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1 import sys |
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2 sys.path = ['.'] + sys.path |
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3 |
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4 from test.test_support import verbose, run_unittest |
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5 import re |
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6 from re import Scanner |
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7 import sys, os, traceback |
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8 from weakref import proxy |
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9 |
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10 # Misc tests from Tim Peters' re.doc |
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11 |
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12 # WARNING: Don't change details in these tests if you don't know |
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13 # what you're doing. Some of these tests were carefuly modeled to |
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14 # cover most of the code. |
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15 |
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16 import unittest |
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17 |
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18 class ReTests(unittest.TestCase): |
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19 |
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20 def test_weakref(self): |
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21 s = 'QabbbcR' |
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22 x = re.compile('ab+c') |
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23 y = proxy(x) |
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24 self.assertEqual(x.findall('QabbbcR'), y.findall('QabbbcR')) |
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25 |
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26 def test_search_star_plus(self): |
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27 self.assertEqual(re.search('x*', 'axx').span(0), (0, 0)) |
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28 self.assertEqual(re.search('x*', 'axx').span(), (0, 0)) |
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29 self.assertEqual(re.search('x+', 'axx').span(0), (1, 3)) |
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30 self.assertEqual(re.search('x+', 'axx').span(), (1, 3)) |
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31 self.assertEqual(re.search('x', 'aaa'), None) |
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32 self.assertEqual(re.match('a*', 'xxx').span(0), (0, 0)) |
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33 self.assertEqual(re.match('a*', 'xxx').span(), (0, 0)) |
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34 self.assertEqual(re.match('x*', 'xxxa').span(0), (0, 3)) |
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35 self.assertEqual(re.match('x*', 'xxxa').span(), (0, 3)) |
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36 self.assertEqual(re.match('a+', 'xxx'), None) |
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37 |
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38 def bump_num(self, matchobj): |
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39 int_value = int(matchobj.group(0)) |
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40 return str(int_value + 1) |
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41 |
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42 def test_basic_re_sub(self): |
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43 self.assertEqual(re.sub("(?i)b+", "x", "bbbb BBBB"), 'x x') |
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44 self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y'), |
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45 '9.3 -3 24x100y') |
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46 self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3), |
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47 '9.3 -3 23x99y') |
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48 |
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49 self.assertEqual(re.sub('.', lambda m: r"\n", 'x'), '\\n') |
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50 self.assertEqual(re.sub('.', r"\n", 'x'), '\n') |
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51 |
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52 s = r"\1\1" |
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53 self.assertEqual(re.sub('(.)', s, 'x'), 'xx') |
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54 self.assertEqual(re.sub('(.)', re.escape(s), 'x'), s) |
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55 self.assertEqual(re.sub('(.)', lambda m: s, 'x'), s) |
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56 |
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57 self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<a>', 'xx'), 'xxxx') |
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58 self.assertEqual(re.sub('(?P<a>x)', '\g<a>\g<1>', 'xx'), 'xxxx') |
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59 self.assertEqual(re.sub('(?P<unk>x)', '\g<unk>\g<unk>', 'xx'), 'xxxx') |
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60 self.assertEqual(re.sub('(?P<unk>x)', '\g<1>\g<1>', 'xx'), 'xxxx') |
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61 |
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62 self.assertEqual(re.sub('a',r'\t\n\v\r\f\a\b\B\Z\a\A\w\W\s\S\d\D','a'), |
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63 '\t\n\v\r\f\a\b\\B\\Z\a\\A\\w\\W\\s\\S\\d\\D') |
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64 self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'), '\t\n\v\r\f\a') |
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65 self.assertEqual(re.sub('a', '\t\n\v\r\f\a', 'a'), |
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66 (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7))) |
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67 |
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68 self.assertEqual(re.sub('^\s*', 'X', 'test'), 'Xtest') |
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69 |
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70 def test_bug_449964(self): |
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71 # fails for group followed by other escape |
