Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 1 | from test.support import verbose, run_unittest, gc_collect, bigmemtest, _2G, \ |
Antoine Pitrou | d2cc743 | 2014-02-03 20:59:59 +0100 | [diff] [blame] | 2 | cpython_only, captured_stdout |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 3 | import io |
Serhiy Storchaka | 4659cc0 | 2014-10-31 00:53:49 +0200 | [diff] [blame] | 4 | import locale |
Guido van Rossum | 8e0ce30 | 1997-07-11 19:34:44 +0000 | [diff] [blame] | 5 | import re |
Antoine Pitrou | 79aa68d | 2013-10-25 21:36:10 +0200 | [diff] [blame] | 6 | import sre_compile |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 7 | import string |
Victor Stinner | b44fb12 | 2016-11-21 16:35:08 +0100 | [diff] [blame] | 8 | import sys |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 9 | import traceback |
Antoine Pitrou | 79aa68d | 2013-10-25 21:36:10 +0200 | [diff] [blame] | 10 | import unittest |
Victor Stinner | b44fb12 | 2016-11-21 16:35:08 +0100 | [diff] [blame] | 11 | import warnings |
| 12 | from re import Scanner |
Raymond Hettinger | 027bb63 | 2004-05-31 03:09:25 +0000 | [diff] [blame] | 13 | from weakref import proxy |
Guido van Rossum | 8e0ce30 | 1997-07-11 19:34:44 +0000 | [diff] [blame] | 14 | |
Guido van Rossum | 23b2257 | 1997-07-17 22:36:14 +0000 | [diff] [blame] | 15 | # Misc tests from Tim Peters' re.doc |
| 16 | |
Just van Rossum | 6802c6e | 2003-07-02 14:36:59 +0000 | [diff] [blame] | 17 | # WARNING: Don't change details in these tests if you don't know |
Ezio Melotti | 42da663 | 2011-03-15 05:18:48 +0200 | [diff] [blame] | 18 | # what you're doing. Some of these tests were carefully modeled to |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 19 | # cover most of the code. |
| 20 | |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 21 | class S(str): |
| 22 | def __getitem__(self, index): |
| 23 | return S(super().__getitem__(index)) |
| 24 | |
| 25 | class B(bytes): |
| 26 | def __getitem__(self, index): |
| 27 | return B(super().__getitem__(index)) |
| 28 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 29 | class ReTests(unittest.TestCase): |
Raymond Hettinger | 027bb63 | 2004-05-31 03:09:25 +0000 | [diff] [blame] | 30 | |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 31 | def assertTypedEqual(self, actual, expect, msg=None): |
| 32 | self.assertEqual(actual, expect, msg) |
| 33 | def recurse(actual, expect): |
| 34 | if isinstance(expect, (tuple, list)): |
| 35 | for x, y in zip(actual, expect): |
| 36 | recurse(x, y) |
| 37 | else: |
| 38 | self.assertIs(type(actual), type(expect), msg) |
| 39 | recurse(actual, expect) |
| 40 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 41 | def checkPatternError(self, pattern, errmsg, pos=None): |
| 42 | with self.assertRaises(re.error) as cm: |
| 43 | re.compile(pattern) |
| 44 | with self.subTest(pattern=pattern): |
| 45 | err = cm.exception |
| 46 | self.assertEqual(err.msg, errmsg) |
| 47 | if pos is not None: |
| 48 | self.assertEqual(err.pos, pos) |
| 49 | |
| 50 | def checkTemplateError(self, pattern, repl, string, errmsg, pos=None): |
| 51 | with self.assertRaises(re.error) as cm: |
| 52 | re.sub(pattern, repl, string) |
| 53 | with self.subTest(pattern=pattern, repl=repl): |
| 54 | err = cm.exception |
| 55 | self.assertEqual(err.msg, errmsg) |
| 56 | if pos is not None: |
| 57 | self.assertEqual(err.pos, pos) |
| 58 | |
Benjamin Peterson | e48944b | 2012-03-07 14:50:25 -0600 | [diff] [blame] | 59 | def test_keep_buffer(self): |
| 60 | # See bug 14212 |
| 61 | b = bytearray(b'x') |
| 62 | it = re.finditer(b'a', b) |
| 63 | with self.assertRaises(BufferError): |
| 64 | b.extend(b'x'*400) |
| 65 | list(it) |
| 66 | del it |
| 67 | gc_collect() |
| 68 | b.extend(b'x'*400) |
| 69 | |
Raymond Hettinger | 027bb63 | 2004-05-31 03:09:25 +0000 | [diff] [blame] | 70 | def test_weakref(self): |
| 71 | s = 'QabbbcR' |
| 72 | x = re.compile('ab+c') |
| 73 | y = proxy(x) |
| 74 | self.assertEqual(x.findall('QabbbcR'), y.findall('QabbbcR')) |
| 75 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 76 | def test_search_star_plus(self): |
| 77 | self.assertEqual(re.search('x*', 'axx').span(0), (0, 0)) |
| 78 | self.assertEqual(re.search('x*', 'axx').span(), (0, 0)) |
| 79 | self.assertEqual(re.search('x+', 'axx').span(0), (1, 3)) |
| 80 | self.assertEqual(re.search('x+', 'axx').span(), (1, 3)) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 81 | self.assertIsNone(re.search('x', 'aaa')) |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 82 | self.assertEqual(re.match('a*', 'xxx').span(0), (0, 0)) |
| 83 | self.assertEqual(re.match('a*', 'xxx').span(), (0, 0)) |
| 84 | self.assertEqual(re.match('x*', 'xxxa').span(0), (0, 3)) |
| 85 | self.assertEqual(re.match('x*', 'xxxa').span(), (0, 3)) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 86 | self.assertIsNone(re.match('a+', 'xxx')) |
Guido van Rossum | 8430c58 | 1998-04-03 21:47:12 +0000 | [diff] [blame] | 87 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 88 | def bump_num(self, matchobj): |
Guido van Rossum | 41360a4 | 1998-03-26 19:42:58 +0000 | [diff] [blame] | 89 | int_value = int(matchobj.group(0)) |
| 90 | return str(int_value + 1) |
Guido van Rossum | 23b2257 | 1997-07-17 22:36:14 +0000 | [diff] [blame] | 91 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 92 | def test_basic_re_sub(self): |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 93 | self.assertTypedEqual(re.sub('y', 'a', 'xyz'), 'xaz') |
| 94 | self.assertTypedEqual(re.sub('y', S('a'), S('xyz')), 'xaz') |
| 95 | self.assertTypedEqual(re.sub(b'y', b'a', b'xyz'), b'xaz') |
| 96 | self.assertTypedEqual(re.sub(b'y', B(b'a'), B(b'xyz')), b'xaz') |
| 97 | self.assertTypedEqual(re.sub(b'y', bytearray(b'a'), bytearray(b'xyz')), b'xaz') |
| 98 | self.assertTypedEqual(re.sub(b'y', memoryview(b'a'), memoryview(b'xyz')), b'xaz') |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 99 | for y in ("\xe0", "\u0430", "\U0001d49c"): |
| 100 | self.assertEqual(re.sub(y, 'a', 'x%sz' % y), 'xaz') |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 101 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 102 | self.assertEqual(re.sub("(?i)b+", "x", "bbbb BBBB"), 'x x') |
| 103 | self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y'), |
| 104 | '9.3 -3 24x100y') |
Serhiy Storchaka | b02f8fc | 2016-09-25 20:36:23 +0300 | [diff] [blame] | 105 | self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', 3), |
