source: python/trunk/Lib/test/test_time.py

Last change on this file was 391, checked in by dmik, 11 years ago

python: Merge vendor 2.7.6 to trunk.
  • Property svn:eol-style set to native
File size: 10.2 KB
Line 
1from test import test_support
2import time
3import unittest
4import sys
5
6
7class TimeTestCase(unittest.TestCase):
8
9 def setUp(self):
10 self.t = time.time()
11
12 def test_data_attributes(self):
13 time.altzone
14 time.daylight
15 time.timezone
16 time.tzname
17
18 def test_clock(self):
19 time.clock()
20
21 def test_conversions(self):
22 self.assertTrue(time.ctime(self.t)
23 == time.asctime(time.localtime(self.t)))
24 self.assertTrue(long(time.mktime(time.localtime(self.t)))
25 == long(self.t))
26
27 def test_sleep(self):
28 time.sleep(1.2)
29
30 def test_strftime(self):
31 tt = time.gmtime(self.t)
32 for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
33 'j', 'm', 'M', 'p', 'S',
34 'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
35 format = ' %' + directive
36 try:
37 time.strftime(format, tt)
38 except ValueError:
39 self.fail('conversion specifier: %r failed.' % format)
40
41 # Issue #10762: Guard against invalid/non-supported format string
42 # so that Python don't crash (Windows crashes when the format string
43 # input to [w]strftime is not kosher.
44 if sys.platform.startswith('win'):
45 with self.assertRaises(ValueError):
46 time.strftime('%f')
47
48 def test_strftime_bounds_checking(self):
49 # Make sure that strftime() checks the bounds of the various parts
50 #of the time tuple (0 is valid for *all* values).
51
52 # Check year [1900, max(int)]
53 self.assertRaises(ValueError, time.strftime, '',
54 (1899, 1, 1, 0, 0, 0, 0, 1, -1))
55 if time.accept2dyear:
56 self.assertRaises(ValueError, time.strftime, '',
57 (-1, 1, 1, 0, 0, 0, 0, 1, -1))
58 self.assertRaises(ValueError, time.strftime, '',
59 (100, 1, 1, 0, 0, 0, 0, 1, -1))
60 # Check month [1, 12] + zero support
61 self.assertRaises(ValueError, time.strftime, '',
62 (1900, -1, 1, 0, 0, 0, 0, 1, -1))
63 self.assertRaises(ValueError, time.strftime, '',
64 (1900, 13, 1, 0, 0, 0, 0, 1, -1))
65 # Check day of month [1, 31] + zero support
66 self.assertRaises(ValueError, time.strftime, '',
67 (1900, 1, -1, 0, 0, 0, 0, 1, -1))
68 self.assertRaises(ValueError, time.strftime, '',
69 (1900, 1, 32, 0, 0, 0, 0, 1, -1))
70 # Check hour [0, 23]
71 self.assertRaises(ValueError, time.strftime, '',
72 (1900, 1, 1, -1, 0, 0, 0, 1, -1))
73 self.assertRaises(ValueError, time.strftime, '',
74 (1900, 1, 1, 24, 0, 0, 0, 1, -1))
75 # Check minute [0, 59]
76 self.assertRaises(ValueError, time.strftime, '',
77 (1900, 1, 1, 0, -1, 0, 0, 1, -1))
78 self.assertRaises(ValueError, time.strftime, '',
79 (1900, 1, 1, 0, 60, 0, 0, 1, -1))
80 # Check second [0, 61]
81 self.assertRaises(ValueError, time.strftime, '',
82 (1900, 1, 1, 0, 0, -1, 0, 1, -1))
83 # C99 only requires allowing for one leap second, but Python's docs say
84 # allow two leap seconds (0..61)
85 self.assertRaises(ValueError, time.strftime, '',
86 (1900, 1, 1, 0, 0, 62, 0, 1, -1))
87 # No check for upper-bound day of week;
88 # value forced into range by a ``% 7`` calculation.
89 # Start check at -2 since gettmarg() increments value before taking
90 # modulo.
91 self.assertRaises(ValueError, time.strftime, '',
92 (1900, 1, 1, 0, 0, 0, -2, 1, -1))
93 # Check day of the year [1, 366] + zero support
94 self.assertRaises(ValueError, time.strftime, '',
95 (1900, 1, 1, 0, 0, 0, 0, -1, -1))
96 self.assertRaises(ValueError, time.strftime, '',
97 (1900, 1, 1, 0, 0, 0, 0, 367, -1))
98
99 def test_default_values_for_zero(self):
100 # Make sure that using all zeros uses the proper default values.
101 # No test for daylight savings since strftime() does not change output
102 # based on its value.
103 expected = "2000 01 01 00 00 00 1 001"
104 result = time.strftime("%Y %m %d %H %M %S %w %j", (0,)*9)
105 self.assertEqual(expected, result)
106
107 def test_strptime(self):
108 # Should be able to go round-trip from strftime to strptime without
109 # raising an exception.
110 tt = time.gmtime(self.t)
111 for directive in ('a', 'A', 'b', 'B', 'c', 'd', 'H', 'I',
112 'j', 'm', 'M', 'p', 'S',
113 'U', 'w', 'W', 'x', 'X', 'y', 'Y', 'Z', '%'):
114 format = '%' + directive
115 strf_output = time.strftime(format, tt)
116 try:
117 time.strptime(strf_output, format)
118 except ValueError:
119 self.fail("conversion specifier %r failed with '%s' input." %
120 (format, strf_output))
121
122 def test_asctime(self):
123 time.asctime(time.gmtime(self.t))
124 self.assertRaises(TypeError, time.asctime, 0)
125 self.assertRaises(TypeError, time.asctime, ())
126 # XXX: Posix compiant asctime should refuse to convert
127 # year > 9999, but Linux implementation does not.
