u + u"").__class__ is unicode)
|
|---|
| 2747 | self.assertEqual(u + u"", base)
|
|---|
| 2748 | self.assertTrue((u"" + u).__class__ is unicode)
|
|---|
| 2749 | self.assertEqual(u"" + u, base)
|
|---|
| 2750 | self.assertTrue((u * 0).__class__ is unicode)
|
|---|
| 2751 | self.assertEqual(u * 0, u"")
|
|---|
| 2752 | self.assertTrue((u * 1).__class__ is unicode)
|
|---|
| 2753 | self.assertEqual(u * 1, base)
|
|---|
| 2754 | self.assertTrue((u * 2).__class__ is unicode)
|
|---|
| 2755 | self.assertEqual(u * 2, base + base)
|
|---|
| 2756 | self.assertTrue(u[:].__class__ is unicode)
|
|---|
| 2757 | self.assertEqual(u[:], base)
|
|---|
| 2758 | self.assertTrue(u[0:0].__class__ is unicode)
|
|---|
| 2759 | self.assertEqual(u[0:0], u"")
|
|---|
| 2760 |
|
|---|
| 2761 | class sublist(list):
|
|---|
| 2762 | pass
|
|---|
| 2763 | a = sublist(range(5))
|
|---|
| 2764 | self.assertEqual(a, range(5))
|
|---|
| 2765 | a.append("hello")
|
|---|
| 2766 | self.assertEqual(a, range(5) + ["hello"])
|
|---|
| 2767 | a[5] = 5
|
|---|
| 2768 | self.assertEqual(a, range(6))
|
|---|
| 2769 | a.extend(range(6, 20))
|
|---|
| 2770 | self.assertEqual(a, range(20))
|
|---|
| 2771 | a[-5:] = []
|
|---|
| 2772 | self.assertEqual(a, range(15))
|
|---|
| 2773 | del a[10:15]
|
|---|
| 2774 | self.assertEqual(len(a), 10)
|
|---|
| 2775 | self.assertEqual(a, range(10))
|
|---|
| 2776 | self.assertEqual(list(a), range(10))
|
|---|
| 2777 | self.assertEqual(a[0], 0)
|
|---|
| 2778 | self.assertEqual(a[9], 9)
|
|---|
| 2779 | self.assertEqual(a[-10], 0)
|
|---|
| 2780 | self.assertEqual(a[-1], 9)
|
|---|
| 2781 | self.assertEqual(a[:5], range(5))
|
|---|
| 2782 |
|
|---|
| 2783 | class CountedInput(file):
|
|---|
| 2784 | """Counts lines read by self.readline().
|
|---|
| 2785 |
|
|---|
| 2786 | self.lineno is the 0-based ordinal of the last line read, up to
|
|---|
| 2787 | a maximum of one greater than the number of lines in the file.
|
|---|
| 2788 |
|
|---|
| 2789 | self.ateof is true if and only if the final "" line has been read,
|
|---|
| 2790 | at which point self.lineno stops incrementing, and further calls
|
|---|
| 2791 | to readline() continue to return "".
|
|---|
| 2792 | """
|
|---|
| 2793 |
|
|---|
| 2794 | lineno = 0
|
|---|
| 2795 | ateof = 0
|
|---|
| 2796 | def readline(self):
|
|---|
| 2797 | if self.ateof:
|
|---|
| 2798 | return ""
|
|---|
| 2799 | s = file.readline(self)
|
|---|
| 2800 | # Next line works too.
|
|---|
| 2801 | # s = super(CountedInput, self).readline()
|
|---|
| 2802 | self.lineno += 1
|
|---|
| 2803 | if s == "":
|
|---|
| 2804 | self.ateof = 1
|
|---|
| 2805 | return s
|
|---|
| 2806 |
|
|---|
| 2807 | f = file(name=test_support.TESTFN, mode='w')
|
|---|
| 2808 | lines = ['a\n', 'b\n', 'c\n']
|
|---|
| 2809 | try:
|
|---|
| 2810 | f.writelines(lines)
|
|---|
| 2811 | f.close()
|
|---|
| 2812 | f = CountedInput(test_support.TESTFN)
|
|---|
| 2813 | for (i, expected) in zip(range(1, 5) + [4], lines + 2 * [""]):
|
|---|
| 2814 | got = f.readline()
|
|---|
| 2815 | self.assertEqual(expected, got)
|
|---|
| 2816 | self.assertEqual(f.lineno, i)
|
|---|
| 2817 | self.assertEqual(f.ateof, (i > len(lines)))
|
|---|
| 2818 | f.close()
|
|---|
| 2819 | finally:
|
|---|
| 2820 | try:
|
|---|
| 2821 | f.close()
|
|---|
| 2822 | except:
|
|---|
| 2823 | pass
|
|---|
| 2824 | test_support.unlink(test_support.TESTFN)
|
|---|
| 2825 |
|
|---|
| 2826 | def test_keywords(self):
|
|---|
| 2827 | # Testing keyword args to basic type constructors ...
|
|---|
| 2828 | self.assertEqual(int(x=1), 1)
|
|---|
| 2829 | self.assertEqual(float(x=2), 2.0)
|
|---|
| 2830 | self.assertEqual(long(x=3), 3L)
|
|---|
| 2831 | self.assertEqual(complex(imag=42, real=666), complex(666, 42))
|
|---|
| 2832 | self.assertEqual(str(object=500), '500')
|
|---|
| 2833 | self.assertEqual(unicode(string='abc', errors='strict'), u'abc')
|
|---|
| 2834 | self.assertEqual(tuple(sequence=range(3)), (0, 1, 2))
|
|---|
| 2835 | self.assertEqual(list(sequence=(0, 1, 2)), range(3))
|
|---|
| 2836 | # note: as of Python 2.3, dict() no longer has an "items" keyword arg
|
|---|
| 2837 |
|
|---|
| 2838 | for constructor in (int, float, long, complex, str, unicode,
|
|---|
| 2839 | tuple, list, file):
|
|---|
| 2840 | try:
|
|---|
| 2841 | constructor(bogus_keyword_arg=1)
|
|---|
| 2842 | except TypeError:
|
|---|
| 2843 | pass
|
|---|
| 2844 | else:
|
|---|
| 2845 | self.fail("expected TypeError from bogus keyword argument to %r"
|
|---|
| 2846 | % constructor)
|
|---|
| 2847 |
|
|---|
| 2848 | def test_str_subclass_as_dict_key(self):
|
|---|
| 2849 | # Testing a str subclass used as dict key ..
|
|---|
| 2850 |
|
|---|
| 2851 | class cistr(str):
|
|---|
| 2852 | """Sublcass of str that computes __eq__ case-insensitively.
|
|---|
| 2853 |
|
|---|
| 2854 | Also computes a hash code of the string in canonical form.
|
|---|
| 2855 | """
|
|---|
| 2856 |
|
|---|
| 2857 | def __init__(self, value):
|
|---|
| 2858 | self.canonical = value.lower()
|
|---|
| 2859 | self.hashcode = hash(self.canonical)
|
|---|
| 2860 |
|
|---|
| 2861 | def __eq__(self, other):
|
|---|
| 2862 | if not isinstance(other, cistr):
|
|---|
| 2863 | other = cistr(other)
|
|---|
| 2864 | return self.canonical == other.canonical
|
|---|
| 2865 |
|
|---|
| 2866 | def __hash__(self):
|
|---|
| 2867 | return self.hashcode
|
|---|
| 2868 |
|
|---|
| 2869 | self.assertEqual(cistr('ABC'), 'abc')
|
|---|
| 2870 | self.assertEqual('aBc', cistr('ABC'))
|
|---|
| 2871 | self.assertEqual(str(cistr('ABC')), 'ABC')
|
|---|
| 2872 |
|
|---|
| 2873 | d = {cistr('one'): 1, cistr('two'): 2, cistr('tHree'): 3}
|
|---|
| 2874 | self.assertEqual(d[cistr('one')], 1)
|
|---|
| 2875 | self.assertEqual(d[cistr('tWo')], 2)
|
|---|
| 2876 | self.assertEqual(d[cistr('THrEE')], 3)
|
|---|
| 2877 | self.assertIn(cistr('ONe'), d)
|
|---|
| 2878 | self.assertEqual(d.get(cistr('thrEE')), 3)
|
|---|
| 2879 |
|
|---|
| 2880 | def test_classic_comparisons(self):
|
|---|
| 2881 | # Testing classic comparisons...
|
|---|
| 2882 | class classic:
|
|---|
| 2883 | pass
|
|---|
| 2884 |
|
|---|
| 2885 | for base in (classic, int, object):
|
|---|
| 2886 | class C(base):
|
|---|
| 2887 | def __init__(self, value):
|
|---|
| 2888 | self.value = int(value)
|
|---|
| 2889 | def __cmp__(self, other):
|
|---|
| 2890 | if isinstance(other, C):
|
|---|
| 2891 | return cmp(self.value, other.value)
|
|---|
| 2892 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2893 | return cmp(self.value, other)
|
|---|
| 2894 | return NotImplemented
|
|---|
| 2895 | __hash__ = None # Silence Py3k warning
|
|---|
| 2896 |
|
|---|
| 2897 | c1 = C(1)
|
|---|
| 2898 | c2 = C(2)
|
|---|
| 2899 | c3 = C(3)
|
|---|
| 2900 | self.assertEqual(c1, 1)
|
|---|
| 2901 | c = {1: c1, 2: c2, 3: c3}
|
|---|
| 2902 | for x in 1, 2, 3:
|
|---|
| 2903 | for y in 1, 2, 3:
|
|---|
| 2904 | self.assertTrue(cmp(c[x], c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
|
|---|
| 2905 | for op in "<", "<=", "==", "!=", ">", ">=":
|
|---|
| 2906 | self.assertTrue(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
|
|---|
| 2907 | "x=%d, y=%d" % (x, y))
|
|---|
| 2908 | self.assertTrue(cmp(c[x], y) == cmp(x, y), "x=%d, y=%d" % (x, y))
|
|---|
| 2909 | self.assertTrue(cmp(x, c[y]) == cmp(x, y), "x=%d, y=%d" % (x, y))
|
|---|
| 2910 |
|
|---|
| 2911 | def test_rich_comparisons(self):
|
|---|
| 2912 | # Testing rich comparisons...
|
|---|
| 2913 | class Z(complex):
|
|---|
| 2914 | pass
|
|---|
| 2915 | z = Z(1)
|
|---|
| 2916 | self.assertEqual(z, 1+0j)
|
|---|
| 2917 | self.assertEqual(1+0j, z)
|
|---|
| 2918 | class ZZ(complex):
|
|---|
| 2919 | def __eq__(self, other):
|
|---|
| 2920 | try:
|
|---|
| 2921 | return abs(self - other) <= 1e-6
|
|---|
| 2922 | except:
|
|---|
| 2923 | return NotImplemented
|
|---|
| 2924 | __hash__ = None # Silence Py3k warning
|
|---|
| 2925 | zz = ZZ(1.0000003)
|
|---|
| 2926 | self.assertEqual(zz, 1+0j)
|
|---|
| 2927 | self.assertEqual(1+0j, zz)
|
|---|
| 2928 |
|
|---|
| 2929 | class classic:
|
|---|
| 2930 | pass
|
|---|
| 2931 | for base in (classic, int, object, list):
|
|---|
| 2932 | class C(base):
|
|---|
| 2933 | def __init__(self, value):
|
|---|
| 2934 | self.value = int(value)
|
|---|
| 2935 | def __cmp__(self_, other):
|
|---|
| 2936 | self.fail("shouldn't call __cmp__")
|
|---|
| 2937 | __hash__ = None # Silence Py3k warning
|
|---|
| 2938 | def __eq__(self, other):
|
|---|
| 2939 | if isinstance(other, C):
|
|---|
| 2940 | return self.value == other.value
|
|---|
| 2941 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2942 | return self.value == other
|
|---|
| 2943 | return NotImplemented
|
|---|
| 2944 | def __ne__(self, other):
|
|---|
| 2945 | if isinstance(other, C):
|
|---|
| 2946 | return self.value != other.value
|
|---|
| 2947 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2948 | return self.value != other
|
|---|
| 2949 | return NotImplemented
|
|---|
| 2950 | def __lt__(self, other):
|
|---|
| 2951 | if isinstance(other, C):
|
|---|
| 2952 | return self.value < other.value
|
|---|
| 2953 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2954 | return self.value < other
|
|---|
| 2955 | return NotImplemented
|
|---|
| 2956 | def __le__(self, other):
|
|---|
| 2957 | if isinstance(other, C):
|
|---|
| 2958 | return self.value <= other.value
|
|---|
| 2959 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2960 | return self.value <= other
|
|---|
| 2961 | return NotImplemented
|
|---|
| 2962 | def __gt__(self, other):
|
|---|
| 2963 | if isinstance(other, C):
|
|---|
| 2964 | return self.value > other.value
|
|---|
| 2965 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2966 | return self.value > other
|
|---|
| 2967 | return NotImplemented
|
|---|
| 2968 | def __ge__(self, other):
|
|---|
| 2969 | if isinstance(other, C):
|
|---|
| 2970 | return self.value >= other.value
|
|---|
| 2971 | if isinstance(other, int) or isinstance(other, long):
|
|---|
| 2972 | return self.value >= other
|
|---|
| 2973 | return NotImplemented
|
|---|
| 2974 | c1 = C(1)
|
|---|
| 2975 | c2 = C(2)
|
|---|
| 2976 | c3 = C(3)
|
|---|
| 2977 | self.assertEqual(c1, 1)
|
|---|
| 2978 | c = {1: c1, 2: c2, 3: c3}
|
|---|
| 2979 | for x in 1, 2, 3:
|
|---|
| 2980 | for y in 1, 2, 3:
|
|---|
| 2981 | for op in "<", "<=", "==", "!=", ">", ">=":
|
|---|
| 2982 | self.assertTrue(eval("c[x] %s c[y]" % op) == eval("x %s y" % op),
|
|---|
| 2983 | "x=%d, y=%d" % (x, y))
|
|---|
| 2984 | self.assertTrue(eval("c[x] %s y" % op) == eval("x %s y" % op),
|
|---|
| 2985 | "x=%d, y=%d" % (x, y))
|
|---|
| 2986 | self.assertTrue(eval("x %s c[y]" % op) == eval("x %s y" % op),
|
|---|
| 2987 | "x=%d, y=%d" % (x, y))
|
|---|
| 2988 |
|
|---|
| 2989 | def test_coercions(self):
|
|---|
| 2990 | # Testing coercions...
