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b1b4c790e7
In translate(), generate unique group names across calls. The restores the undocumented ability to get a valid regexp by joining multiple translate() results via `|`.
175 lines
6.8 KiB
Python
175 lines
6.8 KiB
Python
"""Test cases for the fnmatch module."""
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import unittest
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import os
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import warnings
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from fnmatch import fnmatch, fnmatchcase, translate, filter
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class FnmatchTestCase(unittest.TestCase):
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def check_match(self, filename, pattern, should_match=True, fn=fnmatch):
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if should_match:
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self.assertTrue(fn(filename, pattern),
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"expected %r to match pattern %r"
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% (filename, pattern))
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else:
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self.assertFalse(fn(filename, pattern),
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"expected %r not to match pattern %r"
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% (filename, pattern))
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def test_fnmatch(self):
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check = self.check_match
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check('abc', 'abc')
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check('abc', '?*?')
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check('abc', '???*')
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check('abc', '*???')
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check('abc', '???')
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check('abc', '*')
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check('abc', 'ab[cd]')
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check('abc', 'ab[!de]')
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check('abc', 'ab[de]', False)
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check('a', '??', False)
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check('a', 'b', False)
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# these test that '\' is handled correctly in character sets;
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# see SF bug #409651
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check('\\', r'[\]')
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check('a', r'[!\]')
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check('\\', r'[!\]', False)
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# test that filenames with newlines in them are handled correctly.
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# http://bugs.python.org/issue6665
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check('foo\nbar', 'foo*')
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check('foo\nbar\n', 'foo*')
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check('\nfoo', 'foo*', False)
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check('\n', '*')
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def test_slow_fnmatch(self):
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check = self.check_match
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check('a' * 50, '*a*a*a*a*a*a*a*a*a*a')
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# The next "takes forever" if the regexp translation is
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# straightforward. See bpo-40480.
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check('a' * 50 + 'b', '*a*a*a*a*a*a*a*a*a*a', False)
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def test_mix_bytes_str(self):
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self.assertRaises(TypeError, fnmatch, 'test', b'*')
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self.assertRaises(TypeError, fnmatch, b'test', '*')
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self.assertRaises(TypeError, fnmatchcase, 'test', b'*')
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self.assertRaises(TypeError, fnmatchcase, b'test', '*')
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def test_fnmatchcase(self):
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check = self.check_match
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check('abc', 'abc', True, fnmatchcase)
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check('AbC', 'abc', False, fnmatchcase)
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check('abc', 'AbC', False, fnmatchcase)
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check('AbC', 'AbC', True, fnmatchcase)
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check('usr/bin', 'usr/bin', True, fnmatchcase)
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check('usr\\bin', 'usr/bin', False, fnmatchcase)
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check('usr/bin', 'usr\\bin', False, fnmatchcase)
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check('usr\\bin', 'usr\\bin', True, fnmatchcase)
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def test_bytes(self):
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self.check_match(b'test', b'te*')
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self.check_match(b'test\xff', b'te*\xff')
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self.check_match(b'foo\nbar', b'foo*')
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def test_case(self):
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ignorecase = os.path.normcase('ABC') == os.path.normcase('abc')
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check = self.check_match
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check('abc', 'abc')
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check('AbC', 'abc', ignorecase)
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check('abc', 'AbC', ignorecase)
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check('AbC', 'AbC')
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def test_sep(self):
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normsep = os.path.normcase('\\') == os.path.normcase('/')
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check = self.check_match
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check('usr/bin', 'usr/bin')
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check('usr\\bin', 'usr/bin', normsep)
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check('usr/bin', 'usr\\bin', normsep)
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check('usr\\bin', 'usr\\bin')