| 106 | '9.3 -3 23x99y') |
Victor Stinner | 55e614a | 2014-10-29 16:58:59 +0100 | [diff] [blame] | 107 | self.assertEqual(re.sub(r'\d+', self.bump_num, '08.2 -2 23x99y', count=3), |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 108 | '9.3 -3 23x99y') |
Fredrik Lundh | 1151a8c | 2000-08-08 16:47:42 +0000 | [diff] [blame] | 109 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 110 | self.assertEqual(re.sub('.', lambda m: r"\n", 'x'), '\\n') |
| 111 | self.assertEqual(re.sub('.', r"\n", 'x'), '\n') |
Guido van Rossum | dfa6790 | 1997-12-08 17:12:06 +0000 | [diff] [blame] | 112 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 113 | s = r"\1\1" |
| 114 | self.assertEqual(re.sub('(.)', s, 'x'), 'xx') |
| 115 | self.assertEqual(re.sub('(.)', re.escape(s), 'x'), s) |
| 116 | self.assertEqual(re.sub('(.)', lambda m: s, 'x'), s) |
Guido van Rossum | 23b2257 | 1997-07-17 22:36:14 +0000 | [diff] [blame] | 117 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 118 | self.assertEqual(re.sub('(?P<a>x)', r'\g<a>\g<a>', 'xx'), 'xxxx') |
| 119 | self.assertEqual(re.sub('(?P<a>x)', r'\g<a>\g<1>', 'xx'), 'xxxx') |
| 120 | self.assertEqual(re.sub('(?P<unk>x)', r'\g<unk>\g<unk>', 'xx'), 'xxxx') |
| 121 | self.assertEqual(re.sub('(?P<unk>x)', r'\g<1>\g<1>', 'xx'), 'xxxx') |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 122 | |
Serhiy Storchaka | a54aae0 | 2015-03-24 22:58:14 +0200 | [diff] [blame] | 123 | self.assertEqual(re.sub('a', r'\t\n\v\r\f\a\b', 'a'), '\t\n\v\r\f\a\b') |
| 124 | self.assertEqual(re.sub('a', '\t\n\v\r\f\a\b', 'a'), '\t\n\v\r\f\a\b') |
| 125 | self.assertEqual(re.sub('a', '\t\n\v\r\f\a\b', 'a'), |
| 126 | (chr(9)+chr(10)+chr(11)+chr(13)+chr(12)+chr(7)+chr(8))) |
| 127 | for c in 'cdehijklmopqsuwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ': |
| 128 | with self.subTest(c): |
Serhiy Storchaka | 53c53ea | 2016-12-06 19:15:29 +0200 | [diff] [blame] | 129 | with self.assertWarns(DeprecationWarning): |
Serhiy Storchaka | a54aae0 | 2015-03-24 22:58:14 +0200 | [diff] [blame] | 130 | self.assertEqual(re.sub('a', '\\' + c, 'a'), '\\' + c) |
Guido van Rossum | 95e8053 | 1997-08-13 22:34:14 +0000 | [diff] [blame] | 131 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 132 | self.assertEqual(re.sub(r'^\s*', 'X', 'test'), 'Xtest') |
Guido van Rossum | e056e4d | 2001-08-10 14:52:48 +0000 | [diff] [blame] | 133 | |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 134 | def test_bug_449964(self): |
| 135 | # fails for group followed by other escape |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 136 | self.assertEqual(re.sub(r'(?P<unk>x)', r'\g<1>\g<1>\b', 'xx'), |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 137 | 'xx\bxx\b') |
| 138 | |
| 139 | def test_bug_449000(self): |
| 140 | # Test for sub() on escaped characters |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 141 | self.assertEqual(re.sub(r'\r\n', r'\n', 'abc\r\ndef\r\n'), |
| 142 | 'abc\ndef\n') |
| 143 | self.assertEqual(re.sub('\r\n', r'\n', 'abc\r\ndef\r\n'), |
| 144 | 'abc\ndef\n') |
| 145 | self.assertEqual(re.sub(r'\r\n', '\n', 'abc\r\ndef\r\n'), |
| 146 | 'abc\ndef\n') |
| 147 | self.assertEqual(re.sub('\r\n', '\n', 'abc\r\ndef\r\n'), |
| 148 | 'abc\ndef\n') |
Guido van Rossum | 23b2257 | 1997-07-17 22:36:14 +0000 | [diff] [blame] | 149 | |
Christian Heimes | 5fb7c2a | 2007-12-24 08:52:31 +0000 | [diff] [blame] | 150 | def test_bug_1661(self): |
| 151 | # Verify that flags do not get silently ignored with compiled patterns |
| 152 | pattern = re.compile('.') |
| 153 | self.assertRaises(ValueError, re.match, pattern, 'A', re.I) |
| 154 | self.assertRaises(ValueError, re.search, pattern, 'A', re.I) |
| 155 | self.assertRaises(ValueError, re.findall, pattern, 'A', re.I) |
| 156 | self.assertRaises(ValueError, re.compile, pattern, re.I) |
| 157 | |
Guido van Rossum | 92f8f3e | 2008-09-10 14:30:50 +0000 | [diff] [blame] | 158 | def test_bug_3629(self): |
| 159 | # A regex that triggered a bug in the sre-code validator |
| 160 | re.compile("(?P<quote>)(?(quote))") |
| 161 | |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 162 | def test_sub_template_numeric_escape(self): |
| 163 | # bug 776311 and friends |
| 164 | self.assertEqual(re.sub('x', r'\0', 'x'), '\0') |
| 165 | self.assertEqual(re.sub('x', r'\000', 'x'), '\000') |
| 166 | self.assertEqual(re.sub('x', r'\001', 'x'), '\001') |
| 167 | self.assertEqual(re.sub('x', r'\008', 'x'), '\0' + '8') |
| 168 | self.assertEqual(re.sub('x', r'\009', 'x'), '\0' + '9') |
| 169 | self.assertEqual(re.sub('x', r'\111', 'x'), '\111') |
| 170 | self.assertEqual(re.sub('x', r'\117', 'x'), '\117') |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 171 | self.assertEqual(re.sub('x', r'\377', 'x'), '\377') |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 172 | |
| 173 | self.assertEqual(re.sub('x', r'\1111', 'x'), '\1111') |
| 174 | self.assertEqual(re.sub('x', r'\1111', 'x'), '\111' + '1') |
| 175 | |
| 176 | self.assertEqual(re.sub('x', r'\00', 'x'), '\x00') |
| 177 | self.assertEqual(re.sub('x', r'\07', 'x'), '\x07') |
| 178 | self.assertEqual(re.sub('x', r'\08', 'x'), '\0' + '8') |
| 179 | self.assertEqual(re.sub('x', r'\09', 'x'), '\0' + '9') |
| 180 | self.assertEqual(re.sub('x', r'\0a', 'x'), '\0' + 'a') |
| 181 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 182 | self.checkTemplateError('x', r'\400', 'x', |
| 183 | r'octal escape value \400 outside of ' |
| 184 | r'range 0-0o377', 0) |
| 185 | self.checkTemplateError('x', r'\777', 'x', |
| 186 | r'octal escape value \777 outside of ' |
| 187 | r'range 0-0o377', 0) |
Tim Peters | 0e9980f | 2004-09-12 03:49:31 +0000 | [diff] [blame] | 188 | |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 189 | self.checkTemplateError('x', r'\1', 'x', 'invalid group reference 1', 1) |
| 190 | self.checkTemplateError('x', r'\8', 'x', 'invalid group reference 8', 1) |
| 191 | self.checkTemplateError('x', r'\9', 'x', 'invalid group reference 9', 1) |
| 192 | self.checkTemplateError('x', r'\11', 'x', 'invalid group reference 11', 1) |
| 193 | self.checkTemplateError('x', r'\18', 'x', 'invalid group reference 18', 1) |
| 194 | self.checkTemplateError('x', r'\1a', 'x', 'invalid group reference 1', 1) |
| 195 | self.checkTemplateError('x', r'\90', 'x', 'invalid group reference 90', 1) |
| 196 | self.checkTemplateError('x', r'\99', 'x', 'invalid group reference 99', 1) |