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72 self.assertEqual(re.sub(r'(?P<unk>x)', '\g<1>\g<1>\\b', 'xx'), |
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73 'xx\bxx\b') |
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74 |
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75 def test_bug_449000(self): |
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76 # Test for sub() on escaped characters |
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77 self.assertEqual(re.sub(r'\r\n', r'\n', 'abc\r\ndef\r\n'), |
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78 'abc\ndef\n') |
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79 self.assertEqual(re.sub('\r\n', r'\n', 'abc\r\ndef\r\n'), |
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80 'abc\ndef\n') |
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81 self.assertEqual(re.sub(r'\r\n', '\n', 'abc\r\ndef\r\n'), |
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82 'abc\ndef\n') |
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83 self.assertEqual(re.sub('\r\n', '\n', 'abc\r\ndef\r\n'), |
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84 'abc\ndef\n') |
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85 |
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86 def test_bug_1140(self): |
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87 # re.sub(x, y, u'') should return u'', not '', and |
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88 # re.sub(x, y, '') should return '', not u''. |
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89 # Also: |
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90 # re.sub(x, y, unicode(x)) should return unicode(y), and |
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91 # re.sub(x, y, str(x)) should return |
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92 # str(y) if isinstance(y, str) else unicode(y). |
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93 for x in 'x', u'x': |
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94 for y in 'y', u'y': |
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95 z = re.sub(x, y, u'') |
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96 self.assertEqual(z, u'') |
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97 self.assertEqual(type(z), unicode) |
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98 # |
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99 z = re.sub(x, y, '') |
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100 self.assertEqual(z, '') |
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101 self.assertEqual(type(z), str) |
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102 # |
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103 z = re.sub(x, y, unicode(x)) |
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104 self.assertEqual(z, y) |
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105 self.assertEqual(type(z), unicode) |
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106 # |
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107 z = re.sub(x, y, str(x)) |
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108 self.assertEqual(z, y) |
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109 self.assertEqual(type(z), type(y)) |
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110 |
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111 def test_sub_template_numeric_escape(self): |
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112 # bug 776311 and friends |
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113 self.assertEqual(re.sub('x', r'\0', 'x'), '\0') |
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114 self.assertEqual(re.sub('x', r'\000', 'x'), '\000') |
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115 self.assertEqual(re.sub('x', r'\001', 'x'), '\001') |
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116 self.assertEqual(re.sub('x', r'\008', 'x'), '\0' + '8') |
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117 self.assertEqual(re.sub('x', r'\009', 'x'), '\0' + '9') |
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118 self.assertEqual(re.sub('x', r'\111', 'x'), '\111') |
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119 self.assertEqual(re.sub('x', r'\117', 'x'), '\117') |
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120 |
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121 self.assertEqual(re.sub('x', r'\1111', 'x'), '\1111') |
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122 self.assertEqual(re.sub('x', r'\1111', 'x'), '\111' + '1') |
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123 |
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124 self.assertEqual(re.sub('x', r'\00', 'x'), '\x00') |
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125 self.assertEqual(re.sub('x', r'\07', 'x'), '\x07') |
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126 self.assertEqual(re.sub('x', r'\08', 'x'), '\0' + '8') |
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127 self.assertEqual(re.sub('x', r'\09', 'x'), '\0' + '9') |
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128 self.assertEqual(re.sub('x', r'\0a', 'x'), '\0' + 'a') |
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129 |
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130 self.assertEqual(re.sub('x', r'\400', 'x'), '\0') |
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131 self.assertEqual(re.sub('x', r'\777', 'x'), '\377') |
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132 |
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133 self.assertRaises(re.error, re.sub, 'x', r'\1', 'x') |
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134 self.assertRaises(re.error, re.sub, 'x', r'\8', 'x') |
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135 self.assertRaises(re.error, re.sub, 'x', r'\9', 'x') |
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136 self.assertRaises(re.error, re.sub, 'x', r'\11', 'x') |
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137 self.assertRaises(re.error, re.sub, 'x', r'\18', 'x') |
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138 self.assertRaises(re.error, re.sub, 'x', r'\1a', 'x') |
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139 self.assertRaises(re.error, re.sub, 'x', r'\90', 'x') |
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140 self.assertRaises(re.error, re.sub, 'x', r'\99', 'x') |
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141 self.assertRaises(re.error, re.sub, 'x', r'\118', 'x') # r'\11' + '8' |