|
|---|
| 2991 | class I(int): pass
|
|---|
| 2992 | coerce(I(0), 0)
|
|---|
| 2993 | coerce(0, I(0))
|
|---|
| 2994 | class L(long): pass
|
|---|
| 2995 | coerce(L(0), 0)
|
|---|
| 2996 | coerce(L(0), 0L)
|
|---|
| 2997 | coerce(0, L(0))
|
|---|
| 2998 | coerce(0L, L(0))
|
|---|
| 2999 | class F(float): pass
|
|---|
| 3000 | coerce(F(0), 0)
|
|---|
| 3001 | coerce(F(0), 0L)
|
|---|
| 3002 | coerce(F(0), 0.)
|
|---|
| 3003 | coerce(0, F(0))
|
|---|
| 3004 | coerce(0L, F(0))
|
|---|
| 3005 | coerce(0., F(0))
|
|---|
| 3006 | class C(complex): pass
|
|---|
| 3007 | coerce(C(0), 0)
|
|---|
| 3008 | coerce(C(0), 0L)
|
|---|
| 3009 | coerce(C(0), 0.)
|
|---|
| 3010 | coerce(C(0), 0j)
|
|---|
| 3011 | coerce(0, C(0))
|
|---|
| 3012 | coerce(0L, C(0))
|
|---|
| 3013 | coerce(0., C(0))
|
|---|
| 3014 | coerce(0j, C(0))
|
|---|
| 3015 |
|
|---|
| 3016 | def test_descrdoc(self):
|
|---|
| 3017 | # Testing descriptor doc strings...
|
|---|
| 3018 | def check(descr, what):
|
|---|
| 3019 | self.assertEqual(descr.__doc__, what)
|
|---|
| 3020 | check(file.closed, "True if the file is closed") # getset descriptor
|
|---|
| 3021 | check(file.name, "file name") # member descriptor
|
|---|
| 3022 |
|
|---|
| 3023 | def test_doc_descriptor(self):
|
|---|
| 3024 | # Testing __doc__ descriptor...
|
|---|
| 3025 | # SF bug 542984
|
|---|
| 3026 | class DocDescr(object):
|
|---|
| 3027 | def __get__(self, object, otype):
|
|---|
| 3028 | if object:
|
|---|
| 3029 | object = object.__class__.__name__ + ' instance'
|
|---|
| 3030 | if otype:
|
|---|
| 3031 | otype = otype.__name__
|
|---|
| 3032 | return 'object=%s; type=%s' % (object, otype)
|
|---|
| 3033 | class OldClass:
|
|---|
| 3034 | __doc__ = DocDescr()
|
|---|
| 3035 | class NewClass(object):
|
|---|
| 3036 | __doc__ = DocDescr()
|
|---|
| 3037 | self.assertEqual(OldClass.__doc__, 'object=None; type=OldClass')
|
|---|
| 3038 | self.assertEqual(OldClass().__doc__, 'object=OldClass instance; type=OldClass')
|
|---|
| 3039 | self.assertEqual(NewClass.__doc__, 'object=None; type=NewClass')
|
|---|
| 3040 | self.assertEqual(NewClass().__doc__, 'object=NewClass instance; type=NewClass')
|
|---|
| 3041 |
|
|---|
| 3042 | def test_set_class(self):
|
|---|
| 3043 | # Testing __class__ assignment...
|
|---|
| 3044 | class C(object): pass
|
|---|
| 3045 | class D(object): pass
|
|---|
| 3046 | class E(object): pass
|
|---|
| 3047 | class F(D, E): pass
|
|---|
| 3048 | for cls in C, D, E, F:
|
|---|
| 3049 | for cls2 in C, D, E, F:
|
|---|
| 3050 | x = cls()
|
|---|
| 3051 | x.__class__ = cls2
|
|---|
| 3052 | self.assertTrue(x.__class__ is cls2)
|
|---|
| 3053 | x.__class__ = cls
|
|---|
| 3054 | self.assertTrue(x.__class__ is cls)
|
|---|
| 3055 | def cant(x, C):
|
|---|
| 3056 | try:
|
|---|
| 3057 | x.__class__ = C
|
|---|
| 3058 | except TypeError:
|
|---|
| 3059 | pass
|
|---|
| 3060 | else:
|
|---|
| 3061 | self.fail("shouldn't allow %r.__class__ = %r" % (x, C))
|
|---|
| 3062 | try:
|
|---|
| 3063 | delattr(x, "__class__")
|
|---|
| 3064 | except (TypeError, AttributeError):
|
|---|
| 3065 | pass
|
|---|
| 3066 | else:
|
|---|
| 3067 | self.fail("shouldn't allow del %r.__class__" % x)
|
|---|
| 3068 | cant(C(), list)
|
|---|
| 3069 | cant(list(), C)
|
|---|
| 3070 | cant(C(), 1)
|
|---|
| 3071 | cant(C(), object)
|
|---|
| 3072 | cant(object(), list)
|
|---|
| 3073 | cant(list(), object)
|
|---|
| 3074 | class Int(int): __slots__ = []
|
|---|
| 3075 | cant(2, Int)
|
|---|
| 3076 | cant(Int(), int)
|
|---|
| 3077 | cant(True, int)
|
|---|
| 3078 | cant(2, bool)
|
|---|
| 3079 | o = object()
|
|---|
| 3080 | cant(o, type(1))
|
|---|
| 3081 | cant(o, type(None))
|
|---|
| 3082 | del o
|
|---|
| 3083 | class G(object):
|
|---|
| 3084 | __slots__ = ["a", "b"]
|
|---|
| 3085 | class H(object):
|
|---|
| 3086 | __slots__ = ["b", "a"]
|
|---|
| 3087 | try:
|
|---|
| 3088 | unicode
|
|---|
| 3089 | except NameError:
|
|---|
| 3090 | class I(object):
|
|---|
| 3091 | __slots__ = ["a", "b"]
|
|---|
| 3092 | else:
|
|---|
| 3093 | class I(object):
|
|---|
| 3094 | __slots__ = [unicode("a"), unicode("b")]
|
|---|
| 3095 | class J(object):
|
|---|
| 3096 | __slots__ = ["c", "b"]
|
|---|
| 3097 | class K(object):
|
|---|
| 3098 | __slots__ = ["a", "b", "d"]
|
|---|
| 3099 | class L(H):
|
|---|
| 3100 | __slots__ = ["e"]
|
|---|
| 3101 | class M(I):
|
|---|
| 3102 | __slots__ = ["e"]
|
|---|
| 3103 | class N(J):
|
|---|
| 3104 | __slots__ = ["__weakref__"]
|
|---|
| 3105 | class P(J):
|
|---|
| 3106 | __slots__ = ["__dict__"]
|
|---|
| 3107 | class Q(J):
|
|---|
| 3108 | pass
|
|---|
| 3109 | class R(J):
|
|---|
| 3110 | __slots__ = ["__dict__", "__weakref__"]
|
|---|
| 3111 |
|
|---|
| 3112 | for cls, cls2 in ((G, H), (G, I), (I, H), (Q, R), (R, Q)):
|
|---|
| 3113 | x = cls()
|
|---|
| 3114 | x.a = 1
|
|---|
| 3115 | x.__class__ = cls2
|
|---|
| 3116 | self.assertTrue(x.__class__ is cls2,
|
|---|
| 3117 | "assigning %r as __class__ for %r silently failed" % (cls2, x))
|
|---|
| 3118 | self.assertEqual(x.a, 1)
|
|---|
| 3119 | x.__class__ = cls
|
|---|
| 3120 | self.assertTrue(x.__class__ is cls,
|
|---|
| 3121 | "assigning %r as __class__ for %r silently failed" % (cls, x))
|
|---|
| 3122 | self.assertEqual(x.a, 1)
|
|---|
| 3123 | for cls in G, J, K, L, M, N, P, R, list, Int:
|
|---|
| 3124 | for cls2 in G, J, K, L, M, N, P, R, list, Int:
|
|---|
| 3125 | if cls is cls2:
|
|---|
| 3126 | continue
|
|---|
| 3127 | cant(cls(), cls2)
|
|---|
| 3128 |
|
|---|
| 3129 | # Issue5283: when __class__ changes in __del__, the wrong
|
|---|
| 3130 | # type gets DECREF'd.
|
|---|
| 3131 | class O(object):
|
|---|
| 3132 | pass
|
|---|
| 3133 | class A(object):
|
|---|
| 3134 | def __del__(self):
|
|---|
| 3135 | self.__class__ = O
|
|---|
| 3136 | l = [A() for x in range(100)]
|
|---|
| 3137 | del l
|
|---|
| 3138 |
|
|---|
| 3139 | def test_set_dict(self):
|
|---|
| 3140 | # Testing __dict__ assignment...
|
|---|
| 3141 | class C(object): pass
|
|---|
| 3142 | a = C()
|
|---|
| 3143 | a.__dict__ = {'b': 1}
|
|---|
| 3144 | self.assertEqual(a.b, 1)
|
|---|
| 3145 | def cant(x, dict):
|
|---|
| 3146 | try:
|
|---|
| 3147 | x.__dict__ = dict
|
|---|
| 3148 | except (AttributeError, TypeError):
|
|---|
| 3149 | pass
|
|---|
| 3150 | else:
|
|---|
| 3151 | self.fail("shouldn't allow %r.__dict__ = %r" % (x, dict))
|
|---|
| 3152 | cant(a, None)
|
|---|
| 3153 | cant(a, [])
|
|---|
| 3154 | cant(a, 1)
|
|---|
| 3155 | del a.__dict__ # Deleting __dict__ is allowed
|
|---|
| 3156 |
|
|---|
| 3157 | class Base(object):
|
|---|
| 3158 | pass
|
|---|
| 3159 | def verify_dict_readonly(x):
|
|---|
| 3160 | """
|
|---|
| 3161 | x has to be an instance of a class inheriting from Base.
|
|---|
| 3162 | """
|
|---|
| 3163 | cant(x, {})
|
|---|
| 3164 | try:
|
|---|
| 3165 | del x.__dict__
|
|---|
| 3166 | except (AttributeError, TypeError):
|
|---|
| 3167 | pass
|
|---|
| 3168 | else:
|
|---|
| 3169 | self.fail("shouldn't allow del %r.__dict__" % x)
|
|---|
| 3170 | dict_descr = Base.__dict__["__dict__"]
|
|---|
| 3171 | try:
|
|---|
| 3172 | dict_descr.__set__(x, {})
|
|---|
| 3173 | except (AttributeError, TypeError):
|
|---|
| 3174 | pass
|
|---|
| 3175 | else:
|
|---|
| 3176 | self.fail("dict_descr allowed access to %r's dict" % x)
|
|---|
| 3177 |
|
|---|
| 3178 | # Classes don't allow __dict__ assignment and have readonly dicts
|
|---|
| 3179 | class Meta1(type, Base):
|
|---|
| 3180 | pass
|
|---|
| 3181 | class Meta2(Base, type):
|
|---|
| 3182 | pass
|
|---|
| 3183 | class D(object):
|
|---|
| 3184 | __metaclass__ = Meta1
|
|---|
| 3185 | class E(object):
|
|---|
| 3186 | __metaclass__ = Meta2
|
|---|
| 3187 | for cls in C, D, E:
|
|---|
| 3188 | verify_dict_readonly(cls)
|
|---|
| 3189 | class_dict = cls.__dict__
|
|---|
| 3190 | try:
|
|---|
| 3191 | class_dict["spam"] = "eggs"
|
|---|
| 3192 | except TypeError:
|
|---|
| 3193 | pass
|
|---|
| 3194 | else:
|
|---|
| 3195 | self.fail("%r's __dict__ can be modified" % cls)
|
|---|
| 3196 |
|
|---|
| 3197 | # Modules also disallow __dict__ assignment
|
|---|
| 3198 | class Module1(types.ModuleType, Base):
|
|---|
| 3199 | pass
|
|---|
| 3200 | class Module2(Base, types.ModuleType):
|
|---|
| 3201 | pass
|
|---|
| 3202 | for ModuleType in Module1, Module2:
|
|---|
| 3203 | mod = ModuleType("spam")
|
|---|
| 3204 | verify_dict_readonly(mod)
|
|---|
| 3205 | mod.__dict__["spam"] = "eggs"
|
|---|
| 3206 |
|
|---|
| 3207 | # Exception's __dict__ can be replaced, but not deleted
|
|---|
| 3208 | # (at least not any more than regular exception's __dict__ can
|
|---|
| 3209 | # be deleted; on CPython it is not the case, whereas on PyPy they
|
|---|
| 3210 | # can, just like any other new-style instance's __dict__.)
|
|---|
| 3211 | def can_delete_dict(e):
|
|---|
| 3212 | try:
|
|---|
| 3213 | del e.__dict__
|
|---|
| 3214 | except (TypeError, AttributeError):
|
|---|
| 3215 | return False
|
|---|
| 3216 | else:
|
|---|
| 3217 | return True
|
|---|
| 3218 | class Exception1(Exception, Base):
|
|---|
| 3219 | pass
|
|---|
| 3220 | class Exception2(Base, Exception):
|
|---|
| 3221 | pass
|
|---|
| 3222 | for ExceptionType in Exception, Exception1, Exception2:
|
|---|
| 3223 | e = ExceptionType()
|
|---|
| 3224 | e.__dict__ = {"a": 1}
|
|---|
| 3225 | self.assertEqual(e.a, 1)
|
|---|
| 3226 | self.assertEqual(can_delete_dict(e), can_delete_dict(ValueError()))
|
|---|
| 3227 |
|
|---|
| 3228 | def test_pickles(self):
|
|---|
| 3229 | # Testing pickling and copying new-style classes and objects...