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def test_warnings(self):
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with warnings.catch_warnings():
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warnings.simplefilter('error', Warning)
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check = self.check_match
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check('[', '[[]')
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check('&', '[a&&b]')
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check('|', '[a||b]')
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check('~', '[a~~b]')
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check(',', '[a-z+--A-Z]')
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check('.', '[a-z--/A-Z]')
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class TranslateTestCase(unittest.TestCase):
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def test_translate(self):
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import re
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self.assertEqual(translate('*'), r'(?s:.*)\Z')
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self.assertEqual(translate('?'), r'(?s:.)\Z')
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self.assertEqual(translate('a?b*'), r'(?s:a.b.*)\Z')
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self.assertEqual(translate('[abc]'), r'(?s:[abc])\Z')
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self.assertEqual(translate('[]]'), r'(?s:[]])\Z')
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self.assertEqual(translate('[!x]'), r'(?s:[^x])\Z')
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self.assertEqual(translate('[^x]'), r'(?s:[\^x])\Z')
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self.assertEqual(translate('[x'), r'(?s:\[x)\Z')
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# from the docs
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self.assertEqual(translate('*.txt'), r'(?s:.*\.txt)\Z')
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# squash consecutive stars
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self.assertEqual(translate('*********'), r'(?s:.*)\Z')
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self.assertEqual(translate('A*********'), r'(?s:A.*)\Z')
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self.assertEqual(translate('*********A'), r'(?s:.*A)\Z')
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self.assertEqual(translate('A*********?[?]?'), r'(?s:A.*.[?].)\Z')
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# fancy translation to prevent exponential-time match failure
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t = translate('**a*a****a')
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digits = re.findall(r'\d+', t)
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self.assertEqual(len(digits), 4)
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self.assertEqual(digits[0], digits[1])
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self.assertEqual(digits[2], digits[3])
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g1 = f"g{digits[0]}" # e.g., group name "g4"
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g2 = f"g{digits[2]}" # e.g., group name "g5"
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self.assertEqual(t,
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fr'(?s:(?=(?P<{g1}>.*?a))(?P={g1})(?=(?P<{g2}>.*?a))(?P={g2}).*a)\Z')
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# and try pasting multiple translate results - it's an undocumented
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# feature that this works; all the pain of generating unique group
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# names across calls exists to support this
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r1 = translate('**a**a**a*')
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r2 = translate('**b**b**b*')
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r3 = translate('*c*c*c*')
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fatre = "|".join([r1, r2, r3])
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self.assertTrue(re.match(fatre, 'abaccad'))
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self.assertTrue(re.match(fatre, 'abxbcab'))
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self.assertTrue(re.match(fatre, 'cbabcaxc'))
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self.assertFalse(re.match(fatre, 'dabccbad'))
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class FilterTestCase(unittest.TestCase):
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def test_filter(self):
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self.assertEqual(filter(['Python', 'Ruby', 'Perl', 'Tcl'], 'P*'),
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['Python', 'Perl'])
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self.assertEqual(filter([b'Python', b'Ruby', b'Perl', b'Tcl'], b'P*'),
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[b'Python', b'Perl'])
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def test_mix_bytes_str(self):
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self.assertRaises(TypeError, filter, ['test'], b'*')
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self.assertRaises(TypeError, filter, [b'test'], '*')
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def test_case(self):
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ignorecase = os.path.normcase('P') == os.path.normcase('p')
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self.assertEqual(filter(['Test.py', 'Test.rb', 'Test.PL'], '*.p*'),
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['Test.py', 'Test.PL'] if ignorecase else ['Test.py'])
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self.assertEqual(filter(['Test.py', 'Test.rb', 'Test.PL'], '*.P*'),
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['Test.py', 'Test.PL'] if ignorecase else ['Test.PL'])
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def test_sep(self):
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normsep = os.path.normcase('\\') == os.path.normcase('/')
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self.assertEqual(filter(['usr/bin', 'usr', 'usr\\lib'], 'usr/*'),
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['usr/bin', 'usr\\lib'] if normsep else ['usr/bin'])
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self.assertEqual(filter(['usr/bin', 'usr', 'usr\\lib'], 'usr\\*'),
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['usr/bin', 'usr\\lib'] if normsep else ['usr\\lib'])
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if __name__ == "__main__":
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unittest.main()
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