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142 self.assertRaises(re.error, re.sub, 'x', r'\11a', 'x') |
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143 self.assertRaises(re.error, re.sub, 'x', r'\181', 'x') # r'\18' + '1' |
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144 self.assertRaises(re.error, re.sub, 'x', r'\800', 'x') # r'\80' + '0' |
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145 |
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146 # in python2.3 (etc), these loop endlessly in sre_parser.py |
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147 self.assertEqual(re.sub('(((((((((((x)))))))))))', r'\11', 'x'), 'x') |
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148 self.assertEqual(re.sub('((((((((((y))))))))))(.)', r'\118', 'xyz'), |
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149 'xz8') |
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150 self.assertEqual(re.sub('((((((((((y))))))))))(.)', r'\11a', 'xyz'), |
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151 'xza') |
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152 |
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153 def test_qualified_re_sub(self): |
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154 self.assertEqual(re.sub('a', 'b', 'aaaaa'), 'bbbbb') |
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155 self.assertEqual(re.sub('a', 'b', 'aaaaa', 1), 'baaaa') |
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156 |
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157 def test_bug_114660(self): |
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158 self.assertEqual(re.sub(r'(\S)\s+(\S)', r'\1 \2', 'hello there'), |
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159 'hello there') |
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160 |
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161 def test_bug_462270(self): |
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162 # Test for empty sub() behaviour, see SF bug #462270 |
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163 self.assertEqual(re.sub('x*', '-', 'abxd'), '-a-b-d-') |
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164 self.assertEqual(re.sub('x+', '-', 'abxd'), 'ab-d') |
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165 |
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166 def test_symbolic_refs(self): |
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167 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a', 'xx') |
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168 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<', 'xx') |
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169 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g', 'xx') |
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170 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<a a>', 'xx') |
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171 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<1a1>', 'xx') |
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172 self.assertRaises(IndexError, re.sub, '(?P<a>x)', '\g<ab>', 'xx') |
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173 self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\g<b>', 'xx') |
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174 self.assertRaises(re.error, re.sub, '(?P<a>x)|(?P<b>y)', '\\2', 'xx') |
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175 self.assertRaises(re.error, re.sub, '(?P<a>x)', '\g<-1>', 'xx') |
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176 |
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177 def test_re_subn(self): |
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178 self.assertEqual(re.subn("(?i)b+", "x", "bbbb BBBB"), ('x x', 2)) |
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179 self.assertEqual(re.subn("b+", "x", "bbbb BBBB"), ('x BBBB', 1)) |
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180 self.assertEqual(re.subn("b+", "x", "xyz"), ('xyz', 0)) |
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181 self.assertEqual(re.subn("b*", "x", "xyz"), ('xxxyxzx', 4)) |
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182 self.assertEqual(re.subn("b*", "x", "xyz", 2), ('xxxyz', 2)) |
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183 |
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184 def test_re_split(self): |
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185 self.assertEqual(re.split(":", ":a:b::c"), ['', 'a', 'b', '', 'c']) |
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186 self.assertEqual(re.split(":*", ":a:b::c"), ['', 'a', 'b', 'c']) |
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187 self.assertEqual(re.split("(:*)", ":a:b::c"), |
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188 ['', ':', 'a', ':', 'b', '::', 'c']) |
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189 self.assertEqual(re.split("(?::*)", ":a:b::c"), ['', 'a', 'b', 'c']) |
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190 self.assertEqual(re.split("(:)*", ":a:b::c"), |
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191 ['', ':', 'a', ':', 'b', ':', 'c']) |
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192 self.assertEqual(re.split("([b:]+)", ":a:b::c"), |
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193 ['', ':', 'a', ':b::', 'c']) |
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194 self.assertEqual(re.split("(b)|(:+)", ":a:b::c"), |
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195 ['', None, ':', 'a', None, ':', '', 'b', None, '', |
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196 None, '::', 'c']) |
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197 self.assertEqual(re.split("(?:b)|(?::+)", ":a:b::c"), |
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198 ['', 'a', '', '', 'c']) |
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199 |
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200 def test_qualified_re_split(self): |
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201 self.assertEqual(re.split(":", ":a:b::c", 2), ['', 'a', 'b::c']) |
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202 self.assertEqual(re.split(':', 'a:b:c:d', 2), ['a', 'b', 'c:d']) |
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203 self.assertEqual(re.split("(:)", ":a:b::c", 2), |
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204 ['', ':', 'a', ':', 'b::c']) |
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205 self.assertEqual(re.split("(:*)", ":a:b::c", 2), |