|
|---|
| 3230 | import pickle, cPickle
|
|---|
| 3231 |
|
|---|
| 3232 | def sorteditems(d):
|
|---|
| 3233 | L = d.items()
|
|---|
| 3234 | L.sort()
|
|---|
| 3235 | return L
|
|---|
| 3236 |
|
|---|
| 3237 | global C
|
|---|
| 3238 | class C(object):
|
|---|
| 3239 | def __init__(self, a, b):
|
|---|
| 3240 | super(C, self).__init__()
|
|---|
| 3241 | self.a = a
|
|---|
| 3242 | self.b = b
|
|---|
| 3243 | def __repr__(self):
|
|---|
| 3244 | return "C(%r, %r)" % (self.a, self.b)
|
|---|
| 3245 |
|
|---|
| 3246 | global C1
|
|---|
| 3247 | class C1(list):
|
|---|
| 3248 | def __new__(cls, a, b):
|
|---|
| 3249 | return super(C1, cls).__new__(cls)
|
|---|
| 3250 | def __getnewargs__(self):
|
|---|
| 3251 | return (self.a, self.b)
|
|---|
| 3252 | def __init__(self, a, b):
|
|---|
| 3253 | self.a = a
|
|---|
| 3254 | self.b = b
|
|---|
| 3255 | def __repr__(self):
|
|---|
| 3256 | return "C1(%r, %r)<%r>" % (self.a, self.b, list(self))
|
|---|
| 3257 |
|
|---|
| 3258 | global C2
|
|---|
| 3259 | class C2(int):
|
|---|
| 3260 | def __new__(cls, a, b, val=0):
|
|---|
| 3261 | return super(C2, cls).__new__(cls, val)
|
|---|
| 3262 | def __getnewargs__(self):
|
|---|
| 3263 | return (self.a, self.b, int(self))
|
|---|
| 3264 | def __init__(self, a, b, val=0):
|
|---|
| 3265 | self.a = a
|
|---|
| 3266 | self.b = b
|
|---|
| 3267 | def __repr__(self):
|
|---|
| 3268 | return "C2(%r, %r)<%r>" % (self.a, self.b, int(self))
|
|---|
| 3269 |
|
|---|
| 3270 | global C3
|
|---|
| 3271 | class C3(object):
|
|---|
| 3272 | def __init__(self, foo):
|
|---|
| 3273 | self.foo = foo
|
|---|
| 3274 | def __getstate__(self):
|
|---|
| 3275 | return self.foo
|
|---|
| 3276 | def __setstate__(self, foo):
|
|---|
| 3277 | self.foo = foo
|
|---|
| 3278 |
|
|---|
| 3279 | global C4classic, C4
|
|---|
| 3280 | class C4classic: # classic
|
|---|
| 3281 | pass
|
|---|
| 3282 | class C4(C4classic, object): # mixed inheritance
|
|---|
| 3283 | pass
|
|---|
| 3284 |
|
|---|
| 3285 | for p in pickle, cPickle:
|
|---|
| 3286 | for bin in 0, 1:
|
|---|
| 3287 | for cls in C, C1, C2:
|
|---|
| 3288 | s = p.dumps(cls, bin)
|
|---|
| 3289 | cls2 = p.loads(s)
|
|---|
| 3290 | self.assertTrue(cls2 is cls)
|
|---|
| 3291 |
|
|---|
| 3292 | a = C1(1, 2); a.append(42); a.append(24)
|
|---|
| 3293 | b = C2("hello", "world", 42)
|
|---|
| 3294 | s = p.dumps((a, b), bin)
|
|---|
| 3295 | x, y = p.loads(s)
|
|---|
| 3296 | self.assertEqual(x.__class__, a.__class__)
|
|---|
| 3297 | self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
|
|---|
| 3298 | self.assertEqual(y.__class__, b.__class__)
|
|---|
| 3299 | self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
|
|---|
| 3300 | self.assertEqual(repr(x), repr(a))
|
|---|
| 3301 | self.assertEqual(repr(y), repr(b))
|
|---|
| 3302 | # Test for __getstate__ and __setstate__ on new style class
|
|---|
| 3303 | u = C3(42)
|
|---|
| 3304 | s = p.dumps(u, bin)
|
|---|
| 3305 | v = p.loads(s)
|
|---|
| 3306 | self.assertEqual(u.__class__, v.__class__)
|
|---|
| 3307 | self.assertEqual(u.foo, v.foo)
|
|---|
| 3308 | # Test for picklability of hybrid class
|
|---|
| 3309 | u = C4()
|
|---|
| 3310 | u.foo = 42
|
|---|
| 3311 | s = p.dumps(u, bin)
|
|---|
| 3312 | v = p.loads(s)
|
|---|
| 3313 | self.assertEqual(u.__class__, v.__class__)
|
|---|
| 3314 | self.assertEqual(u.foo, v.foo)
|
|---|
| 3315 |
|
|---|
| 3316 | # Testing copy.deepcopy()
|
|---|
| 3317 | import copy
|
|---|
| 3318 | for cls in C, C1, C2:
|
|---|
| 3319 | cls2 = copy.deepcopy(cls)
|
|---|
| 3320 | self.assertTrue(cls2 is cls)
|
|---|
| 3321 |
|
|---|
| 3322 | a = C1(1, 2); a.append(42); a.append(24)
|
|---|
| 3323 | b = C2("hello", "world", 42)
|
|---|
| 3324 | x, y = copy.deepcopy((a, b))
|
|---|
| 3325 | self.assertEqual(x.__class__, a.__class__)
|
|---|
| 3326 | self.assertEqual(sorteditems(x.__dict__), sorteditems(a.__dict__))
|
|---|
| 3327 | self.assertEqual(y.__class__, b.__class__)
|
|---|
| 3328 | self.assertEqual(sorteditems(y.__dict__), sorteditems(b.__dict__))
|
|---|
| 3329 | self.assertEqual(repr(x), repr(a))
|
|---|
| 3330 | self.assertEqual(repr(y), repr(b))
|
|---|
| 3331 |
|
|---|
| 3332 | def test_pickle_slots(self):
|
|---|
| 3333 | # Testing pickling of classes with __slots__ ...
|
|---|
| 3334 | import pickle, cPickle
|
|---|
| 3335 | # Pickling of classes with __slots__ but without __getstate__ should fail
|
|---|
| 3336 | global B, C, D, E
|
|---|
| 3337 | class B(object):
|
|---|
| 3338 | pass
|
|---|
| 3339 | for base in [object, B]:
|
|---|
| 3340 | class C(base):
|
|---|
| 3341 | __slots__ = ['a']
|
|---|
| 3342 | class D(C):
|
|---|
| 3343 | pass
|
|---|
| 3344 | try:
|
|---|
| 3345 | pickle.dumps(C())
|
|---|
| 3346 | except TypeError:
|
|---|
| 3347 | pass
|
|---|
| 3348 | else:
|
|---|
| 3349 | self.fail("should fail: pickle C instance - %s" % base)
|
|---|
| 3350 | try:
|
|---|
| 3351 | cPickle.dumps(C())
|
|---|
| 3352 | except TypeError:
|
|---|
| 3353 | pass
|
|---|
| 3354 | else:
|
|---|
| 3355 | self.fail("should fail: cPickle C instance - %s" % base)
|
|---|
| 3356 | try:
|
|---|
| 3357 | pickle.dumps(C())
|
|---|
| 3358 | except TypeError:
|
|---|
| 3359 | pass
|
|---|
| 3360 | else:
|
|---|
| 3361 | self.fail("should fail: pickle D instance - %s" % base)
|
|---|
| 3362 | try:
|
|---|
| 3363 | cPickle.dumps(D())
|
|---|
| 3364 | except TypeError:
|
|---|
| 3365 | pass
|
|---|
| 3366 | else:
|
|---|
| 3367 | self.fail("should fail: cPickle D instance - %s" % base)
|
|---|
| 3368 | # Give C a nice generic __getstate__ and __setstate__
|
|---|
| 3369 | class C(base):
|
|---|
| 3370 | __slots__ = ['a']
|
|---|
| 3371 | def __getstate__(self):
|
|---|
| 3372 | try:
|
|---|
| 3373 | d = self.__dict__.copy()
|
|---|
| 3374 | except AttributeError:
|
|---|
| 3375 | d = {}
|
|---|
| 3376 | for cls in self.__class__.__mro__:
|
|---|
| 3377 | for sn in cls.__dict__.get('__slots__', ()):
|
|---|
| 3378 | try:
|
|---|
| 3379 | d[sn] = getattr(self, sn)
|
|---|
| 3380 | except AttributeError:
|
|---|
| 3381 | pass
|
|---|
| 3382 | return d
|
|---|
| 3383 | def __setstate__(self, d):
|
|---|
| 3384 | for k, v in d.items():
|
|---|
| 3385 | setattr(self, k, v)
|
|---|
| 3386 | class D(C):
|
|---|
| 3387 | pass
|
|---|
| 3388 | # Now it should work
|
|---|
| 3389 | x = C()
|
|---|
| 3390 | y = pickle.loads(pickle.dumps(x))
|
|---|
| 3391 | self.assertEqual(hasattr(y, 'a'), 0)
|
|---|
| 3392 | y = cPickle.loads(cPickle.dumps(x))
|
|---|
| 3393 | self.assertEqual(hasattr(y, 'a'), 0)
|
|---|
| 3394 | x.a = 42
|
|---|
| 3395 | y = pickle.loads(pickle.dumps(x))
|
|---|
| 3396 | self.assertEqual(y.a, 42)
|
|---|
| 3397 | y = cPickle.loads(cPickle.dumps(x))
|
|---|
| 3398 | self.assertEqual(y.a, 42)
|
|---|
| 3399 | x = D()
|
|---|
| 3400 | x.a = 42
|
|---|
| 3401 | x.b = 100
|
|---|
| 3402 | y = pickle.loads(pickle.dumps(x))
|
|---|
| 3403 | self.assertEqual(y.a + y.b, 142)
|
|---|
| 3404 | y = cPickle.loads(cPickle.dumps(x))
|
|---|
| 3405 | self.assertEqual(y.a + y.b, 142)
|
|---|
| 3406 | # A subclass that adds a slot should also work
|
|---|
| 3407 | class E(C):
|
|---|
| 3408 | __slots__ = ['b']
|
|---|
| 3409 | x = E()
|
|---|
| 3410 | x.a = 42
|
|---|
| 3411 | x.b = "foo"
|
|---|
| 3412 | y = pickle.loads(pickle.dumps(x))
|
|---|
| 3413 | self.assertEqual(y.a, x.a)
|
|---|
| 3414 | self.assertEqual(y.b, x.b)
|
|---|
| 3415 | y = cPickle.loads(cPickle.dumps(x))
|
|---|
| 3416 | self.assertEqual(y.a, x.a)
|
|---|
| 3417 | self.assertEqual(y.b, x.b)
|
|---|
| 3418 |
|
|---|
| 3419 | def test_binary_operator_override(self):
|
|---|
| 3420 | # Testing overrides of binary operations...
|
|---|
| 3421 | class I(int):
|
|---|
| 3422 | def __repr__(self):
|
|---|
| 3423 | return "I(%r)" % int(self)
|
|---|
| 3424 | def __add__(self, other):
|
|---|
| 3425 | return I(int(self) + int(other))
|
|---|
| 3426 | __radd__ = __add__
|
|---|
| 3427 | def __pow__(self, other, mod=None):
|
|---|
| 3428 | if mod is None:
|
|---|
| 3429 | return I(pow(int(self), int(other)))
|
|---|
| 3430 | else:
|
|---|
| 3431 | return I(pow(int(self), int(other), int(mod)))
|
|---|
| 3432 | def __rpow__(self, other, mod=None):
|
|---|
| 3433 | if mod is None:
|
|---|
| 3434 | return I(pow(int(other), int(self), mod))
|
|---|
| 3435 | else:
|
|---|
| 3436 | return I(pow(int(other), int(self), int(mod)))
|
|---|
| 3437 |
|
|---|
| 3438 | self.assertEqual(repr(I(1) + I(2)), "I(3)")
|
|---|
| 3439 | self.assertEqual(repr(I(1) + 2), "I(3)")
|
|---|
| 3440 | self.assertEqual(repr(1 + I(2)), "I(3)")
|
|---|
| 3441 | self.assertEqual(repr(I(2) ** I(3)), "I(8)")
|
|---|
| 3442 | self.assertEqual(repr(2 ** I(3)), "I(8)")
|
|---|
| 3443 | self.assertEqual(repr(I(2) ** 3), "I(8)")
|
|---|
| 3444 | self.assertEqual(repr(pow(I(2), I(3), I(5))), "I(3)")
|
|---|
| 3445 | class S(str):
|
|---|
| 3446 | def __eq__(self, other):
|
|---|
| 3447 | return self.lower() == other.lower()
|
|---|
| 3448 | __hash__ = None # Silence Py3k warning
|
|---|
| 3449 |
|
|---|
| 3450 | def test_subclass_propagation(self):
|
|---|
| 3451 | # Testing propagation of slot functions to subclasses...