128 # self.assertRaises(ValueError, time.asctime,
129 # (12345, 1, 0, 0, 0, 0, 0, 0, 0))
130 # XXX: For now, just make sure we don't have a crash:
131 try:
132 time.asctime((12345, 1, 1, 0, 0, 0, 0, 1, 0))
133 except ValueError:
134 pass
135
136 @unittest.skipIf(not hasattr(time, "tzset"),
137 "time module has no attribute tzset")
138 def test_tzset(self):
139
140 from os import environ
141
142 # Epoch time of midnight Dec 25th 2002. Never DST in northern
143 # hemisphere.
144 xmas2002 = 1040774400.0
145
146 # These formats are correct for 2002, and possibly future years
147 # This format is the 'standard' as documented at:
148 # http://www.opengroup.org/onlinepubs/007904975/basedefs/xbd_chap08.html
149 # They are also documented in the tzset(3) man page on most Unix
150 # systems.
151 eastern = 'EST+05EDT,M4.1.0,M10.5.0'
152 victoria = 'AEST-10AEDT-11,M10.5.0,M3.5.0'
153 utc='UTC+0'
154
155 org_TZ = environ.get('TZ',None)
156 try:
157 # Make sure we can switch to UTC time and results are correct
158 # Note that unknown timezones default to UTC.
159 # Note that altzone is undefined in UTC, as there is no DST
160 environ['TZ'] = eastern
161 time.tzset()
162 environ['TZ'] = utc
163 time.tzset()
164 self.assertEqual(
165 time.gmtime(xmas2002), time.localtime(xmas2002)
166 )
167 self.assertEqual(time.daylight, 0)
168 self.assertEqual(time.timezone, 0)
169 self.assertEqual(time.localtime(xmas2002).tm_isdst, 0)
170
171 # Make sure we can switch to US/Eastern
172 environ['TZ'] = eastern
173 time.tzset()
174 self.assertNotEqual(time.gmtime(xmas2002), time.localtime(xmas2002))
175 self.assertEqual(time.tzname, ('EST', 'EDT'))
176 self.assertEqual(len(time.tzname), 2)
177 self.assertEqual(time.daylight, 1)
178 self.assertEqual(time.timezone, 18000)
179 self.assertEqual(time.altzone, 14400)
180 self.assertEqual(time.localtime(xmas2002).tm_isdst, 0)
181 self.assertEqual(len(time.tzname), 2)
182
183 # Now go to the southern hemisphere.
184 environ['TZ'] = victoria
185 time.tzset()
186 self.assertNotEqual(time.gmtime(xmas2002), time.localtime(xmas2002))
187
188 # Issue #11886: Australian Eastern Standard Time (UTC+10) is called
189 # "EST" (as Eastern Standard Time, UTC-5) instead of "AEST" on some
190 # operating systems (e.g. FreeBSD), which is wrong. See for example
191 # this bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=93810
192 self.assertIn(time.tzname[0], ('AEST' 'EST'), time.tzname[0])
193 self.assertTrue(time.tzname[1] == 'AEDT', str(time.tzname[1]))
194 self.assertEqual(len(time.tzname), 2)
195 self.assertEqual(time.daylight, 1)
196 self.assertEqual(time.timezone, -36000)
197 self.assertEqual(time.altzone, -39600)
198 self.assertEqual(time.localtime(xmas2002).tm_isdst, 1)
199
200 finally:
201 # Repair TZ environment variable in case any other tests
202 # rely on it.
203 if org_TZ is not None:
204 environ['TZ'] = org_TZ
205 elif environ.has_key('TZ'):
206 del environ['TZ']
207 time.tzset()
208
209 def test_insane_timestamps(self):
210 # It's possible that some platform maps time_t to double,
211 # and that this test will fail there. This test should
212 # exempt such platforms (provided they return reasonable
213 # results!).
214 for func in time.ctime, time.gmtime, time.localtime:
215 for unreasonable in -1e200, 1e200:
216 self.assertRaises(ValueError, func, unreasonable)
217
218 def test_ctime_without_arg(self):
219 # Not sure how to check the values, since the clock could tick
220 # at any time. Make sure these are at least accepted and
221 # don't raise errors.
222 time.ctime()
223 time.ctime(None)
224
225 def test_gmtime_without_arg(self):
226 gt0 = time.gmtime()
227 gt1 = time.gmtime(None)
228 t0 = time.mktime(gt0)
229 t1 = time.mktime(gt1)
230 self.assertTrue(0 <= (t1-t0) < 0.2)
231
232 def test_localtime_without_arg(self):
233 lt0 = time.localtime()
234 lt1 = time.localtime(None)
235 t0 = time.mktime(lt0)
236 t1 = time.mktime(lt1)
237 self.assertTrue(0 <= (t1-t0) < 0.2)
238
239 def test_mktime(self):
240 # Issue #1726687
241 for t in (-2, -1, 0, 1):
242 try:
243 tt = time.localtime(t)
244 except (OverflowError, ValueError):
245 pass
246 else:
247 self.assertEqual(time.mktime(tt), t)
248
249
250def test_main():
251 test_support.run_unittest(TimeTestCase)
252
253
254if __name__ == "__main__":
255 test_main()
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