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206 ['', ':', 'a', ':', 'b::c']) |
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207 |
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208 def test_re_findall(self): |
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209 self.assertEqual(re.findall(":+", "abc"), []) |
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210 self.assertEqual(re.findall(":+", "a:b::c:::d"), [":", "::", ":::"]) |
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211 self.assertEqual(re.findall("(:+)", "a:b::c:::d"), [":", "::", ":::"]) |
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212 self.assertEqual(re.findall("(:)(:*)", "a:b::c:::d"), [(":", ""), |
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213 (":", ":"), |
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214 (":", "::")]) |
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215 |
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216 def test_bug_117612(self): |
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217 self.assertEqual(re.findall(r"(a|(b))", "aba"), |
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218 [("a", ""),("b", "b"),("a", "")]) |
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219 |
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220 def test_re_match(self): |
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221 self.assertEqual(re.match('a', 'a').groups(), ()) |
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222 self.assertEqual(re.match('(a)', 'a').groups(), ('a',)) |
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223 self.assertEqual(re.match(r'(a)', 'a').group(0), 'a') |
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224 self.assertEqual(re.match(r'(a)', 'a').group(1), 'a') |
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225 self.assertEqual(re.match(r'(a)', 'a').group(1, 1), ('a', 'a')) |
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226 |
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227 pat = re.compile('((a)|(b))(c)?') |
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228 self.assertEqual(pat.match('a').groups(), ('a', 'a', None, None)) |
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229 self.assertEqual(pat.match('b').groups(), ('b', None, 'b', None)) |
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230 self.assertEqual(pat.match('ac').groups(), ('a', 'a', None, 'c')) |
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231 self.assertEqual(pat.match('bc').groups(), ('b', None, 'b', 'c')) |
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232 self.assertEqual(pat.match('bc').groups(""), ('b', "", 'b', 'c')) |
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233 |
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234 # A single group |
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235 m = re.match('(a)', 'a') |
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236 self.assertEqual(m.group(0), 'a') |
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237 self.assertEqual(m.group(0), 'a') |
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238 self.assertEqual(m.group(1), 'a') |
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239 self.assertEqual(m.group(1, 1), ('a', 'a')) |
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240 |
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241 pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?') |
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242 self.assertEqual(pat.match('a').group(1, 2, 3), ('a', None, None)) |
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243 self.assertEqual(pat.match('b').group('a1', 'b2', 'c3'), |
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244 (None, 'b', None)) |
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245 self.assertEqual(pat.match('ac').group(1, 'b2', 3), ('a', None, 'c')) |
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246 |
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247 def test_re_groupref_exists(self): |
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248 self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', '(a)').groups(), |
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249 ('(', 'a')) |
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250 self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', 'a').groups(), |
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251 (None, 'a')) |
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252 self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', 'a)'), None) |
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253 self.assertEqual(re.match('^(\()?([^()]+)(?(1)\))$', '(a'), None) |
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254 self.assertEqual(re.match('^(?:(a)|c)((?(1)b|d))$', 'ab').groups(), |
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255 ('a', 'b')) |
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256 self.assertEqual(re.match('^(?:(a)|c)((?(1)b|d))$', 'cd').groups(), |
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257 (None, 'd')) |
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258 self.assertEqual(re.match('^(?:(a)|c)((?(1)|d))$', 'cd').groups(), |
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259 (None, 'd')) |
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260 self.assertEqual(re.match('^(?:(a)|c)((?(1)|d))$', 'a').groups(), |
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261 ('a', '')) |
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262 |
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263 # Tests for bug #1177831: exercise groups other than the first group |
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264 p = re.compile('(?P<g1>a)(?P<g2>b)?((?(g2)c|d))') |
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265 self.assertEqual(p.match('abc').groups(), |
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266 ('a', 'b', 'c')) |
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267 self.assertEqual(p.match('ad').groups(), |
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268 ('a', None, 'd')) |
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269 self.assertEqual(p.match('abd'), None) |
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270 self.assertEqual(p.match('ac'), None) |
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271 |
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272 |
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273 def test_re_groupref(self): |