|
|---|
| 3452 | class A(object):
|
|---|
| 3453 | pass
|
|---|
| 3454 | class B(A):
|
|---|
| 3455 | pass
|
|---|
| 3456 | class C(A):
|
|---|
| 3457 | pass
|
|---|
| 3458 | class D(B, C):
|
|---|
| 3459 | pass
|
|---|
| 3460 | d = D()
|
|---|
| 3461 | orig_hash = hash(d) # related to id(d) in platform-dependent ways
|
|---|
| 3462 | A.__hash__ = lambda self: 42
|
|---|
| 3463 | self.assertEqual(hash(d), 42)
|
|---|
| 3464 | C.__hash__ = lambda self: 314
|
|---|
| 3465 | self.assertEqual(hash(d), 314)
|
|---|
| 3466 | B.__hash__ = lambda self: 144
|
|---|
| 3467 | self.assertEqual(hash(d), 144)
|
|---|
| 3468 | D.__hash__ = lambda self: 100
|
|---|
| 3469 | self.assertEqual(hash(d), 100)
|
|---|
| 3470 | D.__hash__ = None
|
|---|
| 3471 | self.assertRaises(TypeError, hash, d)
|
|---|
| 3472 | del D.__hash__
|
|---|
| 3473 | self.assertEqual(hash(d), 144)
|
|---|
| 3474 | B.__hash__ = None
|
|---|
| 3475 | self.assertRaises(TypeError, hash, d)
|
|---|
| 3476 | del B.__hash__
|
|---|
| 3477 | self.assertEqual(hash(d), 314)
|
|---|
| 3478 | C.__hash__ = None
|
|---|
| 3479 | self.assertRaises(TypeError, hash, d)
|
|---|
| 3480 | del C.__hash__
|
|---|
| 3481 | self.assertEqual(hash(d), 42)
|
|---|
| 3482 | A.__hash__ = None
|
|---|
| 3483 | self.assertRaises(TypeError, hash, d)
|
|---|
| 3484 | del A.__hash__
|
|---|
| 3485 | self.assertEqual(hash(d), orig_hash)
|
|---|
| 3486 | d.foo = 42
|
|---|
| 3487 | d.bar = 42
|
|---|
| 3488 | self.assertEqual(d.foo, 42)
|
|---|
| 3489 | self.assertEqual(d.bar, 42)
|
|---|
| 3490 | def __getattribute__(self, name):
|
|---|
| 3491 | if name == "foo":
|
|---|
| 3492 | return 24
|
|---|
| 3493 | return object.__getattribute__(self, name)
|
|---|
| 3494 | A.__getattribute__ = __getattribute__
|
|---|
| 3495 | self.assertEqual(d.foo, 24)
|
|---|
| 3496 | self.assertEqual(d.bar, 42)
|
|---|
| 3497 | def __getattr__(self, name):
|
|---|
| 3498 | if name in ("spam", "foo", "bar"):
|
|---|
| 3499 | return "hello"
|
|---|
| 3500 | raise AttributeError, name
|
|---|
| 3501 | B.__getattr__ = __getattr__
|
|---|
| 3502 | self.assertEqual(d.spam, "hello")
|
|---|
| 3503 | self.assertEqual(d.foo, 24)
|
|---|
| 3504 | self.assertEqual(d.bar, 42)
|
|---|
| 3505 | del A.__getattribute__
|
|---|
| 3506 | self.assertEqual(d.foo, 42)
|
|---|
| 3507 | del d.foo
|
|---|
| 3508 | self.assertEqual(d.foo, "hello")
|
|---|
| 3509 | self.assertEqual(d.bar, 42)
|
|---|
| 3510 | del B.__getattr__
|
|---|
| 3511 | try:
|
|---|
| 3512 | d.foo
|
|---|
| 3513 | except AttributeError:
|
|---|
| 3514 | pass
|
|---|
| 3515 | else:
|
|---|
| 3516 | self.fail("d.foo should be undefined now")
|
|---|
| 3517 |
|
|---|
| 3518 | # Test a nasty bug in recurse_down_subclasses()
|
|---|
| 3519 | class A(object):
|
|---|
| 3520 | pass
|
|---|
| 3521 | class B(A):
|
|---|
| 3522 | pass
|
|---|
| 3523 | del B
|
|---|
| 3524 | test_support.gc_collect()
|
|---|
| 3525 | A.__setitem__ = lambda *a: None # crash
|
|---|
| 3526 |
|
|---|
| 3527 | def test_buffer_inheritance(self):
|
|---|
| 3528 | # Testing that buffer interface is inherited ...
|
|---|
| 3529 |
|
|---|
| 3530 | import binascii
|
|---|
| 3531 | # SF bug [#470040] ParseTuple t# vs subclasses.
|
|---|
| 3532 |
|
|---|
| 3533 | class MyStr(str):
|
|---|
| 3534 | pass
|
|---|
| 3535 | base = 'abc'
|
|---|
| 3536 | m = MyStr(base)
|
|---|
| 3537 | # b2a_hex uses the buffer interface to get its argument's value, via
|
|---|
| 3538 | # PyArg_ParseTuple 't#' code.
|
|---|
| 3539 | self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
|
|---|
| 3540 |
|
|---|
| 3541 | # It's not clear that unicode will continue to support the character
|
|---|
| 3542 | # buffer interface, and this test will fail if that's taken away.
|
|---|
| 3543 | class MyUni(unicode):
|
|---|
| 3544 | pass
|
|---|
| 3545 | base = u'abc'
|
|---|
| 3546 | m = MyUni(base)
|
|---|
| 3547 | self.assertEqual(binascii.b2a_hex(m), binascii.b2a_hex(base))
|
|---|
| 3548 |
|
|---|
| 3549 | class MyInt(int):
|
|---|
| 3550 | pass
|
|---|
| 3551 | m = MyInt(42)
|
|---|
| 3552 | try:
|
|---|
| 3553 | binascii.b2a_hex(m)
|
|---|
| 3554 | self.fail('subclass of int should not have a buffer interface')
|
|---|
| 3555 | except TypeError:
|
|---|
| 3556 | pass
|
|---|
| 3557 |
|
|---|
| 3558 | def test_str_of_str_subclass(self):
|
|---|
| 3559 | # Testing __str__ defined in subclass of str ...
|
|---|
| 3560 | import binascii
|
|---|
| 3561 | import cStringIO
|
|---|
| 3562 |
|
|---|
| 3563 | class octetstring(str):
|
|---|
| 3564 | def __str__(self):
|
|---|
| 3565 | return binascii.b2a_hex(self)
|
|---|
| 3566 | def __repr__(self):
|
|---|
| 3567 | return self + " repr"
|
|---|
| 3568 |
|
|---|
| 3569 | o = octetstring('A')
|
|---|
| 3570 | self.assertEqual(type(o), octetstring)
|
|---|
| 3571 | self.assertEqual(type(str(o)), str)
|
|---|
| 3572 | self.assertEqual(type(repr(o)), str)
|
|---|
| 3573 | self.assertEqual(ord(o), 0x41)
|
|---|
| 3574 | self.assertEqual(str(o), '41')
|
|---|
| 3575 | self.assertEqual(repr(o), 'A repr')
|
|---|
| 3576 | self.assertEqual(o.__str__(), '41')
|
|---|
| 3577 | self.assertEqual(o.__repr__(), 'A repr')
|
|---|
| 3578 |
|
|---|
| 3579 | capture = cStringIO.StringIO()
|
|---|
| 3580 | # Calling str() or not exercises different internal paths.
|
|---|
| 3581 | print >> capture, o
|
|---|
| 3582 | print >> capture, str(o)
|
|---|
| 3583 | self.assertEqual(capture.getvalue(), '41\n41\n')
|
|---|
| 3584 | capture.close()
|
|---|
| 3585 |
|
|---|
| 3586 | def test_keyword_arguments(self):
|
|---|
| 3587 | # Testing keyword arguments to __init__, __call__...
|
|---|
| 3588 | def f(a): return a
|
|---|
| 3589 | self.assertEqual(f.__call__(a=42), 42)
|
|---|
| 3590 | a = []
|
|---|
| 3591 | list.__init__(a, sequence=[0, 1, 2])
|
|---|
| 3592 | self.assertEqual(a, [0, 1, 2])
|
|---|
| 3593 |
|
|---|
| 3594 | def test_recursive_call(self):
|
|---|
| 3595 | # Testing recursive __call__() by setting to instance of class...
|
|---|
| 3596 | class A(object):
|
|---|
| 3597 | pass
|
|---|
| 3598 |
|
|---|
| 3599 | A.__call__ = A()
|
|---|
| 3600 | try:
|
|---|
| 3601 | A()()
|
|---|
| 3602 | except RuntimeError:
|
|---|
| 3603 | pass
|
|---|
| 3604 | else:
|
|---|
| 3605 | self.fail("Recursion limit should have been reached for __call__()")
|
|---|
| 3606 |
|
|---|
| 3607 | def test_delete_hook(self):
|
|---|
| 3608 | # Testing __del__ hook...
|
|---|
| 3609 | log = []
|
|---|
| 3610 | class C(object):
|
|---|
| 3611 | def __del__(self):
|
|---|
| 3612 | log.append(1)
|
|---|
| 3613 | c = C()
|
|---|
| 3614 | self.assertEqual(log, [])
|
|---|
| 3615 | del c
|
|---|
| 3616 | test_support.gc_collect()
|
|---|
| 3617 | self.assertEqual(log, [1])
|
|---|
| 3618 |
|
|---|
| 3619 | class D(object): pass
|
|---|
| 3620 | d = D()
|
|---|
| 3621 | try: del d[0]
|
|---|
| 3622 | except TypeError: pass
|
|---|
| 3623 | else: self.fail("invalid del() didn't raise TypeError")
|
|---|
| 3624 |
|
|---|
| 3625 | def test_hash_inheritance(self):
|
|---|
| 3626 | # Testing hash of mutable subclasses...
|
|---|
| 3627 |
|
|---|
| 3628 | class mydict(dict):
|
|---|
| 3629 | pass
|
|---|
| 3630 | d = mydict()
|
|---|
| 3631 | try:
|
|---|
| 3632 | hash(d)
|
|---|
| 3633 | except TypeError:
|
|---|
| 3634 | pass
|
|---|
| 3635 | else:
|
|---|
| 3636 | self.fail("hash() of dict subclass should fail")
|
|---|
| 3637 |
|
|---|
| 3638 | class mylist(list):
|
|---|
| 3639 | pass
|
|---|
| 3640 | d = mylist()
|
|---|
| 3641 | try:
|
|---|
| 3642 | hash(d)
|
|---|
| 3643 | except TypeError:
|
|---|
| 3644 | pass
|
|---|
| 3645 | else:
|
|---|
| 3646 | self.fail("hash() of list subclass should fail")
|
|---|
| 3647 |
|
|---|
| 3648 | def test_str_operations(self):
|
|---|
| 3649 | try: 'a' + 5
|
|---|
| 3650 | except TypeError: pass
|
|---|
| 3651 | else: self.fail("'' + 5 doesn't raise TypeError")
|
|---|
| 3652 |
|
|---|
| 3653 | try: ''.split('')
|
|---|
| 3654 | except ValueError: pass
|
|---|
| 3655 | else: self.fail("''.split('') doesn't raise ValueError")
|
|---|
| 3656 |
|
|---|
| 3657 | try: ''.join([0])
|
|---|
| 3658 | except TypeError: pass
|
|---|
| 3659 | else: self.fail("''.join([0]) doesn't raise TypeError")
|
|---|
| 3660 |
|
|---|
| 3661 | try: ''.rindex('5')
|
|---|
| 3662 | except ValueError: pass
|
|---|
| 3663 | else: self.fail("''.rindex('5') doesn't raise ValueError")
|
|---|
| 3664 |
|
|---|
| 3665 | try: '%(n)s' % None
|
|---|
| 3666 | except TypeError: pass
|
|---|
| 3667 | else: self.fail("'%(n)s' % None doesn't raise TypeError")
|
|---|
| 3668 |
|
|---|
| 3669 | try: '%(n' % {}
|
|---|
| 3670 | except ValueError: pass
|
|---|
| 3671 | else: self.fail("'%(n' % {} '' doesn't raise ValueError")
|
|---|
| 3672 |
|
|---|
| 3673 | try: '%*s' % ('abc')
|
|---|
| 3674 | except TypeError: pass
|
|---|
| 3675 | else: self.fail("'%*s' % ('abc') doesn't raise TypeError")
|
|---|
| 3676 |
|
|---|
| 3677 | try: '%*.*s' % ('abc', 5)
|
|---|
| 3678 | except TypeError: pass
|
|---|
| 3679 | else: self.fail("'%*.*s' % ('abc', 5) doesn't raise TypeError")
|
|---|
| 3680 |
|
|---|
| 3681 | try: '%s' % (1, 2)
|
|---|
| 3682 | except TypeError: pass
|
|---|
| 3683 | else: self.fail("'%s' % (1, 2) doesn't raise TypeError")
|
|---|
| 3684 |
|
|---|
| 3685 | try: '%' % None
|
|---|
| 3686 | except ValueError: pass
|
|---|
| 3687 | else: self.fail("'%' % None doesn't raise ValueError")
|
|---|
| 3688 |
|
|---|
| 3689 | self.assertEqual('534253'.isdigit(), 1)
|
|---|
| 3690 | self.assertEqual('534253x'.isdigit(), 0)
|
|---|
| 3691 | self.assertEqual('%c' % 5, '\x05')
|
|---|
| 3692 | self.assertEqual('%c' % '5', '5')
|
|---|
| 3693 |
|
|---|
| 3694 | def test_deepcopy_recursive(self):
|
|---|
| 3695 | # Testing deepcopy of recursive objects...
|
|---|
| 3696 | class Node:
|
|---|
| 3697 | pass
|
|---|
| 3698 | a = Node()
|
|---|
| 3699 | b = Node()
|
|---|
| 3700 | a.b = b
|
|---|
| 3701 | b.a = a
|
|---|
| 3702 | z = deepcopy(a) # This blew up before
|
|---|
| 3703 |
|
|---|
| 3704 | def test_unintialized_modules(self):
|
|---|
| 3705 | # Testing uninitialized module objects...
|
|---|
| 3706 | from types import ModuleType as M
|
|---|
| 3707 | m = M.__new__(M)
|
|---|
| 3708 | str(m)
|
|---|
| 3709 | self.assertEqual(hasattr(m, "__name__"), 0)
|
|---|
| 3710 | self.assertEqual(hasattr(m, "__file__"), 0)
|
|---|
| 3711 | self.assertEqual(hasattr(m, "foo"), 0)
|
|---|
| 3712 | self.assertFalse(m.__dict__) # None or {} are both reasonable answers
|
|---|
| 3713 | m.foo = 1
|
|---|
| 3714 | self.assertEqual(m.__dict__, {"foo": 1})
|
|---|
| 3715 |
|
|---|
| 3716 | def test_funny_new(self):
|
|---|
| 3717 | # Testing __new__ returning something unexpected...