| 197 | self.checkTemplateError('x', r'\118', 'x', 'invalid group reference 11', 1) |
| 198 | self.checkTemplateError('x', r'\11a', 'x', 'invalid group reference 11', 1) |
| 199 | self.checkTemplateError('x', r'\181', 'x', 'invalid group reference 18', 1) |
| 200 | self.checkTemplateError('x', r'\800', 'x', 'invalid group reference 80', 1) |
| 201 | self.checkTemplateError('x', r'\8', '', 'invalid group reference 8', 1) |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 202 | |
| 203 | # in python2.3 (etc), these loop endlessly in sre_parser.py |
| 204 | self.assertEqual(re.sub('(((((((((((x)))))))))))', r'\11', 'x'), 'x') |
| 205 | self.assertEqual(re.sub('((((((((((y))))))))))(.)', r'\118', 'xyz'), |
| 206 | 'xz8') |
| 207 | self.assertEqual(re.sub('((((((((((y))))))))))(.)', r'\11a', 'xyz'), |
| 208 | 'xza') |
| 209 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 210 | def test_qualified_re_sub(self): |
| 211 | self.assertEqual(re.sub('a', 'b', 'aaaaa'), 'bbbbb') |
Serhiy Storchaka | b02f8fc | 2016-09-25 20:36:23 +0300 | [diff] [blame] | 212 | self.assertEqual(re.sub('a', 'b', 'aaaaa', 1), 'baaaa') |
Victor Stinner | 55e614a | 2014-10-29 16:58:59 +0100 | [diff] [blame] | 213 | self.assertEqual(re.sub('a', 'b', 'aaaaa', count=1), 'baaaa') |
Guido van Rossum | 8430c58 | 1998-04-03 21:47:12 +0000 | [diff] [blame] | 214 | |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 215 | def test_bug_114660(self): |
| 216 | self.assertEqual(re.sub(r'(\S)\s+(\S)', r'\1 \2', 'hello there'), |
| 217 | 'hello there') |
| 218 | |
| 219 | def test_bug_462270(self): |
| 220 | # Test for empty sub() behaviour, see SF bug #462270 |
| 221 | self.assertEqual(re.sub('x*', '-', 'abxd'), '-a-b-d-') |
| 222 | self.assertEqual(re.sub('x+', '-', 'abxd'), 'ab-d') |
| 223 | |
Ezio Melotti | 0941d9f | 2012-11-03 20:33:08 +0200 | [diff] [blame] | 224 | def test_symbolic_groups(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 225 | re.compile(r'(?P<a>x)(?P=a)(?(a)y)') |
| 226 | re.compile(r'(?P<a1>x)(?P=a1)(?(a1)y)') |
| 227 | re.compile(r'(?P<a1>x)\1(?(1)y)') |
| 228 | self.checkPatternError(r'(?P<a>)(?P<a>)', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 229 | "redefinition of group name 'a' as group 2; " |
| 230 | "was group 1") |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 231 | self.checkPatternError(r'(?P<a>(?P=a))', |
Serhiy Storchaka | 485407c | 2015-07-18 23:27:00 +0300 | [diff] [blame] | 232 | "cannot refer to an open group", 10) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 233 | self.checkPatternError(r'(?Pxy)', 'unknown extension ?Px') |
| 234 | self.checkPatternError(r'(?P<a>)(?P=a', 'missing ), unterminated name', 11) |
| 235 | self.checkPatternError(r'(?P=', 'missing group name', 4) |
| 236 | self.checkPatternError(r'(?P=)', 'missing group name', 4) |
| 237 | self.checkPatternError(r'(?P=1)', "bad character in group name '1'", 4) |
| 238 | self.checkPatternError(r'(?P=a)', "unknown group name 'a'") |
| 239 | self.checkPatternError(r'(?P=a1)', "unknown group name 'a1'") |
| 240 | self.checkPatternError(r'(?P=a.)', "bad character in group name 'a.'", 4) |
| 241 | self.checkPatternError(r'(?P<)', 'missing >, unterminated name', 4) |
| 242 | self.checkPatternError(r'(?P<a', 'missing >, unterminated name', 4) |
| 243 | self.checkPatternError(r'(?P<', 'missing group name', 4) |
| 244 | self.checkPatternError(r'(?P<>)', 'missing group name', 4) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 245 | self.checkPatternError(r'(?P<1>)', "bad character in group name '1'", 4) |
| 246 | self.checkPatternError(r'(?P<a.>)', "bad character in group name 'a.'", 4) |
| 247 | self.checkPatternError(r'(?(', 'missing group name', 3) |
| 248 | self.checkPatternError(r'(?())', 'missing group name', 3) |
| 249 | self.checkPatternError(r'(?(a))', "unknown group name 'a'", 3) |
| 250 | self.checkPatternError(r'(?(-1))', "bad character in group name '-1'", 3) |
| 251 | self.checkPatternError(r'(?(1a))', "bad character in group name '1a'", 3) |
| 252 | self.checkPatternError(r'(?(a.))', "bad character in group name 'a.'", 3) |
Georg Brandl | 1d472b7 | 2013-04-14 11:40:00 +0200 | [diff] [blame] | 253 | # New valid/invalid identifiers in Python 3 |
| 254 | re.compile('(?P<µ>x)(?P=µ)(?(µ)y)') |
| 255 | re.compile('(?P<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>x)(?P=𝔘𝔫𝔦𝔠𝔬𝔡𝔢)(?(𝔘𝔫𝔦𝔠𝔬𝔡𝔢)y)') |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 256 | self.checkPatternError('(?P<©>x)', "bad character in group name '©'", 4) |
Serhiy Storchaka | 9baa5b2 | 2014-09-29 22:49:23 +0300 | [diff] [blame] | 257 | # Support > 100 groups. |
| 258 | pat = '|'.join('x(?P<a%d>%x)y' % (i, i) for i in range(1, 200 + 1)) |
| 259 | pat = '(?:%s)(?(200)z|t)' % pat |
| 260 | self.assertEqual(re.match(pat, 'xc8yz').span(), (0, 5)) |
Ezio Melotti | 0941d9f | 2012-11-03 20:33:08 +0200 | [diff] [blame] | 261 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 262 | def test_symbolic_refs(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 263 | self.checkTemplateError('(?P<a>x)', r'\g<a', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 264 | 'missing >, unterminated name', 3) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 265 | self.checkTemplateError('(?P<a>x)', r'\g<', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 266 | 'missing group name', 3) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 267 | self.checkTemplateError('(?P<a>x)', r'\g', 'xx', 'missing <', 2) |
| 268 | self.checkTemplateError('(?P<a>x)', r'\g<a a>', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 269 | "bad character in group name 'a a'", 3) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 270 | self.checkTemplateError('(?P<a>x)', r'\g<>', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 271 | 'missing group name', 3) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 272 | self.checkTemplateError('(?P<a>x)', r'\g<1a1>', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 273 | "bad character in group name '1a1'", 3) |
| 274 | self.checkTemplateError('(?P<a>x)', r'\g<2>', 'xx', |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 275 | 'invalid group reference 2', 3) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 276 | self.checkTemplateError('(?P<a>x)', r'\2', 'xx', |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 277 | 'invalid group reference 2', 1) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 278 | with self.assertRaisesRegex(IndexError, "unknown group name 'ab'"): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 279 | re.sub('(?P<a>x)', r'\g<ab>', 'xx') |
