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 testLooksLikeGlob(self):
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31 | # The way to test bash behavior is:
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32 | # $ shopt -s nullglob; argv [ # not a glob
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33 | # $ shopt -s nullglob; argv [] # is a glob
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34 | # $ shopt -s nullglob; argv [][ # is a glob
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35 | CASES = [
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36 | (r'[]', True),
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37 | (r'[a]', True),
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38 | (r'[][', True),
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39 | (r'][', False), # no balanced pair
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40 | (r'\[]', False), # no balanced pair
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41 | (r'[', False), # no balanced pair
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42 | (r']', False), # no balanced pair
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43 | (r'echo', False),
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44 | (r'status=0', False),
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45 | (r'*', True),
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46 | (r'\*', False),
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47 | (r'\*.sh', False),
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48 | ('\\', False),
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49 | ('*\\', True),
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50 | ('?', True),
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51 | ]
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52 | for pat, expected in CASES:
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53 | self.assertEqual(expected, glob_.LooksLikeGlob(pat),
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54 | '%s: expected %r' % (pat, expected))
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55 |
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56 | def testGlobStripRegexes(self):
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57 | s = 'aabbccdd'
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58 |
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59 | # ${v%c*} # shortest suffix
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60 | m = re.match('^(.*)c.*$', s)
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61 | self.assertEqual('aabbc', m.group(1))
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62 |
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63 | # ${v%%c*} # longest suffix
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64 | m = re.match('^(.*?)c.*$', s)
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65 | self.assertEqual('aabb', m.group(1))
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66 |
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67 | # ${v#*b} # shortest prefix
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68 | m = re.match('^.*?b(.*)$', s)
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69 | self.assertEqual('bccdd', m.group(1))
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70 |
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71 | # ${v##*b} # longest prefix
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72 | m = re.match('^.*b(.*)$', s)
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73 | self.assertEqual('ccdd', m.group(1))
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74 |
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75 | def testPatSubRegexes(self):
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76 | # x=~/git/oil
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77 | # ${x//git*/X/}
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78 |
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79 | # git*
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80 | r1 = re.compile('git.*')
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81 | result = r1.sub('X', '~/git/oil')
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82 | self.assertEqual('~/X', result)
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83 |
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84 | r2 = re.compile('[a-z]')
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85 | result = r2.sub('X', 'a-b-c')
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86 | self.assertEqual('X-X-X', result)
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87 |
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88 | # Substitute the first one only
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89 | r2 = re.compile('[a-z]')
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90 | result = r2.sub('X', 'a-b-c', count=1)
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91 | self.assertEqual('X-b-c', result)
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92 |
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93 |
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94 | def _ReadTokens(s):
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95 | lex = match.GlobLexer(s)
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96 | return list(lex.Tokens())
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97 |
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98 |
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99 | class GlobParserTest(unittest.TestCase):
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100 |
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101 | def testGlobLexer(self):
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102 | print(_ReadTokens(''))
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103 | print(_ReadTokens('*.py'))
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104 | print(_ReadTokens(r'\*.py'))
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105 | print(_ReadTokens('[abc]'))
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106 | print(_ReadTokens('\\')) # Enf
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107 | print(_ReadTokens('\\x'))
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108 | print(_ReadTokens(r'\\'))
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109 | print(_ReadTokens(r'[[:alpha:]]'))
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110 | print(_ReadTokens(r'[?]'))
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111 |
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112 | def testGlobParser(self):
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113 | CASES = [
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114 | # (glob input, expected AST, expected extended regexp, has error)
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115 | ('*.py', r'.*\.py', False),
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116 | ('*.?', r'.*\..', False),
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117 | ('<*>', r'<.*>', False),
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118 | ('\**+', r'\*.*\+', False),
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119 | ('\**', r'\*.*', False),
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120 | ('*.[ch]pp', r'.*\.[ch]pp', False),
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121 |
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122 | # not globs
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123 | ('abc', 'abc', False),
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124 | ('\\*', '\\*', False),
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125 | ('c:\\foo', 'c:foo', False),
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126 | ('strange]one', 'strange\\]one', False),
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127 |
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128 | # character class globs
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129 | ('[[:space:]abc]', '[[:space:]abc]', False),
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130 | ('[abc]', '[abc]', False),
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131 | (r'[\a\b\c]', r'[\a\b\c]', False),
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132 | ('[abc\[]', r'[abc\[]', False),
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133 | ('[!not]', '[^not]', False),
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134 | ('[^also_not]', '[^also_not]', False),
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135 | ('[!*?!\\[]', '[^*?!\\[]', False),
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136 | ('[!\]foo]', r'[^]foo]', False),
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137 |
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138 | # invalid globs
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139 | ('not_closed[a-z', 'not_closed\\[a-z', True),
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140 | ('[[:spa[ce:]]', '\\[\\[:spa\\[ce:\\]\\]', True),
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141 |
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142 | # Regression test for IndexError.
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143 | ('[', '\\[', True),
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144 | ('\\', '\\\\', True),
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145 | (']', '\\]', False),
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146 | ]
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147 | for glob, expected_ere, expected_err in CASES:
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148 | print('===')
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149 | print(glob)
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150 | regex, warnings = glob_.GlobToERE(glob)
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151 | self.assertEqual(
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152 | expected_ere, regex, 'Expected %r to translate to %r, got %r' %
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153 | (glob, expected_ere, regex))
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154 |
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155 | print('regex : %s' % regex)
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156 | print('warnings: %s' % warnings)
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157 |
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158 |
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159 | if __name__ == '__main__':
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160 | unittest.main()
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