|
|---|
| 3718 | class C(object):
|
|---|
| 3719 | def __new__(cls, arg):
|
|---|
| 3720 | if isinstance(arg, str): return [1, 2, 3]
|
|---|
| 3721 | elif isinstance(arg, int): return object.__new__(D)
|
|---|
| 3722 | else: return object.__new__(cls)
|
|---|
| 3723 | class D(C):
|
|---|
| 3724 | def __init__(self, arg):
|
|---|
| 3725 | self.foo = arg
|
|---|
| 3726 | self.assertEqual(C("1"), [1, 2, 3])
|
|---|
| 3727 | self.assertEqual(D("1"), [1, 2, 3])
|
|---|
| 3728 | d = D(None)
|
|---|
| 3729 | self.assertEqual(d.foo, None)
|
|---|
| 3730 | d = C(1)
|
|---|
| 3731 | self.assertEqual(isinstance(d, D), True)
|
|---|
| 3732 | self.assertEqual(d.foo, 1)
|
|---|
| 3733 | d = D(1)
|
|---|
| 3734 | self.assertEqual(isinstance(d, D), True)
|
|---|
| 3735 | self.assertEqual(d.foo, 1)
|
|---|
| 3736 |
|
|---|
| 3737 | def test_imul_bug(self):
|
|---|
| 3738 | # Testing for __imul__ problems...
|
|---|
| 3739 | # SF bug 544647
|
|---|
| 3740 | class C(object):
|
|---|
| 3741 | def __imul__(self, other):
|
|---|
| 3742 | return (self, other)
|
|---|
| 3743 | x = C()
|
|---|
| 3744 | y = x
|
|---|
| 3745 | y *= 1.0
|
|---|
| 3746 | self.assertEqual(y, (x, 1.0))
|
|---|
| 3747 | y = x
|
|---|
| 3748 | y *= 2
|
|---|
| 3749 | self.assertEqual(y, (x, 2))
|
|---|
| 3750 | y = x
|
|---|
| 3751 | y *= 3L
|
|---|
| 3752 | self.assertEqual(y, (x, 3L))
|
|---|
| 3753 | y = x
|
|---|
| 3754 | y *= 1L<<100
|
|---|
| 3755 | self.assertEqual(y, (x, 1L<<100))
|
|---|
| 3756 | y = x
|
|---|
| 3757 | y *= None
|
|---|
| 3758 | self.assertEqual(y, (x, None))
|
|---|
| 3759 | y = x
|
|---|
| 3760 | y *= "foo"
|
|---|
| 3761 | self.assertEqual(y, (x, "foo"))
|
|---|
| 3762 |
|
|---|
| 3763 | def test_copy_setstate(self):
|
|---|
| 3764 | # Testing that copy.*copy() correctly uses __setstate__...
|
|---|
| 3765 | import copy
|
|---|
| 3766 | class C(object):
|
|---|
| 3767 | def __init__(self, foo=None):
|
|---|
| 3768 | self.foo = foo
|
|---|
| 3769 | self.__foo = foo
|
|---|
| 3770 | def setfoo(self, foo=None):
|
|---|
| 3771 | self.foo = foo
|
|---|
| 3772 | def getfoo(self):
|
|---|
| 3773 | return self.__foo
|
|---|
| 3774 | def __getstate__(self):
|
|---|
| 3775 | return [self.foo]
|
|---|
| 3776 | def __setstate__(self_, lst):
|
|---|
| 3777 | self.assertEqual(len(lst), 1)
|
|---|
| 3778 | self_.__foo = self_.foo = lst[0]
|
|---|
| 3779 | a = C(42)
|
|---|
| 3780 | a.setfoo(24)
|
|---|
| 3781 | self.assertEqual(a.foo, 24)
|
|---|
| 3782 | self.assertEqual(a.getfoo(), 42)
|
|---|
| 3783 | b = copy.copy(a)
|
|---|
| 3784 | self.assertEqual(b.foo, 24)
|
|---|
| 3785 | self.assertEqual(b.getfoo(), 24)
|
|---|
| 3786 | b = copy.deepcopy(a)
|
|---|
| 3787 | self.assertEqual(b.foo, 24)
|
|---|
| 3788 | self.assertEqual(b.getfoo(), 24)
|
|---|
| 3789 |
|
|---|
| 3790 | def test_slices(self):
|
|---|
| 3791 | # Testing cases with slices and overridden __getitem__ ...
|
|---|
| 3792 |
|
|---|
| 3793 | # Strings
|
|---|
| 3794 | self.assertEqual("hello"[:4], "hell")
|
|---|
| 3795 | self.assertEqual("hello"[slice(4)], "hell")
|
|---|
| 3796 | self.assertEqual(str.__getitem__("hello", slice(4)), "hell")
|
|---|
| 3797 | class S(str):
|
|---|
| 3798 | def __getitem__(self, x):
|
|---|
| 3799 | return str.__getitem__(self, x)
|
|---|
| 3800 | self.assertEqual(S("hello")[:4], "hell")
|
|---|
| 3801 | self.assertEqual(S("hello")[slice(4)], "hell")
|
|---|
| 3802 | self.assertEqual(S("hello").__getitem__(slice(4)), "hell")
|
|---|
| 3803 | # Tuples
|
|---|
| 3804 | self.assertEqual((1,2,3)[:2], (1,2))
|
|---|
| 3805 | self.assertEqual((1,2,3)[slice(2)], (1,2))
|
|---|
| 3806 | self.assertEqual(tuple.__getitem__((1,2,3), slice(2)), (1,2))
|
|---|
| 3807 | class T(tuple):
|
|---|
| 3808 | def __getitem__(self, x):
|
|---|
| 3809 | return tuple.__getitem__(self, x)
|
|---|
| 3810 | self.assertEqual(T((1,2,3))[:2], (1,2))
|
|---|
| 3811 | self.assertEqual(T((1,2,3))[slice(2)], (1,2))
|
|---|
| 3812 | self.assertEqual(T((1,2,3)).__getitem__(slice(2)), (1,2))
|
|---|
| 3813 | # Lists
|
|---|
| 3814 | self.assertEqual([1,2,3][:2], [1,2])
|
|---|
| 3815 | self.assertEqual([1,2,3][slice(2)], [1,2])
|
|---|
| 3816 | self.assertEqual(list.__getitem__([1,2,3], slice(2)), [1,2])
|
|---|
| 3817 | class L(list):
|
|---|
| 3818 | def __getitem__(self, x):
|
|---|
| 3819 | return list.__getitem__(self, x)
|
|---|
| 3820 | self.assertEqual(L([1,2,3])[:2], [1,2])
|
|---|
| 3821 | self.assertEqual(L([1,2,3])[slice(2)], [1,2])
|
|---|
| 3822 | self.assertEqual(L([1,2,3]).__getitem__(slice(2)), [1,2])
|
|---|
| 3823 | # Now do lists and __setitem__
|
|---|
| 3824 | a = L([1,2,3])
|
|---|
| 3825 | a[slice(1, 3)] = [3,2]
|
|---|
| 3826 | self.assertEqual(a, [1,3,2])
|
|---|
| 3827 | a[slice(0, 2, 1)] = [3,1]
|
|---|
| 3828 | self.assertEqual(a, [3,1,2])
|
|---|
| 3829 | a.__setitem__(slice(1, 3), [2,1])
|
|---|
| 3830 | self.assertEqual(a, [3,2,1])
|
|---|
| 3831 | a.__setitem__(slice(0, 2, 1), [2,3])
|
|---|
| 3832 | self.assertEqual(a, [2,3,1])
|
|---|
| 3833 |
|
|---|
| 3834 | def test_subtype_resurrection(self):
|
|---|
| 3835 | # Testing resurrection of new-style instance...
|
|---|
| 3836 |
|
|---|
| 3837 | class C(object):
|
|---|
| 3838 | container = []
|
|---|
| 3839 |
|
|---|
| 3840 | def __del__(self):
|
|---|
| 3841 | # resurrect the instance
|
|---|
| 3842 | C.container.append(self)
|
|---|
| 3843 |
|
|---|
| 3844 | c = C()
|
|---|
| 3845 | c.attr = 42
|
|---|
| 3846 |
|
|---|
| 3847 | # The most interesting thing here is whether this blows up, due to
|
|---|
| 3848 | # flawed GC tracking logic in typeobject.c's call_finalizer() (a 2.2.1
|
|---|
| 3849 | # bug).
|
|---|
| 3850 | del c
|
|---|
| 3851 |
|
|---|
| 3852 | # If that didn't blow up, it's also interesting to see whether clearing
|
|---|
| 3853 | # the last container slot works: that will attempt to delete c again,
|
|---|
| 3854 | # which will cause c to get appended back to the container again
|
|---|
| 3855 | # "during" the del. (On non-CPython implementations, however, __del__
|
|---|
| 3856 | # is typically not called again.)
|
|---|
| 3857 | test_support.gc_collect()
|
|---|
| 3858 | self.assertEqual(len(C.container), 1)
|
|---|
| 3859 | del C.container[-1]
|
|---|
| 3860 | if test_support.check_impl_detail():
|
|---|
| 3861 | test_support.gc_collect()
|
|---|
| 3862 | self.assertEqual(len(C.container), 1)
|
|---|
| 3863 | self.assertEqual(C.container[-1].attr, 42)
|
|---|
| 3864 |
|
|---|
| 3865 | # Make c mortal again, so that the test framework with -l doesn't report
|
|---|
| 3866 | # it as a leak.
|
|---|
| 3867 | del C.__del__
|
|---|
| 3868 |
|
|---|
| 3869 | def test_slots_trash(self):
|
|---|
| 3870 | # Testing slot trash...
|
|---|
| 3871 | # Deallocating deeply nested slotted trash caused stack overflows
|
|---|
| 3872 | class trash(object):
|
|---|
| 3873 | __slots__ = ['x']
|
|---|
| 3874 | def __init__(self, x):
|
|---|
| 3875 | self.x = x
|
|---|
| 3876 | o = None
|
|---|
| 3877 | for i in xrange(50000):
|
|---|
| 3878 | o = trash(o)
|
|---|
| 3879 | del o
|
|---|
| 3880 |
|
|---|
| 3881 | def test_slots_multiple_inheritance(self):
|
|---|
| 3882 | # SF bug 575229, multiple inheritance w/ slots dumps core
|
|---|
| 3883 | class A(object):
|
|---|
| 3884 | __slots__=()
|
|---|
| 3885 | class B(object):
|
|---|
| 3886 | pass
|
|---|
| 3887 | class C(A,B) :
|
|---|
| 3888 | __slots__=()
|
|---|
| 3889 | if test_support.check_impl_detail():
|
|---|
| 3890 | self.assertEqual(C.__basicsize__, B.__basicsize__)
|
|---|
| 3891 | self.assertTrue(hasattr(C, '__dict__'))
|
|---|
| 3892 | self.assertTrue(hasattr(C, '__weakref__'))
|
|---|
| 3893 | C().x = 2
|
|---|
| 3894 |
|
|---|
| 3895 | def test_rmul(self):
|
|---|
| 3896 | # Testing correct invocation of __rmul__...
|
|---|
| 3897 | # SF patch 592646
|
|---|
| 3898 | class C(object):
|
|---|
| 3899 | def __mul__(self, other):
|
|---|
| 3900 | return "mul"
|
|---|
| 3901 | def __rmul__(self, other):
|
|---|
| 3902 | return "rmul"
|
|---|
| 3903 | a = C()
|
|---|
| 3904 | self.assertEqual(a*2, "mul")
|
|---|
| 3905 | self.assertEqual(a*2.2, "mul")
|
|---|
| 3906 | self.assertEqual(2*a, "rmul")
|
|---|
| 3907 | self.assertEqual(2.2*a, "rmul")
|
|---|
| 3908 |
|
|---|
| 3909 | def test_ipow(self):
|
|---|
| 3910 | # Testing correct invocation of __ipow__...
|
|---|
| 3911 | # [SF bug 620179]
|
|---|
| 3912 | class C(object):
|
|---|
| 3913 | def __ipow__(self, other):
|
|---|
| 3914 | pass
|
|---|
| 3915 | a = C()
|
|---|
| 3916 | a **= 2
|
|---|
| 3917 |
|
|---|
| 3918 | def test_mutable_bases(self):
|
|---|
| 3919 | # Testing mutable bases...
|
|---|
| 3920 |
|
|---|
| 3921 | # stuff that should work:
|
|---|
| 3922 | class C(object):
|
|---|
| 3923 | pass
|
|---|
| 3924 | class C2(object):
|
|---|
| 3925 | def __getattribute__(self, attr):
|
|---|
| 3926 | if attr == 'a':
|
|---|
| 3927 | return 2
|
|---|
| 3928 | else:
|
|---|
| 3929 | return super(C2, self).__getattribute__(attr)
|
|---|
| 3930 | def meth(self):
|
|---|
| 3931 | return 1
|
|---|
| 3932 | class D(C):
|
|---|
| 3933 | pass
|
|---|
| 3934 | class E(D):
|
|---|
| 3935 | pass
|
|---|
| 3936 | d = D()
|
|---|
| 3937 | e = E()
|
|---|
| 3938 | D.__bases__ = (C,)
|
|---|
| 3939 | D.__bases__ = (C2,)
|
|---|
| 3940 | self.assertEqual(d.meth(), 1)
|
|---|
| 3941 | self.assertEqual(e.meth(), 1)
|
|---|
| 3942 | self.assertEqual(d.a, 2)
|
|---|
| 3943 | self.assertEqual(e.a, 2)
|
|---|
| 3944 | self.assertEqual(C2.__subclasses__(), [D])
|
|---|
| 3945 |
|
|---|
| 3946 | try:
|
|---|
| 3947 | del D.__bases__
|
|---|
| 3948 | except (TypeError, AttributeError):
|
|---|
| 3949 | pass
|
|---|
| 3950 | else:
|
|---|
| 3951 | self.fail("shouldn't be able to delete .__bases__")
|
|---|
| 3952 |
|
|---|
| 3953 | try:
|
|---|
| 3954 | D.__bases__ = ()
|
|---|
| 3955 | except TypeError, msg:
|
|---|
| 3956 | if str(msg) == "a new-style class can't have only classic bases":
|
|---|
| 3957 | self.fail("wrong error message for .__bases__ = ()")
|
|---|
| 3958 | else:
|
|---|
| 3959 | self.fail("shouldn't be able to set .__bases__ to ()")
|
|---|
| 3960 |
|
|---|
| 3961 | try:
|
|---|
| 3962 | D.__bases__ = (D,)
|
|---|
| 3963 | except TypeError:
|
|---|
| 3964 | pass
|
|---|
| 3965 | else:
|
|---|
| 3966 | # actually, we'll have crashed by here...