Serhiy Storchaka | 7438e4b | 2014-10-10 11:06:31 +0300 | [diff] [blame] | 280 | self.assertEqual(re.sub('(?P<a>x)|(?P<b>y)', r'\g<b>', 'xx'), '') |
| 281 | self.assertEqual(re.sub('(?P<a>x)|(?P<b>y)', r'\2', 'xx'), '') |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 282 | self.checkTemplateError('(?P<a>x)', r'\g<-1>', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 283 | "bad character in group name '-1'", 3) |
Georg Brandl | 1d472b7 | 2013-04-14 11:40:00 +0200 | [diff] [blame] | 284 | # New valid/invalid identifiers in Python 3 |
| 285 | self.assertEqual(re.sub('(?P<µ>x)', r'\g<µ>', 'xx'), 'xx') |
| 286 | self.assertEqual(re.sub('(?P<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>x)', r'\g<𝔘𝔫𝔦𝔠𝔬𝔡𝔢>', 'xx'), 'xx') |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 287 | self.checkTemplateError('(?P<a>x)', r'\g<©>', 'xx', |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 288 | "bad character in group name '©'", 3) |
Serhiy Storchaka | 9baa5b2 | 2014-09-29 22:49:23 +0300 | [diff] [blame] | 289 | # Support > 100 groups. |
| 290 | pat = '|'.join('x(?P<a%d>%x)y' % (i, i) for i in range(1, 200 + 1)) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 291 | self.assertEqual(re.sub(pat, r'\g<200>', 'xc8yzxc8y'), 'c8zc8') |
Guido van Rossum | f473cb0 | 1998-01-14 16:42:17 +0000 | [diff] [blame] | 292 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 293 | def test_re_subn(self): |
| 294 | self.assertEqual(re.subn("(?i)b+", "x", "bbbb BBBB"), ('x x', 2)) |
| 295 | self.assertEqual(re.subn("b+", "x", "bbbb BBBB"), ('x BBBB', 1)) |
| 296 | self.assertEqual(re.subn("b+", "x", "xyz"), ('xyz', 0)) |
| 297 | self.assertEqual(re.subn("b*", "x", "xyz"), ('xxxyxzx', 4)) |
Serhiy Storchaka | b02f8fc | 2016-09-25 20:36:23 +0300 | [diff] [blame] | 298 | self.assertEqual(re.subn("b*", "x", "xyz", 2), ('xxxyz', 2)) |
Victor Stinner | 55e614a | 2014-10-29 16:58:59 +0100 | [diff] [blame] | 299 | self.assertEqual(re.subn("b*", "x", "xyz", count=2), ('xxxyz', 2)) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 300 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 301 | def test_re_split(self): |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 302 | for string in ":a:b::c", S(":a:b::c"): |
| 303 | self.assertTypedEqual(re.split(":", string), |
| 304 | ['', 'a', 'b', '', 'c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 305 | self.assertTypedEqual(re.split(":+", string), |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 306 | ['', 'a', 'b', 'c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 307 | self.assertTypedEqual(re.split("(:+)", string), |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 308 | ['', ':', 'a', ':', 'b', '::', 'c']) |
| 309 | for string in (b":a:b::c", B(b":a:b::c"), bytearray(b":a:b::c"), |
| 310 | memoryview(b":a:b::c")): |
| 311 | self.assertTypedEqual(re.split(b":", string), |
| 312 | [b'', b'a', b'b', b'', b'c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 313 | self.assertTypedEqual(re.split(b":+", string), |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 314 | [b'', b'a', b'b', b'c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 315 | self.assertTypedEqual(re.split(b"(:+)", string), |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 316 | [b'', b':', b'a', b':', b'b', b'::', b'c']) |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 317 | for a, b, c in ("\xe0\xdf\xe7", "\u0430\u0431\u0432", |
| 318 | "\U0001d49c\U0001d49e\U0001d4b5"): |
| 319 | string = ":%s:%s::%s" % (a, b, c) |
| 320 | self.assertEqual(re.split(":", string), ['', a, b, '', c]) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 321 | self.assertEqual(re.split(":+", string), ['', a, b, c]) |
| 322 | self.assertEqual(re.split("(:+)", string), |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 323 | ['', ':', a, ':', b, '::', c]) |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 324 | |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 325 | self.assertEqual(re.split("(?::+)", ":a:b::c"), ['', 'a', 'b', 'c']) |
| 326 | self.assertEqual(re.split("(:)+", ":a:b::c"), |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 327 | ['', ':', 'a', ':', 'b', ':', 'c']) |
| 328 | self.assertEqual(re.split("([b:]+)", ":a:b::c"), |
| 329 | ['', ':', 'a', ':b::', 'c']) |
| 330 | self.assertEqual(re.split("(b)|(:+)", ":a:b::c"), |
| 331 | ['', None, ':', 'a', None, ':', '', 'b', None, '', |
| 332 | None, '::', 'c']) |
| 333 | self.assertEqual(re.split("(?:b)|(?::+)", ":a:b::c"), |
| 334 | ['', 'a', '', '', 'c']) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 335 | |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 336 | for sep, expected in [ |
| 337 | (':*', ['', 'a', 'b', 'c']), |
| 338 | ('(?::*)', ['', 'a', 'b', 'c']), |
| 339 | ('(:*)', ['', ':', 'a', ':', 'b', '::', 'c']), |
| 340 | ('(:)*', ['', ':', 'a', ':', 'b', ':', 'c']), |
| 341 | ]: |
| 342 | with self.subTest(sep=sep), self.assertWarns(FutureWarning): |
| 343 | self.assertTypedEqual(re.split(sep, ':a:b::c'), expected) |
| 344 | |
| 345 | for sep, expected in [ |
| 346 | ('', [':a:b::c']), |
| 347 | (r'\b', [':a:b::c']), |
| 348 | (r'(?=:)', [':a:b::c']), |
| 349 | (r'(?<=:)', [':a:b::c']), |
| 350 | ]: |
| 351 | with self.subTest(sep=sep), self.assertRaises(ValueError): |
| 352 | self.assertTypedEqual(re.split(sep, ':a:b::c'), expected) |
| 353 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 354 | def test_qualified_re_split(self): |
Serhiy Storchaka | b02f8fc | 2016-09-25 20:36:23 +0300 | [diff] [blame] | 355 | self.assertEqual(re.split(":", ":a:b::c", 2), ['', 'a', 'b::c']) |
Victor Stinner | 55e614a | 2014-10-29 16:58:59 +0100 | [diff] [blame] | 356 | self.assertEqual(re.split(":", ":a:b::c", maxsplit=2), ['', 'a', 'b::c']) |
| 357 | self.assertEqual(re.split(':', 'a:b:c:d', maxsplit=2), ['a', 'b', 'c:d']) |
| 358 | self.assertEqual(re.split("(:)", ":a:b::c", maxsplit=2), |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 359 | ['', ':', 'a', ':', 'b::c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 360 | self.assertEqual(re.split("(:+)", ":a:b::c", maxsplit=2), |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 361 | ['', ':', 'a', ':', 'b::c']) |
