| 1 | #!/usr/bin/env python2
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| 2 | """
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| 3 | glob_test.py: Tests for glob.py
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| 4 | """
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| 5 | from __future__ import print_function
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| 6 |
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| 7 | import re
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| 8 | import unittest
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| 9 |
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| 10 | from frontend import match
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| 11 | from osh import glob_
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| 12 |
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| 13 |
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| 14 | class GlobEscapeTest(unittest.TestCase):
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| 15 |
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| 16 | def testEscapeUnescape(self):
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| 17 | esc = glob_.GlobEscape
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| 18 | unesc = glob_.GlobUnescape
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| 19 |
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| 20 | pairs = [
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| 21 | (r'\*.py', '*.py'),
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| 22 | (r'\?.py', '?.py'),
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| 23 | (r'\[a\-z\]\[\[\:punct\:\]\]', '[a-z][[:punct:]]'),
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| 24 | (r'\\n', r'\n'),
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| 25 | ]
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| 26 | for e, u in pairs:
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| 27 | self.assertEqual(e, esc(u))
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| 28 | self.assertEqual(u, unesc(e))
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| 29 |
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| 30 | def testGlobEscapingWithBackslash(self):
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| 31 | # This function doubles it
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| 32 | self.assertEqual('\\\\', glob_.GlobEscape('\\'))
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| 33 | self.assertEqual('\\', glob_.GlobUnescape('\\\\'))
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| 34 |
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| 35 | # This function chooses \@
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| 36 | self.assertEqual('\\@', glob_.GlobEscapeBackslash('\\'))
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| 37 | self.assertEqual('\\', glob_.GlobUnescapeBackslash('\\@'))
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| 38 |
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| 39 | def testLooksLikeGlob(self):
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| 40 | # The way to test bash behavior is:
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| 41 | # $ shopt -s nullglob; argv [ # not a glob
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| 42 | # $ shopt -s nullglob; argv [] # is a glob
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| 43 | # $ shopt -s nullglob; argv [][ # is a glob
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| 44 | CASES = [
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| 45 | (r'[]', True),
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| 46 | (r'[a]', True),
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| 47 | (r'[][', True),
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| 48 | (r'][', False), # no balanced pair
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| 49 | (r'\[]', False), # no balanced pair
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| 50 | (r'[', False), # no balanced pair
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| 51 | (r']', False), # no balanced pair
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| 52 | (r'echo', False),
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| 53 | (r'status=0', False),
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| 54 | (r'*', True),
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| 55 | (r'\*', False),
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| 56 | (r'\*.sh', False),
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| 57 | ('\\', False),
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| 58 | ('*\\', True),
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| 59 | ('?', True),
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| 60 | ]
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| 61 | for pat, expected in CASES:
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| 62 | self.assertEqual(expected, glob_.LooksLikeGlob(pat),
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| 63 | '%s: expected %r' % (pat, expected))
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| 64 |
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| 65 | def testGlobStripRegexes(self):
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| 66 | s = 'aabbccdd'
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| 67 |
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| 68 | # ${v%c*} # shortest suffix
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| 69 | m = re.match('^(.*)c.*$', s)
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| 70 | self.assertEqual('aabbc', m.group(1))
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| 71 |
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| 72 | # ${v%%c*} # longest suffix
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| 73 | m = re.match('^(.*?)c.*$', s)
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| 74 | self.assertEqual('aabb', m.group(1))
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| 75 |
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| 76 | # ${v#*b} # shortest prefix
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| 77 | m = re.match('^.*?b(.*)$', s)
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| 78 | self.assertEqual('bccdd', m.group(1))
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| 79 |
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| 80 | # ${v##*b} # longest prefix
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| 81 | m = re.match('^.*b(.*)$', s)
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| 82 | self.assertEqual('ccdd', m.group(1))
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| 83 |
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| 84 | def testPatSubRegexes(self):
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| 85 | # x=~/git/oils
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| 86 | # ${x//git*/X/}
