source: vendor/perl/5.8.8/lib/File/DosGlob.t

#!./perl

#
# test glob() in File::DosGlob
#

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
}

print "1..10\n";

# override it in main::
use File::DosGlob 'glob';

# test if $_ takes as the default
my $expected;
if ($^O eq 'MacOS') {
    $expected = $_ = ":op:a*.t";
} else {
    $expected = $_ = "op/a*.t";
}
my @r = glob;
print "not " if $_ ne $expected;
print "ok 1\n";
print "# |@r|\nnot " if @r < 9;
print "ok 2\n";

# check if <*/*> works
if ($^O eq 'MacOS') {
    @r = <:*:a*.t>;
} else {
    @r = <*/a*.t>;
}
# atleast {argv,abbrev,anydbm,autoloader,append,arith,array,assignwarn,auto}.t
print "# |@r|\nnot " if @r < 9;
print "ok 3\n";
my $r = scalar @r;

# check if scalar context works
@r = ();
while (defined($_ = ($^O eq 'MacOS') ? <:*:a*.t> : <*/a*.t>)) {
    print "# $_\n";
    push @r, $_;
}
print "not " if @r != $r;
print "ok 4\n";

# check if list context works
@r = ();
if ($^O eq 'MacOS') {
    for (<:*:a*.t>) {
        print "# $_\n";
        push @r, $_;
    }
} else {
    for (<*/a*.t>) {
        print "# $_\n";
        push @r, $_;
    }
}
print "not " if @r != $r;
print "ok 5\n";

# test if implicit assign to $_ in while() works
@r = ();
if ($^O eq 'MacOS') {
    while (<:*:a*.t>) {
        print "# $_\n";
        push @r, $_;
    }
} else {
    while (<*/a*.t>) {
        print "# $_\n";
        push @r, $_;
    }
}
print "not " if @r != $r;
print "ok 6\n";

# test if explicit glob() gets assign magic too
my @s = ();
my $pat = ($^O eq 'MacOS') ? ':*:a*.t': '*/a*.t';
while (glob ($pat)) {
    print "# $_\n";
    push @s, $_;
}
print "not " if "@r" ne "@s";
print "ok 7\n";

# how about in a different package, like?
package Foo;
use File::DosGlob 'glob';
@s = ();
$pat = $^O eq 'MacOS' ? ':*:a*.t' : '*/a*.t';
while (glob($pat)) {
    print "# $_\n";
    push @s, $_;
}
print "not " if "@r" ne "@s";
print "ok 8\n";

# test if different glob ops maintain independent contexts
@s = ();
if ($^O eq 'MacOS') {
    while (<:*:a*.t>) {
        my $i = 0;
        print "# $_ <";
        push @s, $_;
        while (<:*:b*.t>) {
            print " $_";
            $i++;
        }
        print " >\n";
    }
} else {
    while (<*/a*.t>) {
        my $i = 0;
        print "# $_ <";
        push @s, $_;
        while (<*/b*.t>) {
            print " $_";
            $i++;
        }
        print " >\n";
    }
}
print "not " if "@r" ne "@s";
print "ok 9\n";

# how about a global override, hm?
eval <<'EOT';
use File::DosGlob 'GLOBAL_glob';
package Bar;
@s = ();
if ($^O eq 'MacOS') {
    while (<:*:a*.t>) {
        my $i = 0;
        print "# $_ <";
        push @s, $_;
        while (glob ':*:b*.t') {
            print " $_";
            $i++;
        }
        print " >\n";
    }
} else {
    while (<*/a*.t>) {
        my $i = 0;
        print "# $_ <";
        push @s, $_;
        while (glob '*/b*.t') {
            print " $_";
            $i++;
        }
        print " >\n";
    }
}
print "not " if "@r" ne "@s";
print "ok 10\n";
EOT