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274 self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', '|a|').groups(), |
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275 ('|', 'a')) |
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276 self.assertEqual(re.match(r'^(\|)?([^()]+)\1?$', 'a').groups(), |
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277 (None, 'a')) |
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278 self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', 'a|'), None) |
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279 self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', '|a'), None) |
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280 self.assertEqual(re.match(r'^(?:(a)|c)(\1)$', 'aa').groups(), |
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281 ('a', 'a')) |
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282 self.assertEqual(re.match(r'^(?:(a)|c)(\1)?$', 'c').groups(), |
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283 (None, None)) |
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284 |
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285 def test_groupdict(self): |
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286 self.assertEqual(re.match('(?P<first>first) (?P<second>second)', |
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287 'first second').groupdict(), |
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288 {'first':'first', 'second':'second'}) |
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289 |
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290 def test_expand(self): |
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291 self.assertEqual(re.match("(?P<first>first) (?P<second>second)", |
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292 "first second") |
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293 .expand(r"\2 \1 \g<second> \g<first>"), |
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294 "second first second first") |
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295 |
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296 def test_repeat_minmax(self): |
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297 self.assertEqual(re.match("^(\w){1}$", "abc"), None) |
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298 self.assertEqual(re.match("^(\w){1}?$", "abc"), None) |
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299 self.assertEqual(re.match("^(\w){1,2}$", "abc"), None) |
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300 self.assertEqual(re.match("^(\w){1,2}?$", "abc"), None) |
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301 |
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302 self.assertEqual(re.match("^(\w){3}$", "abc").group(1), "c") |
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303 self.assertEqual(re.match("^(\w){1,3}$", "abc").group(1), "c") |
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304 self.assertEqual(re.match("^(\w){1,4}$", "abc").group(1), "c") |
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305 self.assertEqual(re.match("^(\w){3,4}?$", "abc").group(1), "c") |
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306 self.assertEqual(re.match("^(\w){3}?$", "abc").group(1), "c") |
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307 self.assertEqual(re.match("^(\w){1,3}?$", "abc").group(1), "c") |
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308 self.assertEqual(re.match("^(\w){1,4}?$", "abc").group(1), "c") |
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309 self.assertEqual(re.match("^(\w){3,4}?$", "abc").group(1), "c") |
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310 |
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311 self.assertEqual(re.match("^x{1}$", "xxx"), None) |
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312 self.assertEqual(re.match("^x{1}?$", "xxx"), None) |
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313 self.assertEqual(re.match("^x{1,2}$", "xxx"), None) |
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314 self.assertEqual(re.match("^x{1,2}?$", "xxx"), None) |
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315 |
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316 self.assertNotEqual(re.match("^x{3}$", "xxx"), None) |
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317 self.assertNotEqual(re.match("^x{1,3}$", "xxx"), None) |
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318 self.assertNotEqual(re.match("^x{1,4}$", "xxx"), None) |
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319 self.assertNotEqual(re.match("^x{3,4}?$", "xxx"), None) |
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320 self.assertNotEqual(re.match("^x{3}?$", "xxx"), None) |
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321 self.assertNotEqual(re.match("^x{1,3}?$", "xxx"), None) |
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322 self.assertNotEqual(re.match("^x{1,4}?$", "xxx"), None) |
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323 self.assertNotEqual(re.match("^x{3,4}?$", "xxx"), None) |
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324 |
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325 self.assertEqual(re.match("^x{}$", "xxx"), None) |
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326 self.assertNotEqual(re.match("^x{}$", "x{}"), None) |
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327 |
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328 def test_getattr(self): |
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329 self.assertEqual(re.match("(a)", "a").pos, 0) |
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330 self.assertEqual(re.match("(a)", "a").endpos, 1) |
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331 self.assertEqual(re.match("(a)", "a").string, "a") |
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332 self.assertEqual(re.match("(a)", "a").regs, ((0, 1), (0, 1))) |
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333 self.assertNotEqual(re.match("(a)", "a").re, None) |
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334 |
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335 def test_special_escapes(self): |
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336 self.assertEqual(re.search(r"\b(b.)\b", |
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337 "abcd abc bcd bx").group(1), "bx") |
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338 self.assertEqual(re.search(r"\B(b.)\B", |