Serhiy Storchaka | 83e8027 | 2015-02-03 11:04:19 +0200 | [diff] [blame] | 362 | with self.assertWarns(FutureWarning): |
| 363 | self.assertEqual(re.split("(:*)", ":a:b::c", maxsplit=2), |
| 364 | ['', ':', 'a', ':', 'b::c']) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 365 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 366 | def test_re_findall(self): |
| 367 | self.assertEqual(re.findall(":+", "abc"), []) |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 368 | for string in "a:b::c:::d", S("a:b::c:::d"): |
| 369 | self.assertTypedEqual(re.findall(":+", string), |
| 370 | [":", "::", ":::"]) |
| 371 | self.assertTypedEqual(re.findall("(:+)", string), |
| 372 | [":", "::", ":::"]) |
| 373 | self.assertTypedEqual(re.findall("(:)(:*)", string), |
| 374 | [(":", ""), (":", ":"), (":", "::")]) |
| 375 | for string in (b"a:b::c:::d", B(b"a:b::c:::d"), bytearray(b"a:b::c:::d"), |
| 376 | memoryview(b"a:b::c:::d")): |
| 377 | self.assertTypedEqual(re.findall(b":+", string), |
| 378 | [b":", b"::", b":::"]) |
| 379 | self.assertTypedEqual(re.findall(b"(:+)", string), |
| 380 | [b":", b"::", b":::"]) |
| 381 | self.assertTypedEqual(re.findall(b"(:)(:*)", string), |
| 382 | [(b":", b""), (b":", b":"), (b":", b"::")]) |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 383 | for x in ("\xe0", "\u0430", "\U0001d49c"): |
| 384 | xx = x * 2 |
| 385 | xxx = x * 3 |
| 386 | string = "a%sb%sc%sd" % (x, xx, xxx) |
| 387 | self.assertEqual(re.findall("%s+" % x, string), [x, xx, xxx]) |
| 388 | self.assertEqual(re.findall("(%s+)" % x, string), [x, xx, xxx]) |
| 389 | self.assertEqual(re.findall("(%s)(%s*)" % (x, x), string), |
| 390 | [(x, ""), (x, x), (x, xx)]) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 391 | |
Skip Montanaro | 5ba0054 | 2003-04-25 16:00:14 +0000 | [diff] [blame] | 392 | def test_bug_117612(self): |
| 393 | self.assertEqual(re.findall(r"(a|(b))", "aba"), |
| 394 | [("a", ""),("b", "b"),("a", "")]) |
| 395 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 396 | def test_re_match(self): |
Serhiy Storchaka | 2532497 | 2013-10-16 12:46:28 +0300 | [diff] [blame] | 397 | for string in 'a', S('a'): |
| 398 | self.assertEqual(re.match('a', string).groups(), ()) |
| 399 | self.assertEqual(re.match('(a)', string).groups(), ('a',)) |
| 400 | self.assertEqual(re.match('(a)', string).group(0), 'a') |
| 401 | self.assertEqual(re.match('(a)', string).group(1), 'a') |
| 402 | self.assertEqual(re.match('(a)', string).group(1, 1), ('a', 'a')) |
| 403 | for string in b'a', B(b'a'), bytearray(b'a'), memoryview(b'a'): |
| 404 | self.assertEqual(re.match(b'a', string).groups(), ()) |
| 405 | self.assertEqual(re.match(b'(a)', string).groups(), (b'a',)) |
| 406 | self.assertEqual(re.match(b'(a)', string).group(0), b'a') |
| 407 | self.assertEqual(re.match(b'(a)', string).group(1), b'a') |
| 408 | self.assertEqual(re.match(b'(a)', string).group(1, 1), (b'a', b'a')) |
Serhiy Storchaka | 9eabac6 | 2013-10-26 10:45:48 +0300 | [diff] [blame] | 409 | for a in ("\xe0", "\u0430", "\U0001d49c"): |
| 410 | self.assertEqual(re.match(a, a).groups(), ()) |
| 411 | self.assertEqual(re.match('(%s)' % a, a).groups(), (a,)) |
| 412 | self.assertEqual(re.match('(%s)' % a, a).group(0), a) |
| 413 | self.assertEqual(re.match('(%s)' % a, a).group(1), a) |
| 414 | self.assertEqual(re.match('(%s)' % a, a).group(1, 1), (a, a)) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 415 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 416 | pat = re.compile('((a)|(b))(c)?') |
| 417 | self.assertEqual(pat.match('a').groups(), ('a', 'a', None, None)) |
| 418 | self.assertEqual(pat.match('b').groups(), ('b', None, 'b', None)) |
| 419 | self.assertEqual(pat.match('ac').groups(), ('a', 'a', None, 'c')) |
| 420 | self.assertEqual(pat.match('bc').groups(), ('b', None, 'b', 'c')) |
| 421 | self.assertEqual(pat.match('bc').groups(""), ('b', "", 'b', 'c')) |
Guido van Rossum | 8430c58 | 1998-04-03 21:47:12 +0000 | [diff] [blame] | 422 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 423 | pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?') |
| 424 | self.assertEqual(pat.match('a').group(1, 2, 3), ('a', None, None)) |
| 425 | self.assertEqual(pat.match('b').group('a1', 'b2', 'c3'), |
| 426 | (None, 'b', None)) |
| 427 | self.assertEqual(pat.match('ac').group(1, 'b2', 3), ('a', None, 'c')) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 428 | |
Serhiy Storchaka | 977b3ac | 2016-06-18 16:48:07 +0300 | [diff] [blame] | 429 | def test_group(self): |
| 430 | class Index: |
| 431 | def __init__(self, value): |
| 432 | self.value = value |
| 433 | def __index__(self): |
| 434 | return self.value |
| 435 | # A single group |
| 436 | m = re.match('(a)(b)', 'ab') |
| 437 | self.assertEqual(m.group(), 'ab') |
| 438 | self.assertEqual(m.group(0), 'ab') |
| 439 | self.assertEqual(m.group(1), 'a') |
| 440 | self.assertEqual(m.group(Index(1)), 'a') |
| 441 | self.assertRaises(IndexError, m.group, -1) |
| 442 | self.assertRaises(IndexError, m.group, 3) |
| 443 | self.assertRaises(IndexError, m.group, 1<<1000) |
| 444 | self.assertRaises(IndexError, m.group, Index(1<<1000)) |
| 445 | self.assertRaises(IndexError, m.group, 'x') |
| 446 | # Multiple groups |
| 447 | self.assertEqual(m.group(2, 1), ('b', 'a')) |
| 448 | self.assertEqual(m.group(Index(2), Index(1)), ('b', 'a')) |
| 449 | |
Eric V. Smith | 605bdae | 2016-09-11 08:55:43 -0400 | [diff] [blame] | 450 | def test_match_getitem(self): |
| 451 | pat = re.compile('(?:(?P<a1>a)|(?P<b2>b))(?P<c3>c)?') |
| 452 | |
| 453 | m = pat.match('a') |
| 454 | self.assertEqual(m['a1'], 'a') |
| 455 | self.assertEqual(m['b2'], None) |
| 456 | self.assertEqual(m['c3'], None) |
| 457 | self.assertEqual('a1={a1} b2={b2} c3={c3}'.format_map(m), 'a1=a b2=None c3=None') |
| 458 | self.assertEqual(m[0], 'a') |
| 459 | self.assertEqual(m[1], 'a') |
| 460 | self.assertEqual(m[2], None) |
| 461 | self.assertEqual(m[3], None) |
| 462 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 463 | m['X'] |
| 464 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 465 | m[-1] |
| 466 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 467 | m[4] |
| 468 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 469 | m[0, 1] |
| 470 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 471 | m[(0,)] |
| 472 | with self.assertRaisesRegex(IndexError, 'no such group'): |
| 473 | m[(0, 1)] |
| 474 | with self.assertRaisesRegex(KeyError, 'a2'): |