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| 87 |
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| 88 | # git*
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| 89 | r1 = re.compile('git.*')
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| 90 | result = r1.sub('X', '~/git/oils')
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| 91 | self.assertEqual('~/X', result)
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| 92 |
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| 93 | r2 = re.compile('[a-z]')
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| 94 | result = r2.sub('X', 'a-b-c')
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| 95 | self.assertEqual('X-X-X', result)
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| 96 |
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| 97 | # Substitute the first one only
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| 98 | r2 = re.compile('[a-z]')
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| 99 | result = r2.sub('X', 'a-b-c', count=1)
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| 100 | self.assertEqual('X-b-c', result)
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| 101 |
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| 102 |
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| 103 | def _ReadTokens(s):
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| 104 | lex = match.GlobLexer(s)
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| 105 | return list(lex.Tokens())
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| 106 |
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| 107 |
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| 108 | class GlobParserTest(unittest.TestCase):
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| 109 |
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| 110 | def testGlobLexer(self):
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| 111 | print(_ReadTokens(''))
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| 112 | print(_ReadTokens('*.py'))
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| 113 | print(_ReadTokens(r'\*.py'))
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| 114 | print(_ReadTokens('[abc]'))
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| 115 | print(_ReadTokens('\\')) # Enf
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| 116 | print(_ReadTokens('\\x'))
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| 117 | print(_ReadTokens(r'\\'))
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| 118 | print(_ReadTokens(r'[[:alpha:]]'))
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| 119 | print(_ReadTokens(r'[?]'))
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| 120 |
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| 121 | def testGlobParser(self):
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| 122 | CASES = [
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| 123 | # (glob input, expected AST, expected extended regexp, has error)
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| 124 | ('*.py', r'.*\.py', False),
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| 125 | ('*.?', r'.*\..', False),
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| 126 | ('<*>', r'<.*>', False),
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| 127 | ('\**+', r'\*.*\+', False),
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| 128 | ('\**', r'\*.*', False),
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| 129 | ('*.[ch]pp', r'.*\.[ch]pp', False),
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| 130 |
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| 131 | # not globs
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| 132 | ('abc', 'abc', False),
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| 133 | ('\\*', '\\*', False),
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| 134 | ('c:\\foo', 'c:foo', False),
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| 135 | ('strange]one', 'strange\\]one', False),
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| 136 |
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| 137 | # character class globs
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| 138 | ('[[:space:]abc]', '[[:space:]abc]', False),
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| 139 | ('[abc]', '[abc]', False),
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| 140 | (r'[\a\b\c]', r'[\a\b\c]', False),
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| 141 | ('[abc\[]', r'[abc\[]', False),
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| 142 | ('[!not]', '[^not]', False),
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| 143 | ('[^also_not]', '[^also_not]', False),
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| 144 | ('[!*?!\\[]', '[^*?!\\[]', False),
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| 145 | ('[!\]foo]', r'[^]foo]', False),
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| 146 |
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| 147 | # invalid globs
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| 148 | ('not_closed[a-z', 'not_closed\\[a-z', True),
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| 149 | ('[[:spa[ce:]]', '\\[\\[:spa\\[ce:\\]\\]', True),
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| 150 |
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| 151 | # Regression test for IndexError.
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| 152 | ('[', '\\[', True),
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| 153 | ('\\', '\\\\', True),
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| 154 | (']', '\\]', False),
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| 155 | ]
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| 156 | for glob, expected_ere, expected_err in CASES:
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| 157 | print('===')
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| 158 | print(glob)
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| 159 | regex, warnings = glob_.GlobToERE(glob)
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| 160 | self.assertEqual(
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| 161 | expected_ere, regex, 'Expected %r to translate to %r, got %r' %
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| 162 | (glob, expected_ere, regex))
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| 163 |
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| 164 | print('regex : %s' % regex)
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| 165 | print('warnings: %s' % warnings)
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| 166 |
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| 167 |
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| 168 | if __name__ == '__main__':
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| 169 | unittest.main()
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