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339 "abc bcd bc abxd").group(1), "bx") |
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340 self.assertEqual(re.search(r"\b(b.)\b", |
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341 "abcd abc bcd bx", re.LOCALE).group(1), "bx") |
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342 self.assertEqual(re.search(r"\B(b.)\B", |
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343 "abc bcd bc abxd", re.LOCALE).group(1), "bx") |
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344 self.assertEqual(re.search(r"\b(b.)\b", |
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345 "abcd abc bcd bx", re.UNICODE).group(1), "bx") |
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346 self.assertEqual(re.search(r"\B(b.)\B", |
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347 "abc bcd bc abxd", re.UNICODE).group(1), "bx") |
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348 self.assertEqual(re.search(r"^abc$", "\nabc\n", re.M).group(0), "abc") |
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349 self.assertEqual(re.search(r"^\Aabc\Z$", "abc", re.M).group(0), "abc") |
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350 self.assertEqual(re.search(r"^\Aabc\Z$", "\nabc\n", re.M), None) |
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351 self.assertEqual(re.search(r"\b(b.)\b", |
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352 u"abcd abc bcd bx").group(1), "bx") |
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353 self.assertEqual(re.search(r"\B(b.)\B", |
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354 u"abc bcd bc abxd").group(1), "bx") |
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355 self.assertEqual(re.search(r"^abc$", u"\nabc\n", re.M).group(0), "abc") |
|
356 self.assertEqual(re.search(r"^\Aabc\Z$", u"abc", re.M).group(0), "abc") |
|
357 self.assertEqual(re.search(r"^\Aabc\Z$", u"\nabc\n", re.M), None) |
|
358 self.assertEqual(re.search(r"\d\D\w\W\s\S", |
|
359 "1aa! a").group(0), "1aa! a") |
|
360 self.assertEqual(re.search(r"\d\D\w\W\s\S", |
|
361 "1aa! a", re.LOCALE).group(0), "1aa! a") |
|
362 self.assertEqual(re.search(r"\d\D\w\W\s\S", |
|
363 "1aa! a", re.UNICODE).group(0), "1aa! a") |
|
364 |
|
365 def test_ignore_case(self): |
|
366 self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC") |
|
367 self.assertEqual(re.match("abc", u"ABC", re.I).group(0), "ABC") |
|
368 |
|
369 def test_bigcharset(self): |
|
370 self.assertEqual(re.match(u"([\u2222\u2223])", |
|
371 u"\u2222").group(1), u"\u2222") |
|
372 self.assertEqual(re.match(u"([\u2222\u2223])", |
|
373 u"\u2222", re.UNICODE).group(1), u"\u2222") |
|
374 |
|
375 def test_anyall(self): |
|
376 self.assertEqual(re.match("a.b", "a\nb", re.DOTALL).group(0), |
|
377 "a\nb") |
|
378 self.assertEqual(re.match("a.*b", "a\n\nb", re.DOTALL).group(0), |
|
379 "a\n\nb") |
|
380 |
|
381 def test_non_consuming(self): |
|
382 self.assertEqual(re.match("(a(?=\s[^a]))", "a b").group(1), "a") |
|
383 self.assertEqual(re.match("(a(?=\s[^a]*))", "a b").group(1), "a") |
|
384 self.assertEqual(re.match("(a(?=\s[abc]))", "a b").group(1), "a") |
|
385 self.assertEqual(re.match("(a(?=\s[abc]*))", "a bc").group(1), "a") |
|
386 self.assertEqual(re.match(r"(a)(?=\s\1)", "a a").group(1), "a") |
|
387 self.assertEqual(re.match(r"(a)(?=\s\1*)", "a aa").group(1), "a") |
|
388 self.assertEqual(re.match(r"(a)(?=\s(abc|a))", "a a").group(1), "a") |
|
389 |
|
390 self.assertEqual(re.match(r"(a(?!\s[^a]))", "a a").group(1), "a") |
|
391 self.assertEqual(re.match(r"(a(?!\s[abc]))", "a d").group(1), "a") |
|
392 self.assertEqual(re.match(r"(a)(?!\s\1)", "a b").group(1), "a") |
|
393 self.assertEqual(re.match(r"(a)(?!\s(abc|a))", "a b").group(1), "a") |
|
394 |
|
395 def test_ignore_case(self): |
|
396 self.assertEqual(re.match(r"(a\s[^a])", "a b", re.I).group(1), "a b") |
|
397 self.assertEqual(re.match(r"(a\s[^a]*)", "a bb", re.I).group(1), "a bb") |
|
398 self.assertEqual(re.match(r"(a\s[abc])", "a b", re.I).group(1), "a b") |
|
399 self.assertEqual(re.match(r"(a\s[abc]*)", "a bb", re.I).group(1), "a bb") |
|
400 self.assertEqual(re.match(r"((a)\s\2)", "a a", re.I).group(1), "a a") |
|
401 self.assertEqual(re.match(r"((a)\s\2*)", "a aa", re.I).group(1), "a aa") |
|
402 self.assertEqual(re.match(r"((a)\s(abc|a))", "a a", re.I).group(1), "a a") |
|
403 self.assertEqual(re.match(r"((a)\s(abc|a)*)", "a aa", re.I).group(1), "a aa") |
|
404 |
|
405 def test_category(self): |
|
406 self.assertEqual(re.match(r"(\s)", " ").group(1), " ") |
|
407 |
|
408 def test_getlower(self): |
|
409 import _sre |
|
410 self.assertEqual(_sre.getlower(ord('A'), 0), ord('a')) |
|
411 self.assertEqual(_sre.getlower(ord('A'), re.LOCALE), ord('a')) |
|
412 self.assertEqual(_sre.getlower(ord('A'), re.UNICODE), ord('a')) |
|
413 |
|
414 self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC") |
|
415 self.assertEqual(re.match("abc", u"ABC", re.I).group(0), "ABC") |
|
416 |
|
417 def test_not_literal(self): |
|
418 self.assertEqual(re.search("\s([^a])", " b").group(1), "b") |
|
419 self.assertEqual(re.search("\s([^a]*)", " bb").group(1), "bb") |
|
420 |
|
421 def test_search_coverage(self): |
|
422 self.assertEqual(re.search("\s(b)", " b").group(1), "b") |
|
423 self.assertEqual(re.search("a\s", "a ").group(0), "a ") |
|
424 |
|
425 def test_re_escape(self): |
|
426 p="" |
|
427 for i in range(0, 256): |
|
428 p = p + chr(i) |
|
429 self.assertEqual(re.match(re.escape(chr(i)), chr(i)) is not None, |
|
430 True) |
|
431 self.assertEqual(re.match(re.escape(chr(i)), chr(i)).span(), (0,1)) |
|
432 |
|
433 pat=re.compile(re.escape(p)) |
|
434 self.assertEqual(pat.match(p) is not None, True) |
|
435 self.assertEqual(pat.match(p).span(), (0,256)) |
|
436 |
|
437 def test_pickling(self): |
|
438 import pickle |
|
439 self.pickle_test(pickle) |
|
440 import cPickle |
|
441 self.pickle_test(cPickle) |
|
442 # old pickles expect the _compile() reconstructor in sre module |
|
443 import warnings |
|
444 original_filters = warnings.filters[:] |
|
445 try: |
|
446 warnings.filterwarnings("ignore", "The sre module is deprecated", |
|
447 DeprecationWarning) |
|
448 from sre import _compile |
|
449 finally: |
|
450 warnings.filters = original_filters |
|
451 |
|
452 def pickle_test(self, pickle): |
|
453 oldpat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)') |
|
454 s = pickle.dumps(oldpat) |
|
455 newpat = pickle.loads(s) |
|
456 self.assertEqual(oldpat, newpat) |
|
457 |
|
458 def test_constants(self): |
|
459 self.assertEqual(re.I, re.IGNORECASE) |
|