| 475 | 'a1={a2}'.format_map(m) |
| 476 | |
| 477 | m = pat.match('ac') |
| 478 | self.assertEqual(m['a1'], 'a') |
| 479 | self.assertEqual(m['b2'], None) |
| 480 | self.assertEqual(m['c3'], 'c') |
| 481 | self.assertEqual('a1={a1} b2={b2} c3={c3}'.format_map(m), 'a1=a b2=None c3=c') |
| 482 | self.assertEqual(m[0], 'ac') |
| 483 | self.assertEqual(m[1], 'a') |
| 484 | self.assertEqual(m[2], None) |
| 485 | self.assertEqual(m[3], 'c') |
| 486 | |
| 487 | # Cannot assign. |
| 488 | with self.assertRaises(TypeError): |
| 489 | m[0] = 1 |
| 490 | |
| 491 | # No len(). |
| 492 | self.assertRaises(TypeError, len, m) |
| 493 | |
Serhiy Storchaka | 32eddc1 | 2013-11-23 23:20:30 +0200 | [diff] [blame] | 494 | def test_re_fullmatch(self): |
| 495 | # Issue 16203: Proposal: add re.fullmatch() method. |
| 496 | self.assertEqual(re.fullmatch(r"a", "a").span(), (0, 1)) |
| 497 | for string in "ab", S("ab"): |
| 498 | self.assertEqual(re.fullmatch(r"a|ab", string).span(), (0, 2)) |
| 499 | for string in b"ab", B(b"ab"), bytearray(b"ab"), memoryview(b"ab"): |
| 500 | self.assertEqual(re.fullmatch(br"a|ab", string).span(), (0, 2)) |
| 501 | for a, b in "\xe0\xdf", "\u0430\u0431", "\U0001d49c\U0001d49e": |
| 502 | r = r"%s|%s" % (a, a + b) |
| 503 | self.assertEqual(re.fullmatch(r, a + b).span(), (0, 2)) |
| 504 | self.assertEqual(re.fullmatch(r".*?$", "abc").span(), (0, 3)) |
| 505 | self.assertEqual(re.fullmatch(r".*?", "abc").span(), (0, 3)) |
| 506 | self.assertEqual(re.fullmatch(r"a.*?b", "ab").span(), (0, 2)) |
| 507 | self.assertEqual(re.fullmatch(r"a.*?b", "abb").span(), (0, 3)) |
| 508 | self.assertEqual(re.fullmatch(r"a.*?b", "axxb").span(), (0, 4)) |
| 509 | self.assertIsNone(re.fullmatch(r"a+", "ab")) |
| 510 | self.assertIsNone(re.fullmatch(r"abc$", "abc\n")) |
| 511 | self.assertIsNone(re.fullmatch(r"abc\Z", "abc\n")) |
| 512 | self.assertIsNone(re.fullmatch(r"(?m)abc$", "abc\n")) |
| 513 | self.assertEqual(re.fullmatch(r"ab(?=c)cd", "abcd").span(), (0, 4)) |
| 514 | self.assertEqual(re.fullmatch(r"ab(?<=b)cd", "abcd").span(), (0, 4)) |
| 515 | self.assertEqual(re.fullmatch(r"(?=a|ab)ab", "ab").span(), (0, 2)) |
| 516 | |
| 517 | self.assertEqual( |
| 518 | re.compile(r"bc").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3)) |
| 519 | self.assertEqual( |
| 520 | re.compile(r".*?$").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3)) |
| 521 | self.assertEqual( |
| 522 | re.compile(r".*?").fullmatch("abcd", pos=1, endpos=3).span(), (1, 3)) |
| 523 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 524 | def test_re_groupref_exists(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 525 | self.assertEqual(re.match(r'^(\()?([^()]+)(?(1)\))$', '(a)').groups(), |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 526 | ('(', 'a')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 527 | self.assertEqual(re.match(r'^(\()?([^()]+)(?(1)\))$', 'a').groups(), |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 528 | (None, 'a')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 529 | self.assertIsNone(re.match(r'^(\()?([^()]+)(?(1)\))$', 'a)')) |
| 530 | self.assertIsNone(re.match(r'^(\()?([^()]+)(?(1)\))$', '(a')) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 531 | self.assertEqual(re.match('^(?:(a)|c)((?(1)b|d))$', 'ab').groups(), |
| 532 | ('a', 'b')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 533 | self.assertEqual(re.match(r'^(?:(a)|c)((?(1)b|d))$', 'cd').groups(), |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 534 | (None, 'd')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 535 | self.assertEqual(re.match(r'^(?:(a)|c)((?(1)|d))$', 'cd').groups(), |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 536 | (None, 'd')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 537 | self.assertEqual(re.match(r'^(?:(a)|c)((?(1)|d))$', 'a').groups(), |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 538 | ('a', '')) |
| 539 | |
Michael W. Hudson | e7fa1af | 2005-06-03 13:55:58 +0000 | [diff] [blame] | 540 | # Tests for bug #1177831: exercise groups other than the first group |
| 541 | p = re.compile('(?P<g1>a)(?P<g2>b)?((?(g2)c|d))') |
| 542 | self.assertEqual(p.match('abc').groups(), |
| 543 | ('a', 'b', 'c')) |
| 544 | self.assertEqual(p.match('ad').groups(), |
| 545 | ('a', None, 'd')) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 546 | self.assertIsNone(p.match('abd')) |
| 547 | self.assertIsNone(p.match('ac')) |
Michael W. Hudson | e7fa1af | 2005-06-03 13:55:58 +0000 | [diff] [blame] | 548 | |
Serhiy Storchaka | 9baa5b2 | 2014-09-29 22:49:23 +0300 | [diff] [blame] | 549 | # Support > 100 groups. |
| 550 | pat = '|'.join('x(?P<a%d>%x)y' % (i, i) for i in range(1, 200 + 1)) |
| 551 | pat = '(?:%s)(?(200)z)' % pat |
| 552 | self.assertEqual(re.match(pat, 'xc8yz').span(), (0, 5)) |
Andrew M. Kuchling | 3554cad | 2005-06-02 13:38:45 +0000 | [diff] [blame] | 553 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 554 | self.checkPatternError(r'(?P<a>)(?(0))', 'bad group number', 10) |
| 555 | self.checkPatternError(r'()(?(1)a|b', |
| 556 | 'missing ), unterminated subpattern', 2) |
| 557 | self.checkPatternError(r'()(?(1)a|b|c)', |
| 558 | 'conditional backref with more than ' |
| 559 | 'two branches', 10) |
| 560 | |
| 561 | def test_re_groupref_overflow(self): |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 562 | from sre_constants import MAXGROUPS |
| 563 | self.checkTemplateError('()', r'\g<%s>' % MAXGROUPS, 'xx', |
| 564 | 'invalid group reference %d' % MAXGROUPS, 3) |
| 565 | self.checkPatternError(r'(?P<a>)(?(%d))' % MAXGROUPS, |
| 566 | 'invalid group reference %d' % MAXGROUPS, 10) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 567 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 568 | def test_re_groupref(self): |
| 569 | self.assertEqual(re.match(r'^(\|)?([^()]+)\1$', '|a|').groups(), |
| 570 | ('|', 'a')) |
| 571 | self.assertEqual(re.match(r'^(\|)?([^()]+)\1?$', 'a').groups(), |
| 572 | (None, 'a')) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 573 | self.assertIsNone(re.match(r'^(\|)?([^()]+)\1$', 'a|')) |
| 574 | self.assertIsNone(re.match(r'^(\|)?([^()]+)\1$', '|a')) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 575 | self.assertEqual(re.match(r'^(?:(a)|c)(\1)$', 'aa').groups(), |
| 576 | ('a', 'a')) |
| 577 | self.assertEqual(re.match(r'^(?:(a)|c)(\1)?$', 'c').groups(), |
| 578 | (None, None)) |