|
|---|
| 3967 | self.fail("shouldn't be able to create inheritance cycles")
|
|---|
| 3968 |
|
|---|
| 3969 | try:
|
|---|
| 3970 | D.__bases__ = (C, C)
|
|---|
| 3971 | except TypeError:
|
|---|
| 3972 | pass
|
|---|
| 3973 | else:
|
|---|
| 3974 | self.fail("didn't detect repeated base classes")
|
|---|
| 3975 |
|
|---|
| 3976 | try:
|
|---|
| 3977 | D.__bases__ = (E,)
|
|---|
| 3978 | except TypeError:
|
|---|
| 3979 | pass
|
|---|
| 3980 | else:
|
|---|
| 3981 | self.fail("shouldn't be able to create inheritance cycles")
|
|---|
| 3982 |
|
|---|
| 3983 | # let's throw a classic class into the mix:
|
|---|
| 3984 | class Classic:
|
|---|
| 3985 | def meth2(self):
|
|---|
| 3986 | return 3
|
|---|
| 3987 |
|
|---|
| 3988 | D.__bases__ = (C, Classic)
|
|---|
| 3989 |
|
|---|
| 3990 | self.assertEqual(d.meth2(), 3)
|
|---|
| 3991 | self.assertEqual(e.meth2(), 3)
|
|---|
| 3992 | try:
|
|---|
| 3993 | d.a
|
|---|
| 3994 | except AttributeError:
|
|---|
| 3995 | pass
|
|---|
| 3996 | else:
|
|---|
| 3997 | self.fail("attribute should have vanished")
|
|---|
| 3998 |
|
|---|
| 3999 | try:
|
|---|
| 4000 | D.__bases__ = (Classic,)
|
|---|
| 4001 | except TypeError:
|
|---|
| 4002 | pass
|
|---|
| 4003 | else:
|
|---|
| 4004 | self.fail("new-style class must have a new-style base")
|
|---|
| 4005 |
|
|---|
| 4006 | def test_builtin_bases(self):
|
|---|
| 4007 | # Make sure all the builtin types can have their base queried without
|
|---|
| 4008 | # segfaulting. See issue #5787.
|
|---|
| 4009 | builtin_types = [tp for tp in __builtin__.__dict__.itervalues()
|
|---|
| 4010 | if isinstance(tp, type)]
|
|---|
| 4011 | for tp in builtin_types:
|
|---|
| 4012 | object.__getattribute__(tp, "__bases__")
|
|---|
| 4013 | if tp is not object:
|
|---|
| 4014 | self.assertEqual(len(tp.__bases__), 1, tp)
|
|---|
| 4015 |
|
|---|
| 4016 | class L(list):
|
|---|
| 4017 | pass
|
|---|
| 4018 |
|
|---|
| 4019 | class C(object):
|
|---|
| 4020 | pass
|
|---|
| 4021 |
|
|---|
| 4022 | class D(C):
|
|---|
| 4023 | pass
|
|---|
| 4024 |
|
|---|
| 4025 | try:
|
|---|
| 4026 | L.__bases__ = (dict,)
|
|---|
| 4027 | except TypeError:
|
|---|
| 4028 | pass
|
|---|
| 4029 | else:
|
|---|
| 4030 | self.fail("shouldn't turn list subclass into dict subclass")
|
|---|
| 4031 |
|
|---|
| 4032 | try:
|
|---|
| 4033 | list.__bases__ = (dict,)
|
|---|
| 4034 | except TypeError:
|
|---|
| 4035 | pass
|
|---|
| 4036 | else:
|
|---|
| 4037 | self.fail("shouldn't be able to assign to list.__bases__")
|
|---|
| 4038 |
|
|---|
| 4039 | try:
|
|---|
| 4040 | D.__bases__ = (C, list)
|
|---|
| 4041 | except TypeError:
|
|---|
| 4042 | pass
|
|---|
| 4043 | else:
|
|---|
| 4044 | assert 0, "best_base calculation found wanting"
|
|---|
| 4045 |
|
|---|
| 4046 |
|
|---|
| 4047 | def test_mutable_bases_with_failing_mro(self):
|
|---|
| 4048 | # Testing mutable bases with failing mro...
|
|---|
| 4049 | class WorkOnce(type):
|
|---|
| 4050 | def __new__(self, name, bases, ns):
|
|---|
| 4051 | self.flag = 0
|
|---|
| 4052 | return super(WorkOnce, self).__new__(WorkOnce, name, bases, ns)
|
|---|
| 4053 | def mro(self):
|
|---|
| 4054 | if self.flag > 0:
|
|---|
| 4055 | raise RuntimeError, "bozo"
|
|---|
| 4056 | else:
|
|---|
| 4057 | self.flag += 1
|
|---|
| 4058 | return type.mro(self)
|
|---|
| 4059 |
|
|---|
| 4060 | class WorkAlways(type):
|
|---|
| 4061 | def mro(self):
|
|---|
| 4062 | # this is here to make sure that .mro()s aren't called
|
|---|
| 4063 | # with an exception set (which was possible at one point).
|
|---|
| 4064 | # An error message will be printed in a debug build.
|
|---|
| 4065 | # What's a good way to test for this?
|
|---|
| 4066 | return type.mro(self)
|
|---|
| 4067 |
|
|---|
| 4068 | class C(object):
|
|---|
| 4069 | pass
|
|---|
| 4070 |
|
|---|
| 4071 | class C2(object):
|
|---|
| 4072 | pass
|
|---|
| 4073 |
|
|---|
| 4074 | class D(C):
|
|---|
| 4075 | pass
|
|---|
| 4076 |
|
|---|
| 4077 | class E(D):
|
|---|
| 4078 | pass
|
|---|
| 4079 |
|
|---|
| 4080 | class F(D):
|
|---|
| 4081 | __metaclass__ = WorkOnce
|
|---|
| 4082 |
|
|---|
| 4083 | class G(D):
|
|---|
| 4084 | __metaclass__ = WorkAlways
|
|---|
| 4085 |
|
|---|
| 4086 | # Immediate subclasses have their mro's adjusted in alphabetical
|
|---|
| 4087 | # order, so E's will get adjusted before adjusting F's fails. We
|
|---|
| 4088 | # check here that E's gets restored.
|
|---|
| 4089 |
|
|---|
| 4090 | E_mro_before = E.__mro__
|
|---|
| 4091 | D_mro_before = D.__mro__
|
|---|
| 4092 |
|
|---|
| 4093 | try:
|
|---|
| 4094 | D.__bases__ = (C2,)
|
|---|
| 4095 | except RuntimeError:
|
|---|
| 4096 | self.assertEqual(E.__mro__, E_mro_before)
|
|---|
| 4097 | self.assertEqual(D.__mro__, D_mro_before)
|
|---|
| 4098 | else:
|
|---|
| 4099 | self.fail("exception not propagated")
|
|---|
| 4100 |
|
|---|
| 4101 | def test_mutable_bases_catch_mro_conflict(self):
|
|---|
| 4102 | # Testing mutable bases catch mro conflict...
|
|---|
| 4103 | class A(object):
|
|---|
| 4104 | pass
|
|---|
| 4105 |
|
|---|
| 4106 | class B(object):
|
|---|
| 4107 | pass
|
|---|
| 4108 |
|
|---|
| 4109 | class C(A, B):
|
|---|
| 4110 | pass
|
|---|
| 4111 |
|
|---|
| 4112 | class D(A, B):
|
|---|
| 4113 | pass
|
|---|
| 4114 |
|
|---|
| 4115 | class E(C, D):
|
|---|
| 4116 | pass
|
|---|
| 4117 |
|
|---|
| 4118 | try:
|
|---|
| 4119 | C.__bases__ = (B, A)
|
|---|
| 4120 | except TypeError:
|
|---|
| 4121 | pass
|
|---|
| 4122 | else:
|
|---|
| 4123 | self.fail("didn't catch MRO conflict")
|
|---|
| 4124 |
|
|---|
| 4125 | def test_mutable_names(self):
|
|---|
| 4126 | # Testing mutable names...
|
|---|
| 4127 | class C(object):
|
|---|
| 4128 | pass
|
|---|
| 4129 |
|
|---|
| 4130 | # C.__module__ could be 'test_descr' or '__main__'
|
|---|
| 4131 | mod = C.__module__
|
|---|
| 4132 |
|
|---|
| 4133 | C.__name__ = 'D'
|
|---|
| 4134 | self.assertEqual((C.__module__, C.__name__), (mod, 'D'))
|
|---|
| 4135 |
|
|---|
| 4136 | C.__name__ = 'D.E'
|
|---|
| 4137 | self.assertEqual((C.__module__, C.__name__), (mod, 'D.E'))
|
|---|
| 4138 |
|
|---|
| 4139 | def test_evil_type_name(self):
|
|---|
| 4140 | # A badly placed Py_DECREF in type_set_name led to arbitrary code
|
|---|
| 4141 | # execution while the type structure was not in a sane state, and a
|
|---|
| 4142 | # possible segmentation fault as a result. See bug #16447.
|
|---|
| 4143 | class Nasty(str):
|
|---|
| 4144 | def __del__(self):
|
|---|
| 4145 | C.__name__ = "other"
|
|---|
| 4146 |
|
|---|
| 4147 | class C(object):
|
|---|
| 4148 | pass
|
|---|
| 4149 |
|
|---|
| 4150 | C.__name__ = Nasty("abc")
|
|---|
| 4151 | C.__name__ = "normal"
|
|---|
| 4152 |
|
|---|
| 4153 | def test_subclass_right_op(self):
|
|---|
| 4154 | # Testing correct dispatch of subclass overloading __r<op>__...
|
|---|
| 4155 |
|
|---|
| 4156 | # This code tests various cases where right-dispatch of a subclass
|
|---|
| 4157 | # should be preferred over left-dispatch of a base class.
|
|---|
| 4158 |
|
|---|
| 4159 | # Case 1: subclass of int; this tests code in abstract.c::binary_op1()
|
|---|
| 4160 |
|
|---|
| 4161 | class B(int):
|
|---|
| 4162 | def __floordiv__(self, other):
|
|---|
| 4163 | return "B.__floordiv__"
|
|---|
| 4164 | def __rfloordiv__(self, other):
|
|---|
| 4165 | return "B.__rfloordiv__"
|
|---|
| 4166 |
|
|---|
| 4167 | self.assertEqual(B(1) // 1, "B.__floordiv__")
|
|---|
| 4168 | self.assertEqual(1 // B(1), "B.__rfloordiv__")
|
|---|
| 4169 |
|
|---|
| 4170 | # Case 2: subclass of object; this is just the baseline for case 3
|
|---|
| 4171 |
|
|---|
| 4172 | class C(object):
|
|---|
| 4173 | def __floordiv__(self, other):
|
|---|
| 4174 | return "C.__floordiv__"
|
|---|
| 4175 | def __rfloordiv__(self, other):
|
|---|
| 4176 | return "C.__rfloordiv__"
|
|---|
| 4177 |
|
|---|
| 4178 | self.assertEqual(C() // 1, "C.__floordiv__")
|
|---|
| 4179 | self.assertEqual(1 // C(), "C.__rfloordiv__")
|
|---|
| 4180 |
|
|---|
| 4181 | # Case 3: subclass of new-style class; here it gets interesting
|
|---|
| 4182 |
|
|---|
| 4183 | class D(C):
|
|---|
| 4184 | def __floordiv__(self, other):
|
|---|
| 4185 | return "D.__floordiv__"
|
|---|
| 4186 | def __rfloordiv__(self, other):
|
|---|
| 4187 | return "D.__rfloordiv__"
|
|---|
| 4188 |
|
|---|
| 4189 | self.assertEqual(D() // C(), "D.__floordiv__")
|
|---|
| 4190 | self.assertEqual(C() // D(), "D.__rfloordiv__")
|
|---|
| 4191 |
|
|---|
| 4192 | # Case 4: this didn't work right in 2.2.2 and 2.3a1
|
|---|
| 4193 |
|
|---|
| 4194 | class E(C):
|
|---|
| 4195 | pass
|
|---|
| 4196 |
|
|---|
| 4197 | self.assertEqual(E.__rfloordiv__, C.__rfloordiv__)
|
|---|
| 4198 |
|
|---|
| 4199 | self.assertEqual(E() // 1, "C.__floordiv__")
|
|---|
| 4200 | self.assertEqual(1 // E(), "C.__rfloordiv__")
|
|---|
| 4201 | self.assertEqual(E() // C(), "C.__floordiv__")
|
|---|
| 4202 | self.assertEqual(C() // E(), "C.__floordiv__") # This one would fail
|
|---|
| 4203 |
|
|---|
| 4204 | @test_support.impl_detail("testing an internal kind of method object")
|
|---|
| 4205 | def test_meth_class_get(self):
|
|---|
| 4206 | # Testing __get__ method of METH_CLASS C methods...
|
|---|
| 4207 | # Full coverage of descrobject.c::classmethod_get()
|
|---|
| 4208 |
|
|---|
| 4209 | # Baseline
|
|---|
| 4210 | arg = [1, 2, 3]
|
|---|
| 4211 | res = {1: None, 2: None, 3: None}
|
|---|
| 4212 | self.assertEqual(dict.fromkeys(arg), res)
|
|---|
| 4213 | self.assertEqual({}.fromkeys(arg), res)
|
|---|
| 4214 |
|
|---|
| 4215 | # Now get the descriptor
|
|---|
| 4216 | descr = dict.__dict__["fromkeys"]
|
|---|
| 4217 |
|
|---|
| 4218 | # More baseline using the descriptor directly
|
|---|
| 4219 | self.assertEqual(descr.__get__(None, dict)(arg), res)
|
|---|
| 4220 | self.assertEqual(descr.__get__({})(arg), res)
|
|---|
| 4221 |
|
|---|
| 4222 | # Now check various error cases
|
|---|
| 4223 | try:
|
|---|
| 4224 | descr.__get__(None, None)
|
|---|
| 4225 | except TypeError:
|
|---|
| 4226 | pass
|
|---|
| 4227 | else:
|
|---|
| 4228 | self.fail("shouldn't have allowed descr.__get__(None, None)")
|
|---|
| 4229 | try:
|
|---|
| 4230 | descr.__get__(42)
|
|---|
| 4231 | except TypeError:
|
|---|
| 4232 | pass
|
|---|
| 4233 | else:
|
|---|
| 4234 | self.fail("shouldn't have allowed descr.__get__(42)")
|
|---|
| 4235 | try:
|
|---|
| 4236 | descr.__get__(None, 42)
|
|---|
| 4237 | except TypeError:
|
|---|
| 4238 | pass
|
|---|
| 4239 | else:
|
|---|
| 4240 | self.fail("shouldn't have allowed descr.__get__(None, 42)")
|
|---|
| 4241 | try:
|
|---|
| 4242 | descr.__get__(None, int)
|
|---|
| 4243 | except TypeError:
|
|---|
| 4244 | pass
|
|---|
| 4245 | else:
|
|---|
| 4246 | self.fail("shouldn't have allowed descr.__get__(None, int)")
|
|---|
| 4247 |
|
|---|
| 4248 | def test_isinst_isclass(self):
|
|---|
| 4249 | # Testing proxy isinstance() and isclass()...