460 self.assertEqual(re.L, re.LOCALE) |
|
461 self.assertEqual(re.M, re.MULTILINE) |
|
462 self.assertEqual(re.S, re.DOTALL) |
|
463 self.assertEqual(re.X, re.VERBOSE) |
|
464 |
|
465 def test_flags(self): |
|
466 for flag in [re.I, re.M, re.X, re.S, re.L]: |
|
467 self.assertNotEqual(re.compile('^pattern$', flag), None) |
|
468 |
|
469 def test_sre_character_literals(self): |
|
470 for i in [0, 8, 16, 32, 64, 127, 128, 255]: |
|
471 self.assertNotEqual(re.match(r"\%03o" % i, chr(i)), None) |
|
472 self.assertNotEqual(re.match(r"\%03o0" % i, chr(i)+"0"), None) |
|
473 self.assertNotEqual(re.match(r"\%03o8" % i, chr(i)+"8"), None) |
|
474 self.assertNotEqual(re.match(r"\x%02x" % i, chr(i)), None) |
|
475 self.assertNotEqual(re.match(r"\x%02x0" % i, chr(i)+"0"), None) |
|
476 self.assertNotEqual(re.match(r"\x%02xz" % i, chr(i)+"z"), None) |
|
477 self.assertRaises(re.error, re.match, "\911", "") |
|
478 |
|
479 def test_sre_character_class_literals(self): |
|
480 for i in [0, 8, 16, 32, 64, 127, 128, 255]: |
|
481 self.assertNotEqual(re.match(r"[\%03o]" % i, chr(i)), None) |
|
482 self.assertNotEqual(re.match(r"[\%03o0]" % i, chr(i)), None) |
|
483 self.assertNotEqual(re.match(r"[\%03o8]" % i, chr(i)), None) |
|
484 self.assertNotEqual(re.match(r"[\x%02x]" % i, chr(i)), None) |
|
485 self.assertNotEqual(re.match(r"[\x%02x0]" % i, chr(i)), None) |
|
486 self.assertNotEqual(re.match(r"[\x%02xz]" % i, chr(i)), None) |
|
487 self.assertRaises(re.error, re.match, "[\911]", "") |
|
488 |
|
489 def test_bug_113254(self): |
|
490 self.assertEqual(re.match(r'(a)|(b)', 'b').start(1), -1) |
|
491 self.assertEqual(re.match(r'(a)|(b)', 'b').end(1), -1) |
|
492 self.assertEqual(re.match(r'(a)|(b)', 'b').span(1), (-1, -1)) |
|
493 |
|
494 def test_bug_527371(self): |
|
495 # bug described in patches 527371/672491 |
|
496 self.assertEqual(re.match(r'(a)?a','a').lastindex, None) |
|
497 self.assertEqual(re.match(r'(a)(b)?b','ab').lastindex, 1) |
|
498 self.assertEqual(re.match(r'(?P<a>a)(?P<b>b)?b','ab').lastgroup, 'a') |
|
499 self.assertEqual(re.match("(?P<a>a(b))", "ab").lastgroup, 'a') |
|
500 self.assertEqual(re.match("((a))", "a").lastindex, 1) |
|
501 |
|
502 def test_bug_545855(self): |
|
503 # bug 545855 -- This pattern failed to cause a compile error as it |
|
504 # should, instead provoking a TypeError. |
|
505 self.assertRaises(re.error, re.compile, 'foo[a-') |
|
506 |
|
507 def test_bug_418626(self): |
|
508 # bugs 418626 at al. -- Testing Greg Chapman's addition of op code |
|
509 # SRE_OP_MIN_REPEAT_ONE for eliminating recursion on simple uses of |
|
510 # pattern '*?' on a long string. |
|
511 self.assertEqual(re.match('.*?c', 10000*'ab'+'cd').end(0), 20001) |
|
512 self.assertEqual(re.match('.*?cd', 5000*'ab'+'c'+5000*'ab'+'cde').end(0), |
|
513 20003) |
|
514 self.assertEqual(re.match('.*?cd', 20000*'abc'+'de').end(0), 60001) |
|
515 # non-simple '*?' still used to hit the recursion limit, before the |
|
516 # non-recursive scheme was implemented. |
|
517 self.assertEqual(re.search('(a|b)*?c', 10000*'ab'+'cd').end(0), 20001) |
|
518 |
|
519 def test_bug_612074(self): |
|
520 pat=u"["+re.escape(u"\u2039")+u"]" |
|
521 self.assertEqual(re.compile(pat) and 1, 1) |
|
522 |
|
523 def test_stack_overflow(self): |
|
524 # nasty cases that used to overflow the straightforward recursive |
|
525 # implementation of repeated groups. |
|
526 self.assertEqual(re.match('(x)*', 50000*'x').group(1), 'x') |
|
527 self.assertEqual(re.match('(x)*y', 50000*'x'+'y').group(1), 'x') |
|
528 self.assertEqual(re.match('(x)*?y', 50000*'x'+'y').group(1), 'x') |
|
529 |
|
530 def test_scanner(self): |
|
531 def s_ident(scanner, token): return token |
|
532 def s_operator(scanner, token): return "op%s" % token |
|
533 def s_float(scanner, token): return float(token) |
|
534 def s_int(scanner, token): return int(token) |
|
535 |
|
536 scanner = Scanner([ |
|
537 (r"[a-zA-Z_]\w*", s_ident), |
|
538 (r"\d+\.\d*", s_float), |
|
539 (r"\d+", s_int), |
|
540 (r"=|\+|-|\*|/", s_operator), |
|
541 (r"\s+", None), |
|
542 ]) |
|
543 |
|
544 self.assertNotEqual(scanner.scanner.scanner("").pattern, None) |
|
545 |
|
546 self.assertEqual(scanner.scan("sum = 3*foo + 312.50 + bar"), |
|
547 (['sum', 'op=', 3, 'op*', 'foo', 'op+', 312.5, |
|
548 'op+', 'bar'], '')) |
|
549 |
|
550 def test_bug_448951(self): |
|
551 # bug 448951 (similar to 429357, but with single char match) |
|
552 # (Also test greedy matches.) |
|
553 for op in '','?','*': |
|
554 self.assertEqual(re.match(r'((.%s):)?z'%op, 'z').groups(), |
|
555 (None, None)) |
|
556 self.assertEqual(re.match(r'((.%s):)?z'%op, 'a:z').groups(), |
|
557 ('a:', 'a')) |
|
558 |
|
559 def test_bug_725106(self): |
|
560 # capturing groups in alternatives in repeats |
|
561 self.assertEqual(re.match('^((a)|b)*', 'abc').groups(), |
|
562 ('b', 'a')) |
|
563 self.assertEqual(re.match('^(([ab])|c)*', 'abc').groups(), |
|
564 ('c', 'b')) |
|
565 self.assertEqual(re.match('^((d)|[ab])*', 'abc').groups(), |
|
566 ('b', None)) |
|
567 self.assertEqual(re.match('^((a)c|[ab])*', 'abc').groups(), |
|
568 ('b', None)) |
|
569 self.assertEqual(re.match('^((a)|b)*?c', 'abc').groups(), |
|
570 ('b', 'a')) |
|
571 self.assertEqual(re.match('^(([ab])|c)*?d', 'abcd').groups(), |
|
572 ('c', 'b')) |
|
573 self.assertEqual(re.match('^((d)|[ab])*?c', 'abc').groups(), |
|
574 ('b', None)) |
|
575 self.assertEqual(re.match('^((a)c|[ab])*?c', 'abc').groups(), |
|
576 ('b', None)) |
|
577 |
|
578 def test_bug_725149(self): |
|
579 # mark_stack_base restoring before restoring marks |
|
580 self.assertEqual(re.match('(a)(?:(?=(b)*)c)*', 'abb').groups(), |
|
581 ('a', None)) |
|
582 self.assertEqual(re.match('(a)((?!(b)*))*', 'abb').groups(), |
|
583 ('a', None, None)) |
|
584 |
|
585 def test_bug_764548(self): |
|
586 # bug 764548, re.compile() barfs on str/unicode subclasses |
|
587 try: |
|
588 unicode |
|
589 except NameError: |
|
590 return # no problem if we have no unicode |
|
591 class my_unicode(unicode): pass |
|
592 pat = re.compile(my_unicode("abc")) |
|
593 self.assertEqual(pat.match("xyz"), None) |
|
594 |
|
595 def test_finditer(self): |
|
596 iter = re.finditer(r":+", "a:b::c:::d") |
|
597 self.assertEqual([item.group(0) for item in iter], |
|
598 [":", "::", ":::"]) |
|
599 |
|
600 def test_bug_926075(self): |
|
601 try: |
|
602 unicode |
|
603 except NameError: |
|
604 return # no problem if we have no unicode |
|
605 self.assert_(re.compile('bug_926075') is not |
|
606 re.compile(eval("u'bug_926075'"))) |
|
607 |
|
608 def test_bug_931848(self): |
|
609 try: |
|
610 unicode |