| 579 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 580 | self.checkPatternError(r'(abc\1)', 'cannot refer to an open group', 4) |
| 581 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 582 | def test_groupdict(self): |
| 583 | self.assertEqual(re.match('(?P<first>first) (?P<second>second)', |
| 584 | 'first second').groupdict(), |
| 585 | {'first':'first', 'second':'second'}) |
| 586 | |
| 587 | def test_expand(self): |
| 588 | self.assertEqual(re.match("(?P<first>first) (?P<second>second)", |
| 589 | "first second") |
| 590 | .expand(r"\2 \1 \g<second> \g<first>"), |
| 591 | "second first second first") |
Serhiy Storchaka | 7438e4b | 2014-10-10 11:06:31 +0300 | [diff] [blame] | 592 | self.assertEqual(re.match("(?P<first>first)|(?P<second>second)", |
| 593 | "first") |
| 594 | .expand(r"\2 \g<second>"), |
| 595 | " ") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 596 | |
| 597 | def test_repeat_minmax(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 598 | self.assertIsNone(re.match(r"^(\w){1}$", "abc")) |
| 599 | self.assertIsNone(re.match(r"^(\w){1}?$", "abc")) |
| 600 | self.assertIsNone(re.match(r"^(\w){1,2}$", "abc")) |
| 601 | self.assertIsNone(re.match(r"^(\w){1,2}?$", "abc")) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 602 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 603 | self.assertEqual(re.match(r"^(\w){3}$", "abc").group(1), "c") |
| 604 | self.assertEqual(re.match(r"^(\w){1,3}$", "abc").group(1), "c") |
| 605 | self.assertEqual(re.match(r"^(\w){1,4}$", "abc").group(1), "c") |
| 606 | self.assertEqual(re.match(r"^(\w){3,4}?$", "abc").group(1), "c") |
| 607 | self.assertEqual(re.match(r"^(\w){3}?$", "abc").group(1), "c") |
| 608 | self.assertEqual(re.match(r"^(\w){1,3}?$", "abc").group(1), "c") |
| 609 | self.assertEqual(re.match(r"^(\w){1,4}?$", "abc").group(1), "c") |
| 610 | self.assertEqual(re.match(r"^(\w){3,4}?$", "abc").group(1), "c") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 611 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 612 | self.assertIsNone(re.match(r"^x{1}$", "xxx")) |
| 613 | self.assertIsNone(re.match(r"^x{1}?$", "xxx")) |
| 614 | self.assertIsNone(re.match(r"^x{1,2}$", "xxx")) |
| 615 | self.assertIsNone(re.match(r"^x{1,2}?$", "xxx")) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 616 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 617 | self.assertTrue(re.match(r"^x{3}$", "xxx")) |
| 618 | self.assertTrue(re.match(r"^x{1,3}$", "xxx")) |
| 619 | self.assertTrue(re.match(r"^x{3,3}$", "xxx")) |
| 620 | self.assertTrue(re.match(r"^x{1,4}$", "xxx")) |
| 621 | self.assertTrue(re.match(r"^x{3,4}?$", "xxx")) |
| 622 | self.assertTrue(re.match(r"^x{3}?$", "xxx")) |
| 623 | self.assertTrue(re.match(r"^x{1,3}?$", "xxx")) |
| 624 | self.assertTrue(re.match(r"^x{1,4}?$", "xxx")) |
| 625 | self.assertTrue(re.match(r"^x{3,4}?$", "xxx")) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 626 | |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 627 | self.assertIsNone(re.match(r"^x{}$", "xxx")) |
| 628 | self.assertTrue(re.match(r"^x{}$", "x{}")) |
Gustavo Niemeyer | 6fa0c5a | 2005-09-14 08:54:39 +0000 | [diff] [blame] | 629 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 630 | self.checkPatternError(r'x{2,1}', |
| 631 | 'min repeat greater than max repeat', 2) |
| 632 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 633 | def test_getattr(self): |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 634 | self.assertEqual(re.compile("(?i)(a)(b)").pattern, "(?i)(a)(b)") |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 635 | self.assertEqual(re.compile("(?i)(a)(b)").flags, re.I | re.U) |
Amaury Forgeot d'Arc | e43d33a | 2008-07-02 20:50:16 +0000 | [diff] [blame] | 636 | self.assertEqual(re.compile("(?i)(a)(b)").groups, 2) |
| 637 | self.assertEqual(re.compile("(?i)(a)(b)").groupindex, {}) |
| 638 | self.assertEqual(re.compile("(?i)(?P<first>a)(?P<other>b)").groupindex, |
| 639 | {'first': 1, 'other': 2}) |
| 640 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 641 | self.assertEqual(re.match("(a)", "a").pos, 0) |
| 642 | self.assertEqual(re.match("(a)", "a").endpos, 1) |
| 643 | self.assertEqual(re.match("(a)", "a").string, "a") |
| 644 | self.assertEqual(re.match("(a)", "a").regs, ((0, 1), (0, 1))) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 645 | self.assertTrue(re.match("(a)", "a").re) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 646 | |
Serhiy Storchaka | 07360df | 2015-03-30 01:01:48 +0300 | [diff] [blame] | 647 | # Issue 14260. groupindex should be non-modifiable mapping. |
| 648 | p = re.compile(r'(?i)(?P<first>a)(?P<other>b)') |
| 649 | self.assertEqual(sorted(p.groupindex), ['first', 'other']) |
| 650 | self.assertEqual(p.groupindex['other'], 2) |
| 651 | with self.assertRaises(TypeError): |
| 652 | p.groupindex['other'] = 0 |
| 653 | self.assertEqual(p.groupindex['other'], 2) |
| 654 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 655 | def test_special_escapes(self): |
| 656 | self.assertEqual(re.search(r"\b(b.)\b", |
| 657 | "abcd abc bcd bx").group(1), "bx") |
| 658 | self.assertEqual(re.search(r"\B(b.)\B", |
| 659 | "abc bcd bc abxd").group(1), "bx") |
| 660 | self.assertEqual(re.search(r"\b(b.)\b", |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 661 | "abcd abc bcd bx", re.ASCII).group(1), "bx") |
| 662 | self.assertEqual(re.search(r"\B(b.)\B", |
| 663 | "abc bcd bc abxd", re.ASCII).group(1), "bx") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 664 | self.assertEqual(re.search(r"^abc$", "\nabc\n", re.M).group(0), "abc") |
| 665 | self.assertEqual(re.search(r"^\Aabc\Z$", "abc", re.M).group(0), "abc") |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 666 | self.assertIsNone(re.search(r"^\Aabc\Z$", "\nabc\n", re.M)) |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 667 | self.assertEqual(re.search(br"\b(b.)\b", |
| 668 | b"abcd abc bcd bx").group(1), b"bx") |
| 669 | self.assertEqual(re.search(br"\B(b.)\B", |
| 670 | b"abc bcd bc abxd").group(1), b"bx") |
| 671 | self.assertEqual(re.search(br"\b(b.)\b", |
| 672 | b"abcd abc bcd bx", re.LOCALE).group(1), b"bx") |
| 673 | self.assertEqual(re.search(br"\B(b.)\B", |
| 674 | b"abc bcd bc abxd", re.LOCALE).group(1), b"bx") |
| 675 | self.assertEqual(re.search(br"^abc$", b"\nabc\n", re.M).group(0), b"abc") |