|
|---|
| 4250 | class Proxy(object):
|
|---|
| 4251 | def __init__(self, obj):
|
|---|
| 4252 | self.__obj = obj
|
|---|
| 4253 | def __getattribute__(self, name):
|
|---|
| 4254 | if name.startswith("_Proxy__"):
|
|---|
| 4255 | return object.__getattribute__(self, name)
|
|---|
| 4256 | else:
|
|---|
| 4257 | return getattr(self.__obj, name)
|
|---|
| 4258 | # Test with a classic class
|
|---|
| 4259 | class C:
|
|---|
| 4260 | pass
|
|---|
| 4261 | a = C()
|
|---|
| 4262 | pa = Proxy(a)
|
|---|
| 4263 | self.assertIsInstance(a, C) # Baseline
|
|---|
| 4264 | self.assertIsInstance(pa, C) # Test
|
|---|
| 4265 | # Test with a classic subclass
|
|---|
| 4266 | class D(C):
|
|---|
| 4267 | pass
|
|---|
| 4268 | a = D()
|
|---|
| 4269 | pa = Proxy(a)
|
|---|
| 4270 | self.assertIsInstance(a, C) # Baseline
|
|---|
| 4271 | self.assertIsInstance(pa, C) # Test
|
|---|
| 4272 | # Test with a new-style class
|
|---|
| 4273 | class C(object):
|
|---|
| 4274 | pass
|
|---|
| 4275 | a = C()
|
|---|
| 4276 | pa = Proxy(a)
|
|---|
| 4277 | self.assertIsInstance(a, C) # Baseline
|
|---|
| 4278 | self.assertIsInstance(pa, C) # Test
|
|---|
| 4279 | # Test with a new-style subclass
|
|---|
| 4280 | class D(C):
|
|---|
| 4281 | pass
|
|---|
| 4282 | a = D()
|
|---|
| 4283 | pa = Proxy(a)
|
|---|
| 4284 | self.assertIsInstance(a, C) # Baseline
|
|---|
| 4285 | self.assertIsInstance(pa, C) # Test
|
|---|
| 4286 |
|
|---|
| 4287 | def test_proxy_super(self):
|
|---|
| 4288 | # Testing super() for a proxy object...
|
|---|
| 4289 | class Proxy(object):
|
|---|
| 4290 | def __init__(self, obj):
|
|---|
| 4291 | self.__obj = obj
|
|---|
| 4292 | def __getattribute__(self, name):
|
|---|
| 4293 | if name.startswith("_Proxy__"):
|
|---|
| 4294 | return object.__getattribute__(self, name)
|
|---|
| 4295 | else:
|
|---|
| 4296 | return getattr(self.__obj, name)
|
|---|
| 4297 |
|
|---|
| 4298 | class B(object):
|
|---|
| 4299 | def f(self):
|
|---|
| 4300 | return "B.f"
|
|---|
| 4301 |
|
|---|
| 4302 | class C(B):
|
|---|
| 4303 | def f(self):
|
|---|
| 4304 | return super(C, self).f() + "->C.f"
|
|---|
| 4305 |
|
|---|
| 4306 | obj = C()
|
|---|
| 4307 | p = Proxy(obj)
|
|---|
| 4308 | self.assertEqual(C.__dict__["f"](p), "B.f->C.f")
|
|---|
| 4309 |
|
|---|
| 4310 | def test_carloverre(self):
|
|---|
| 4311 | # Testing prohibition of Carlo Verre's hack...
|
|---|
| 4312 | try:
|
|---|
| 4313 | object.__setattr__(str, "foo", 42)
|
|---|
| 4314 | except TypeError:
|
|---|
| 4315 | pass
|
|---|
| 4316 | else:
|
|---|
| 4317 | self.fail("Carlo Verre __setattr__ succeeded!")
|
|---|
| 4318 | try:
|
|---|
| 4319 | object.__delattr__(str, "lower")
|
|---|
| 4320 | except TypeError:
|
|---|
| 4321 | pass
|
|---|
| 4322 | else:
|
|---|
| 4323 | self.fail("Carlo Verre __delattr__ succeeded!")
|
|---|
| 4324 |
|
|---|
| 4325 | def test_weakref_segfault(self):
|
|---|
| 4326 | # Testing weakref segfault...
|
|---|
| 4327 | # SF 742911
|
|---|
| 4328 | import weakref
|
|---|
| 4329 |
|
|---|
| 4330 | class Provoker:
|
|---|
| 4331 | def __init__(self, referrent):
|
|---|
| 4332 | self.ref = weakref.ref(referrent)
|
|---|
| 4333 |
|
|---|
| 4334 | def __del__(self):
|
|---|
| 4335 | x = self.ref()
|
|---|
| 4336 |
|
|---|
| 4337 | class Oops(object):
|
|---|
| 4338 | pass
|
|---|
| 4339 |
|
|---|
| 4340 | o = Oops()
|
|---|
| 4341 | o.whatever = Provoker(o)
|
|---|
| 4342 | del o
|
|---|
| 4343 |
|
|---|
| 4344 | def test_wrapper_segfault(self):
|
|---|
| 4345 | # SF 927248: deeply nested wrappers could cause stack overflow
|
|---|
| 4346 | f = lambda:None
|
|---|
| 4347 | for i in xrange(1000000):
|
|---|
| 4348 | f = f.__call__
|
|---|
| 4349 | f = None
|
|---|
| 4350 |
|
|---|
| 4351 | def test_file_fault(self):
|
|---|
| 4352 | # Testing sys.stdout is changed in getattr...
|
|---|
| 4353 | test_stdout = sys.stdout
|
|---|
| 4354 | class StdoutGuard:
|
|---|
| 4355 | def __getattr__(self, attr):
|
|---|
| 4356 | sys.stdout = sys.__stdout__
|
|---|
| 4357 | raise RuntimeError("Premature access to sys.stdout.%s" % attr)
|
|---|
| 4358 | sys.stdout = StdoutGuard()
|
|---|
| 4359 | try:
|
|---|
| 4360 | print "Oops!"
|
|---|
| 4361 | except RuntimeError:
|
|---|
| 4362 | pass
|
|---|
| 4363 | finally:
|
|---|
| 4364 | sys.stdout = test_stdout
|
|---|
| 4365 |
|
|---|
| 4366 | def test_vicious_descriptor_nonsense(self):
|
|---|
| 4367 | # Testing vicious_descriptor_nonsense...
|
|---|
| 4368 |
|
|---|
| 4369 | # A potential segfault spotted by Thomas Wouters in mail to
|
|---|
| 4370 | # python-dev 2003-04-17, turned into an example & fixed by Michael
|
|---|
| 4371 | # Hudson just less than four months later...
|
|---|
| 4372 |
|
|---|
| 4373 | class Evil(object):
|
|---|
| 4374 | def __hash__(self):
|
|---|
| 4375 | return hash('attr')
|
|---|
| 4376 | def __eq__(self, other):
|
|---|
| 4377 | del C.attr
|
|---|
| 4378 | return 0
|
|---|
| 4379 |
|
|---|
| 4380 | class Descr(object):
|
|---|
| 4381 | def __get__(self, ob, type=None):
|
|---|
| 4382 | return 1
|
|---|
| 4383 |
|
|---|
| 4384 | class C(object):
|
|---|
| 4385 | attr = Descr()
|
|---|
| 4386 |
|
|---|
| 4387 | c = C()
|
|---|
| 4388 | c.__dict__[Evil()] = 0
|
|---|
| 4389 |
|
|---|
| 4390 | self.assertEqual(c.attr, 1)
|
|---|
| 4391 | # this makes a crash more likely:
|
|---|
| 4392 | test_support.gc_collect()
|
|---|
| 4393 | self.assertEqual(hasattr(c, 'attr'), False)
|
|---|
| 4394 |
|
|---|
| 4395 | def test_init(self):
|
|---|
| 4396 | # SF 1155938
|
|---|
| 4397 | class Foo(object):
|
|---|
| 4398 | def __init__(self):
|
|---|
| 4399 | return 10
|
|---|
| 4400 | try:
|
|---|
| 4401 | Foo()
|
|---|
| 4402 | except TypeError:
|
|---|
| 4403 | pass
|
|---|
| 4404 | else:
|
|---|
| 4405 | self.fail("did not test __init__() for None return")
|
|---|
| 4406 |
|
|---|
| 4407 | def test_method_wrapper(self):
|
|---|
| 4408 | # Testing method-wrapper objects...
|
|---|
| 4409 | # <type 'method-wrapper'> did not support any reflection before 2.5
|
|---|
| 4410 |
|
|---|
| 4411 | l = []
|
|---|
| 4412 | self.assertEqual(l.__add__, l.__add__)
|
|---|
| 4413 | self.assertEqual(l.__add__, [].__add__)
|
|---|
| 4414 | self.assertTrue(l.__add__ != [5].__add__)
|
|---|
| 4415 | self.assertTrue(l.__add__ != l.__mul__)
|
|---|
| 4416 | self.assertTrue(l.__add__.__name__ == '__add__')
|
|---|
| 4417 | if hasattr(l.__add__, '__self__'):
|
|---|
| 4418 | # CPython
|
|---|
| 4419 | self.assertTrue(l.__add__.__self__ is l)
|
|---|
| 4420 | self.assertTrue(l.__add__.__objclass__ is list)
|
|---|
| 4421 | else:
|
|---|
| 4422 | # Python implementations where [].__add__ is a normal bound method
|
|---|
| 4423 | self.assertTrue(l.__add__.im_self is l)
|
|---|
| 4424 | self.assertTrue(l.__add__.im_class is list)
|
|---|
| 4425 | self.assertEqual(l.__add__.__doc__, list.__add__.__doc__)
|
|---|
| 4426 | try:
|
|---|
| 4427 | hash(l.__add__)
|
|---|
| 4428 | except TypeError:
|
|---|
| 4429 | pass
|
|---|
| 4430 | else:
|
|---|
| 4431 | self.fail("no TypeError from hash([].__add__)")
|
|---|
| 4432 |
|
|---|
| 4433 | t = ()
|
|---|
| 4434 | t += (7,)
|
|---|
| 4435 | self.assertEqual(t.__add__, (7,).__add__)
|
|---|
| 4436 | self.assertEqual(hash(t.__add__), hash((7,).__add__))
|
|---|
| 4437 |
|
|---|
| 4438 | def test_not_implemented(self):
|
|---|
| 4439 | # Testing NotImplemented...