|
611 except NameError: |
|
612 pass |
|
613 pattern = eval('u"[\u002E\u3002\uFF0E\uFF61]"') |
|
614 self.assertEqual(re.compile(pattern).split("a.b.c"), |
|
615 ['a','b','c']) |
|
616 |
|
617 def test_bug_581080(self): |
|
618 iter = re.finditer(r"\s", "a b") |
|
619 self.assertEqual(iter.next().span(), (1,2)) |
|
620 self.assertRaises(StopIteration, iter.next) |
|
621 |
|
622 scanner = re.compile(r"\s").scanner("a b") |
|
623 self.assertEqual(scanner.search().span(), (1, 2)) |
|
624 self.assertEqual(scanner.search(), None) |
|
625 |
|
626 def test_bug_817234(self): |
|
627 iter = re.finditer(r".*", "asdf") |
|
628 self.assertEqual(iter.next().span(), (0, 4)) |
|
629 self.assertEqual(iter.next().span(), (4, 4)) |
|
630 self.assertRaises(StopIteration, iter.next) |
|
631 |
|
632 def test_empty_array(self): |
|
633 # SF buf 1647541 |
|
634 import array |
|
635 for typecode in 'cbBuhHiIlLfd': |
|
636 a = array.array(typecode) |
|
637 self.assertEqual(re.compile("bla").match(a), None) |
|
638 self.assertEqual(re.compile("").match(a).groups(), ()) |
|
639 |
|
640 def test_inline_flags(self): |
|
641 # Bug #1700 |
|
642 upper_char = unichr(0x1ea0) # Latin Capital Letter A with Dot Bellow |
|
643 lower_char = unichr(0x1ea1) # Latin Small Letter A with Dot Bellow |
|
644 |
|
645 p = re.compile(upper_char, re.I | re.U) |
|
646 q = p.match(lower_char) |
|
647 self.assertNotEqual(q, None) |
|
648 |
|
649 p = re.compile(lower_char, re.I | re.U) |
|
650 q = p.match(upper_char) |
|
651 self.assertNotEqual(q, None) |
|
652 |
|
653 p = re.compile('(?i)' + upper_char, re.U) |
|
654 q = p.match(lower_char) |
|
655 self.assertNotEqual(q, None) |
|
656 |
|
657 p = re.compile('(?i)' + lower_char, re.U) |
|
658 q = p.match(upper_char) |
|
659 self.assertNotEqual(q, None) |
|
660 |
|
661 p = re.compile('(?iu)' + upper_char) |
|
662 q = p.match(lower_char) |
|
663 self.assertNotEqual(q, None) |
|
664 |
|
665 p = re.compile('(?iu)' + lower_char) |
|
666 q = p.match(upper_char) |
|
667 self.assertNotEqual(q, None) |
|
668 |
|
669 |
|
670 def run_re_tests(): |
|
671 from test.re_tests import benchmarks, tests, SUCCEED, FAIL, SYNTAX_ERROR |
|
672 if verbose: |
|
673 print 'Running re_tests test suite' |
|
674 else: |
|
675 # To save time, only run the first and last 10 tests |
|
676 #tests = tests[:10] + tests[-10:] |
|
677 pass |
|
678 |
|
679 for t in tests: |
|
680 sys.stdout.flush() |
|
681 pattern = s = outcome = repl = expected = None |
|
682 if len(t) == 5: |
|
683 pattern, s, outcome, repl, expected = t |
|
684 elif len(t) == 3: |
|
685 pattern, s, outcome = t |
|
686 else: |
|
687 raise ValueError, ('Test tuples should have 3 or 5 fields', t) |
|
688 |
|
689 try: |
|
690 obj = re.compile(pattern) |
|
691 except re.error: |
|
692 if outcome == SYNTAX_ERROR: pass # Expected a syntax error |
|
693 else: |
|
694 print '=== Syntax error:', t |
|
695 except KeyboardInterrupt: raise KeyboardInterrupt |
|
696 except: |
|
697 print '*** Unexpected error ***', t |
|
698 if verbose: |
|
699 traceback.print_exc(file=sys.stdout) |
|
700 else: |
|
701 try: |
|
702 result = obj.search(s) |
|
703 except re.error, msg: |
|
704 print '=== Unexpected exception', t, repr(msg) |
|
705 if outcome == SYNTAX_ERROR: |
|
706 # This should have been a syntax error; forget it. |
|
707 pass |
|
708 elif outcome == FAIL: |
|
709 if result is None: pass # No match, as expected |
|
710 else: print '=== Succeeded incorrectly', t |
|
711 elif outcome == SUCCEED: |
|
712 if result is not None: |
|
713 # Matched, as expected, so now we compute the |
|
714 # result string and compare it to our expected result. |
|
715 start, end = result.span(0) |
|
716 vardict={'found': result.group(0), |
|
717 'groups': result.group(), |
|
718 'flags': result.re.flags} |
|
719 for i in range(1, 100): |
|
720 try: |
|
721 gi = result.group(i) |
|
722 # Special hack because else the string concat fails: |
|
723 if gi is None: |
|
724 gi = "None" |
|
725 except IndexError: |
|
726 gi = "Error" |
|
727 vardict['g%d' % i] = gi |
|
728 for i in result.re.groupindex.keys(): |
|
729 try: |
|
730 gi = result.group(i) |
|
731 if gi is None: |
|
732 gi = "None" |
|
733 except IndexError: |
|
734 gi = "Error" |
|
735 vardict[i] = gi |
|
736 repl = eval(repl, vardict) |
|
737 if repl != expected: |
|
738 print '=== grouping error', t, |
|
739 print repr(repl) + ' should be ' + repr(expected) |
|
740 else: |
|
741 print '=== Failed incorrectly', t |
|
742 |
|
743 # Try the match on a unicode string, and check that it |
|
744 # still succeeds. |
|
745 try: |
|
746 result = obj.search(unicode(s, "latin-1")) |
|
747 if result is None: |
|
748 print '=== Fails on unicode match', t |
|
749 except NameError: |
|
750 continue # 1.5.2 |
|
751 except TypeError: |
|
752 continue # unicode test case |
|
753 |
|
754 # Try the match on a unicode pattern, and check that it |
|
755 # still succeeds. |
|
756 obj=re.compile(unicode(pattern, "latin-1")) |
|
757 result = obj.search(s) |
|
758 if result is None: |
|
759 print '=== Fails on unicode pattern match', t |
|
760 |
|
761 # Try the match with the search area limited to the extent |
|
762 # of the match and see if it still succeeds. \B will |
|
763 # break (because it won't match at the end or start of a |
|
764 # string), so we'll ignore patterns that feature it. |
|
765 |
|
766 if pattern[:2] != '\\B' and pattern[-2:] != '\\B' \ |
|
767 and result is not None: |
|
768 obj = re.compile(pattern) |
|
769 result = obj.search(s, result.start(0), result.end(0) + 1) |
|
770 if result is None: |
|
771 print '=== Failed on range-limited match', t |
|
772 |
|
773 # Try the match with IGNORECASE enabled, and check that it |
|
774 # still succeeds. |
|
775 obj = re.compile(pattern, re.IGNORECASE) |
|
776 result = obj.search(s) |
|
777 if result is None: |
|
778 print '=== Fails on case-insensitive match', t |
|
779 |
|
780 # Try the match with LOCALE enabled, and check that it |
|
781 # still succeeds. |
|
782 obj = re.compile(pattern, re.LOCALE) |
|
783 result = obj.search(s) |
|
784 if result is None: |
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785 print '=== Fails on locale-sensitive match', t |
|
786 |
|
787 # Try the match with UNICODE locale enabled, and check |
|
788 # that it still succeeds. |
|
789 obj = re.compile(pattern, re.UNICODE) |
|
790 result = obj.search(s) |
|
791 if result is None: |
|
792 print '=== Fails on unicode-sensitive match', t |
|
793 |
|
794 def test_main(): |
|
795 run_unittest(ReTests) |
|
796 run_re_tests() |
|
797 |
|
798 if __name__ == "__main__": |
|
799 test_main() |