|
|---|
| 4440 | # all binary methods should be able to return a NotImplemented
|
|---|
| 4441 | import operator
|
|---|
| 4442 |
|
|---|
| 4443 | def specialmethod(self, other):
|
|---|
| 4444 | return NotImplemented
|
|---|
| 4445 |
|
|---|
| 4446 | def check(expr, x, y):
|
|---|
| 4447 | try:
|
|---|
| 4448 | exec expr in {'x': x, 'y': y, 'operator': operator}
|
|---|
| 4449 | except TypeError:
|
|---|
| 4450 | pass
|
|---|
| 4451 | else:
|
|---|
| 4452 | self.fail("no TypeError from %r" % (expr,))
|
|---|
| 4453 |
|
|---|
| 4454 | N1 = sys.maxint + 1L # might trigger OverflowErrors instead of
|
|---|
| 4455 | # TypeErrors
|
|---|
| 4456 | N2 = sys.maxint # if sizeof(int) < sizeof(long), might trigger
|
|---|
| 4457 | # ValueErrors instead of TypeErrors
|
|---|
| 4458 | for metaclass in [type, types.ClassType]:
|
|---|
| 4459 | for name, expr, iexpr in [
|
|---|
| 4460 | ('__add__', 'x + y', 'x += y'),
|
|---|
| 4461 | ('__sub__', 'x - y', 'x -= y'),
|
|---|
| 4462 | ('__mul__', 'x * y', 'x *= y'),
|
|---|
| 4463 | ('__truediv__', 'operator.truediv(x, y)', None),
|
|---|
| 4464 | ('__floordiv__', 'operator.floordiv(x, y)', None),
|
|---|
| 4465 | ('__div__', 'x / y', 'x /= y'),
|
|---|
| 4466 | ('__mod__', 'x % y', 'x %= y'),
|
|---|
| 4467 | ('__divmod__', 'divmod(x, y)', None),
|
|---|
| 4468 | ('__pow__', 'x ** y', 'x **= y'),
|
|---|
| 4469 | ('__lshift__', 'x << y', 'x <<= y'),
|
|---|
| 4470 | ('__rshift__', 'x >> y', 'x >>= y'),
|
|---|
| 4471 | ('__and__', 'x & y', 'x &= y'),
|
|---|
| 4472 | ('__or__', 'x | y', 'x |= y'),
|
|---|
| 4473 | ('__xor__', 'x ^ y', 'x ^= y'),
|
|---|
| 4474 | ('__coerce__', 'coerce(x, y)', None)]:
|
|---|
| 4475 | if name == '__coerce__':
|
|---|
| 4476 | rname = name
|
|---|
| 4477 | else:
|
|---|
| 4478 | rname = '__r' + name[2:]
|
|---|
| 4479 | A = metaclass('A', (), {name: specialmethod})
|
|---|
| 4480 | B = metaclass('B', (), {rname: specialmethod})
|
|---|
| 4481 | a = A()
|
|---|
| 4482 | b = B()
|
|---|
| 4483 | check(expr, a, a)
|
|---|
| 4484 | check(expr, a, b)
|
|---|
| 4485 | check(expr, b, a)
|
|---|
| 4486 | check(expr, b, b)
|
|---|
| 4487 | check(expr, a, N1)
|
|---|
| 4488 | check(expr, a, N2)
|
|---|
| 4489 | check(expr, N1, b)
|
|---|
| 4490 | check(expr, N2, b)
|
|---|
| 4491 | if iexpr:
|
|---|
| 4492 | check(iexpr, a, a)
|
|---|
| 4493 | check(iexpr, a, b)
|
|---|
| 4494 | check(iexpr, b, a)
|
|---|
| 4495 | check(iexpr, b, b)
|
|---|
| 4496 | check(iexpr, a, N1)
|
|---|
| 4497 | check(iexpr, a, N2)
|
|---|
| 4498 | iname = '__i' + name[2:]
|
|---|
| 4499 | C = metaclass('C', (), {iname: specialmethod})
|
|---|
| 4500 | c = C()
|
|---|
| 4501 | check(iexpr, c, a)
|
|---|
| 4502 | check(iexpr, c, b)
|
|---|
| 4503 | check(iexpr, c, N1)
|
|---|
| 4504 | check(iexpr, c, N2)
|
|---|
| 4505 |
|
|---|
| 4506 | def test_assign_slice(self):
|
|---|
| 4507 | # ceval.c's assign_slice used to check for
|
|---|
| 4508 | # tp->tp_as_sequence->sq_slice instead of
|
|---|
| 4509 | # tp->tp_as_sequence->sq_ass_slice
|
|---|
| 4510 |
|
|---|
| 4511 | class C(object):
|
|---|
| 4512 | def __setslice__(self, start, stop, value):
|
|---|
| 4513 | self.value = value
|
|---|
| 4514 |
|
|---|
| 4515 | c = C()
|
|---|
| 4516 | c[1:2] = 3
|
|---|
| 4517 | self.assertEqual(c.value, 3)
|
|---|
| 4518 |
|
|---|
| 4519 | def test_set_and_no_get(self):
|
|---|
| 4520 | # See
|
|---|
| 4521 | # http://mail.python.org/pipermail/python-dev/2010-January/095637.html
|
|---|
| 4522 | class Descr(object):
|
|---|
| 4523 |
|
|---|
| 4524 | def __init__(self, name):
|
|---|
| 4525 | self.name = name
|
|---|
| 4526 |
|
|---|
| 4527 | def __set__(self, obj, value):
|
|---|
| 4528 | obj.__dict__[self.name] = value
|
|---|
| 4529 | descr = Descr("a")
|
|---|
| 4530 |
|
|---|
| 4531 | class X(object):
|
|---|
| 4532 | a = descr
|
|---|
| 4533 |
|
|---|
| 4534 | x = X()
|
|---|
| 4535 | self.assertIs(x.a, descr)
|
|---|
| 4536 | x.a = 42
|
|---|
| 4537 | self.assertEqual(x.a, 42)
|
|---|
| 4538 |
|
|---|
| 4539 | # Also check type_getattro for correctness.
|
|---|
| 4540 | class Meta(type):
|
|---|
| 4541 | pass
|
|---|
| 4542 | class X(object):
|
|---|
| 4543 | __metaclass__ = Meta
|
|---|
| 4544 | X.a = 42
|
|---|
| 4545 | Meta.a = Descr("a")
|
|---|
| 4546 | self.assertEqual(X.a, 42)
|
|---|
| 4547 |
|
|---|
| 4548 | def test_getattr_hooks(self):
|
|---|
| 4549 | # issue 4230
|
|---|
| 4550 |
|
|---|
| 4551 | class Descriptor(object):
|
|---|
| 4552 | counter = 0
|
|---|
| 4553 | def __get__(self, obj, objtype=None):
|
|---|
| 4554 | def getter(name):
|
|---|
| 4555 | self.counter += 1
|
|---|
| 4556 | raise AttributeError(name)
|
|---|
| 4557 | return getter
|
|---|
| 4558 |
|
|---|
| 4559 | descr = Descriptor()
|
|---|
| 4560 | class A(object):
|
|---|
| 4561 | __getattribute__ = descr
|
|---|
| 4562 | class B(object):
|
|---|
| 4563 | __getattr__ = descr
|
|---|
| 4564 | class C(object):
|
|---|
| 4565 | __getattribute__ = descr
|
|---|
| 4566 | __getattr__ = descr
|
|---|
| 4567 |
|
|---|
| 4568 | self.assertRaises(AttributeError, getattr, A(), "attr")
|
|---|
| 4569 | self.assertEqual(descr.counter, 1)
|
|---|
| 4570 | self.assertRaises(AttributeError, getattr, B(), "attr")
|
|---|
| 4571 | self.assertEqual(descr.counter, 2)
|
|---|
| 4572 | self.assertRaises(AttributeError, getattr, C(), "attr")
|
|---|
| 4573 | self.assertEqual(descr.counter, 4)
|
|---|
| 4574 |
|
|---|
| 4575 | class EvilGetattribute(object):
|
|---|
| 4576 | # This used to segfault
|
|---|
| 4577 | def __getattr__(self, name):
|
|---|
| 4578 | raise AttributeError(name)
|
|---|
| 4579 | def __getattribute__(self, name):
|
|---|
| 4580 | del EvilGetattribute.__getattr__
|
|---|
| 4581 | for i in range(5):
|
|---|
| 4582 | gc.collect()
|
|---|
| 4583 | raise AttributeError(name)
|
|---|
| 4584 |
|
|---|
| 4585 | self.assertRaises(AttributeError, getattr, EvilGetattribute(), "attr")
|
|---|
| 4586 |
|
|---|
| 4587 | def test_type___getattribute__(self):
|
|---|
| 4588 | self.assertRaises(TypeError, type.__getattribute__, list, type)
|
|---|
| 4589 |
|
|---|
| 4590 | def test_abstractmethods(self):
|
|---|
| 4591 | # type pretends not to have __abstractmethods__.
|
|---|
| 4592 | self.assertRaises(AttributeError, getattr, type, "__abstractmethods__")
|
|---|
| 4593 | class meta(type):
|
|---|
| 4594 | pass
|
|---|
| 4595 | self.assertRaises(AttributeError, getattr, meta, "__abstractmethods__")
|
|---|
| 4596 | class X(object):
|
|---|
| 4597 | pass
|
|---|
| 4598 | with self.assertRaises(AttributeError):
|
|---|
| 4599 | del X.__abstractmethods__
|
|---|
| 4600 |
|
|---|
| 4601 | def test_proxy_call(self):
|
|---|
| 4602 | class FakeStr(object):
|
|---|
| 4603 | __class__ = str
|
|---|
| 4604 |
|
|---|
| 4605 | fake_str = FakeStr()
|
|---|
| 4606 | # isinstance() reads __class__ on new style classes
|
|---|
| 4607 | self.assertTrue(isinstance(fake_str, str))
|
|---|
| 4608 |
|
|---|
| 4609 | # call a method descriptor
|
|---|
| 4610 | with self.assertRaises(TypeError):
|
|---|
| 4611 | str.split(fake_str)
|
|---|
| 4612 |
|
|---|
| 4613 | # call a slot wrapper descriptor
|
|---|
| 4614 | with self.assertRaises(TypeError):
|
|---|
| 4615 | str.__add__(fake_str, "abc")
|
|---|
| 4616 |
|
|---|
| 4617 | def test_repr_as_str(self):
|
|---|
| 4618 | # Issue #11603: crash or infinite loop when rebinding __str__ as
|
|---|
| 4619 | # __repr__.
|
|---|
| 4620 | class Foo(object):
|
|---|
| 4621 | pass
|
|---|
| 4622 | Foo.__repr__ = Foo.__str__
|
|---|
| 4623 | foo = Foo()
|
|---|
| 4624 | self.assertRaises(RuntimeError, str, foo)
|
|---|
| 4625 | self.assertRaises(RuntimeError, repr, foo)
|
|---|
| 4626 |
|
|---|
| 4627 | def test_mixing_slot_wrappers(self):
|
|---|
| 4628 | class X(dict):
|
|---|
| 4629 | __setattr__ = dict.__setitem__
|
|---|
| 4630 | x = X()
|
|---|
| 4631 | x.y = 42
|
|---|
| 4632 | self.assertEqual(x["y"], 42)
|
|---|
| 4633 |
|
|---|
| 4634 | def test_cycle_through_dict(self):
|
|---|
| 4635 | # See bug #1469629
|
|---|
| 4636 | class X(dict):
|
|---|
| 4637 | def __init__(self):
|
|---|
| 4638 | dict.__init__(self)
|
|---|
| 4639 | self.__dict__ = self
|
|---|
| 4640 | x = X()
|
|---|
| 4641 | x.attr = 42
|
|---|
| 4642 | wr = weakref.ref(x)
|
|---|
| 4643 | del x
|
|---|
| 4644 | test_support.gc_collect()
|
|---|
| 4645 | self.assertIsNone(wr())
|
|---|
| 4646 | for o in gc.get_objects():
|
|---|
| 4647 | self.assertIsNot(type(o), X)
|
|---|
| 4648 |
|
|---|
| 4649 | class DictProxyTests(unittest.TestCase):
|
|---|
| 4650 | def setUp(self):
|
|---|
| 4651 | class C(object):
|
|---|
| 4652 | def meth(self):
|
|---|
| 4653 | pass
|
|---|
| 4654 | self.C = C
|
|---|
| 4655 |
|
|---|
| 4656 | def test_repr(self):
|
|---|
| 4657 | self.assertIn('dict_proxy({', repr(vars(self.C)))
|
|---|
| 4658 | self.assertIn("'meth':", repr(vars(self.C)))
|
|---|
| 4659 |
|
|---|
| 4660 | def test_iter_keys(self):
|
|---|
| 4661 | # Testing dict-proxy iterkeys...
|
|---|
| 4662 | keys = [ key for key in self.C.__dict__.iterkeys() ]
|
|---|
| 4663 | keys.sort()
|
|---|
| 4664 | self.assertEqual(keys, ['__dict__', '__doc__', '__module__',
|
|---|
| 4665 | '__weakref__', 'meth'])
|
|---|
| 4666 |
|
|---|
| 4667 | def test_iter_values(self):
|
|---|
| 4668 | # Testing dict-proxy itervalues...
|
|---|
| 4669 | values = [ values for values in self.C.__dict__.itervalues() ]
|
|---|
| 4670 | self.assertEqual(len(values), 5)
|
|---|
| 4671 |
|
|---|
| 4672 | def test_iter_items(self):
|
|---|
| 4673 | # Testing dict-proxy iteritems...
|
|---|
| 4674 | keys = [ key for (key, value) in self.C.__dict__.iteritems() ]
|
|---|
| 4675 | keys.sort()
|
|---|
| 4676 | self.assertEqual(keys, ['__dict__', '__doc__', '__module__',
|
|---|
| 4677 | '__weakref__', 'meth'])
|
|---|
| 4678 |
|
|---|
| 4679 | def test_dict_type_with_metaclass(self):
|
|---|
| 4680 | # Testing type of __dict__ when __metaclass__ set...
|
|---|
| 4681 | class B(object):
|
|---|
| 4682 | pass
|
|---|
| 4683 | class M(type):
|
|---|
| 4684 | pass
|
|---|
| 4685 | class C:
|
|---|
| 4686 | # In 2.3a1, C.__dict__ was a real dict rather than a dict proxy
|
|---|
| 4687 | __metaclass__ = M
|
|---|
| 4688 | self.assertEqual(type(C.__dict__), type(B.__dict__))
|
|---|
| 4689 |
|
|---|
| 4690 |
|
|---|
| 4691 | class PTypesLongInitTest(unittest.TestCase):
|
|---|
| 4692 | # This is in its own TestCase so that it can be run before any other tests.
|
|---|
| 4693 | def test_pytype_long_ready(self):
|
|---|
| 4694 | # Testing SF bug 551412 ...
|
|---|
| 4695 |
|
|---|
| 4696 | # This dumps core when SF bug 551412 isn't fixed --
|
|---|
| 4697 | # but only when test_descr.py is run separately.
|
|---|
| 4698 | # (That can't be helped -- as soon as PyType_Ready()
|
|---|
| 4699 | # is called for PyLong_Type, the bug is gone.)
|
|---|
| 4700 | class UserLong(object):
|
|---|
| 4701 | def __pow__(self, *args):
|
|---|
| 4702 | pass
|
|---|
| 4703 | try:
|
|---|
| 4704 | pow(0L, UserLong(), 0L)
|
|---|
| 4705 | except:
|
|---|
| 4706 | pass
|
|---|
| 4707 |
|
|---|
| 4708 | # Another segfault only when run early
|
|---|
| 4709 | # (before PyType_Ready(tuple) is called)
|
|---|
| 4710 | type.mro(tuple)
|
|---|
| 4711 |
|
|---|
| 4712 |
|
|---|
| 4713 | def test_main():
|
|---|
| 4714 | deprecations = [(r'complex divmod\(\), // and % are deprecated$',
|
|---|
| 4715 | DeprecationWarning)]
|
|---|
| 4716 | if sys.py3kwarning:
|
|---|
| 4717 | deprecations += [
|
|---|
| 4718 | ("classic (int|long) division", DeprecationWarning),
|
|---|
| 4719 | ("coerce.. not supported", DeprecationWarning),
|
|---|
| 4720 | (".+__(get|set|del)slice__ has been removed", DeprecationWarning)]
|
|---|
| 4721 | with test_support.check_warnings(*deprecations):
|
|---|
| 4722 | # Run all local test cases, with PTypesLongInitTest first.
|
|---|
| 4723 | test_support.run_unittest(PTypesLongInitTest, OperatorsTest,
|
|---|
| 4724 | ClassPropertiesAndMethods, DictProxyTests)
|
|---|
| 4725 |
|
|---|
| 4726 | if __name__ == "__main__":
|
|---|
| 4727 | test_main()
|
|---|