| 676 | self.assertEqual(re.search(br"^\Aabc\Z$", b"abc", re.M).group(0), b"abc") |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 677 | self.assertIsNone(re.search(br"^\Aabc\Z$", b"\nabc\n", re.M)) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 678 | self.assertEqual(re.search(r"\d\D\w\W\s\S", |
| 679 | "1aa! a").group(0), "1aa! a") |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 680 | self.assertEqual(re.search(br"\d\D\w\W\s\S", |
| 681 | b"1aa! a").group(0), b"1aa! a") |
| 682 | self.assertEqual(re.search(r"\d\D\w\W\s\S", |
| 683 | "1aa! a", re.ASCII).group(0), "1aa! a") |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 684 | self.assertEqual(re.search(br"\d\D\w\W\s\S", |
| 685 | b"1aa! a", re.LOCALE).group(0), b"1aa! a") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 686 | |
Serhiy Storchaka | b99c132 | 2014-11-10 14:38:16 +0200 | [diff] [blame] | 687 | def test_other_escapes(self): |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 688 | self.checkPatternError("\\", 'bad escape (end of pattern)', 0) |
Serhiy Storchaka | b99c132 | 2014-11-10 14:38:16 +0200 | [diff] [blame] | 689 | self.assertEqual(re.match(r"\(", '(').group(), '(') |
| 690 | self.assertIsNone(re.match(r"\(", ')')) |
| 691 | self.assertEqual(re.match(r"\\", '\\').group(), '\\') |
Serhiy Storchaka | b99c132 | 2014-11-10 14:38:16 +0200 | [diff] [blame] | 692 | self.assertEqual(re.match(r"[\]]", ']').group(), ']') |
| 693 | self.assertIsNone(re.match(r"[\]]", '[')) |
| 694 | self.assertEqual(re.match(r"[a\-c]", '-').group(), '-') |
| 695 | self.assertIsNone(re.match(r"[a\-c]", 'b')) |
| 696 | self.assertEqual(re.match(r"[\^a]+", 'a^').group(), 'a^') |
| 697 | self.assertIsNone(re.match(r"[\^a]+", 'b')) |
Serhiy Storchaka | a54aae0 | 2015-03-24 22:58:14 +0200 | [diff] [blame] | 698 | re.purge() # for warnings |
| 699 | for c in 'ceghijklmopqyzCEFGHIJKLMNOPQRTVXY': |
| 700 | with self.subTest(c): |
Serhiy Storchaka | 9bd85b8 | 2016-06-11 19:15:00 +0300 | [diff] [blame] | 701 | self.assertRaises(re.error, re.compile, '\\%c' % c) |
Serhiy Storchaka | a54aae0 | 2015-03-24 22:58:14 +0200 | [diff] [blame] | 702 | for c in 'ceghijklmopqyzABCEFGHIJKLMNOPQRTVXYZ': |
| 703 | with self.subTest(c): |
Serhiy Storchaka | 9bd85b8 | 2016-06-11 19:15:00 +0300 | [diff] [blame] | 704 | self.assertRaises(re.error, re.compile, '[\\%c]' % c) |
Serhiy Storchaka | b99c132 | 2014-11-10 14:38:16 +0200 | [diff] [blame] | 705 | |
Ezio Melotti | 5a045b9 | 2012-02-29 11:48:44 +0200 | [diff] [blame] | 706 | def test_string_boundaries(self): |
| 707 | # See http://bugs.python.org/issue10713 |
| 708 | self.assertEqual(re.search(r"\b(abc)\b", "abc").group(1), |
| 709 | "abc") |
| 710 | # There's a word boundary at the start of a string. |
| 711 | self.assertTrue(re.match(r"\b", "abc")) |
| 712 | # A non-empty string includes a non-boundary zero-length match. |
| 713 | self.assertTrue(re.search(r"\B", "abc")) |
| 714 | # There is no non-boundary match at the start of a string. |
| 715 | self.assertFalse(re.match(r"\B", "abc")) |
| 716 | # However, an empty string contains no word boundaries, and also no |
| 717 | # non-boundaries. |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 718 | self.assertIsNone(re.search(r"\B", "")) |
Ezio Melotti | 5a045b9 | 2012-02-29 11:48:44 +0200 | [diff] [blame] | 719 | # This one is questionable and different from the perlre behaviour, |
| 720 | # but describes current behavior. |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 721 | self.assertIsNone(re.search(r"\b", "")) |
Ezio Melotti | 5a045b9 | 2012-02-29 11:48:44 +0200 | [diff] [blame] | 722 | # A single word-character string has two boundaries, but no |
| 723 | # non-boundary gaps. |
| 724 | self.assertEqual(len(re.findall(r"\b", "a")), 2) |
| 725 | self.assertEqual(len(re.findall(r"\B", "a")), 0) |
| 726 | # If there are no words, there are no boundaries |
| 727 | self.assertEqual(len(re.findall(r"\b", " ")), 0) |
| 728 | self.assertEqual(len(re.findall(r"\b", " ")), 0) |
| 729 | # Can match around the whitespace. |
| 730 | self.assertEqual(len(re.findall(r"\B", " ")), 2) |
| 731 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 732 | def test_bigcharset(self): |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 733 | self.assertEqual(re.match("([\u2222\u2223])", |
| 734 | "\u2222").group(1), "\u2222") |
Serhiy Storchaka | be80fc9 | 2013-10-24 22:02:58 +0300 | [diff] [blame] | 735 | r = '[%s]' % ''.join(map(chr, range(256, 2**16, 255))) |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 736 | self.assertEqual(re.match(r, "\uff01").group(), "\uff01") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 737 | |
Antoine Pitrou | 39bdad8 | 2012-11-20 22:30:42 +0100 | [diff] [blame] | 738 | def test_big_codesize(self): |
| 739 | # Issue #1160 |
| 740 | r = re.compile('|'.join(('%d'%x for x in range(10000)))) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 741 | self.assertTrue(r.match('1000')) |
| 742 | self.assertTrue(r.match('9999')) |
Antoine Pitrou | 39bdad8 | 2012-11-20 22:30:42 +0100 | [diff] [blame] | 743 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 744 | def test_anyall(self): |
| 745 | self.assertEqual(re.match("a.b", "a\nb", re.DOTALL).group(0), |
| 746 | "a\nb") |
| 747 | self.assertEqual(re.match("a.*b", "a\n\nb", re.DOTALL).group(0), |
| 748 | "a\n\nb") |
| 749 | |
Serhiy Storchaka | 4eea62f | 2015-02-21 10:07:35 +0200 | [diff] [blame] | 750 | def test_lookahead(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 751 | self.assertEqual(re.match(r"(a(?=\s[^a]))", "a b").group(1), "a") |
| 752 | self.assertEqual(re.match(r"(a(?=\s[^a]*))", "a b").group(1), "a") |
| 753 | self.assertEqual(re.match(r"(a(?=\s[abc]))", "a b").group(1), "a") |
| 754 | self.assertEqual(re.match(r"(a(?=\s[abc]*))", "a bc").group(1), "a") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 755 | self.assertEqual(re.match(r"(a)(?=\s\1)", "a a").group(1), "a") |
| 756 | self.assertEqual(re.match(r"(a)(?=\s\1*)", "a aa").group(1), "a") |
| 757 | self.assertEqual(re.match(r"(a)(?=\s(abc|a))", "a a").group(1), "a") |
| 758 | |
| 759 | self.assertEqual(re.match(r"(a(?!\s[^a]))", "a a").group(1), "a") |
| 760 | self.assertEqual(re.match(r"(a(?!\s[abc]))", "a d").group(1), "a") |
| 761 | self.assertEqual(re.match(r"(a)(?!\s\1)", "a b").group(1), "a") |
| 762 | self.assertEqual(re.match(r"(a)(?!\s(abc|a))", "a b").group(1), "a") |
| 763 | |
Serhiy Storchaka | 4eea62f | 2015-02-21 10:07:35 +0200 | [diff] [blame] | 764 | # Group reference. |
| 765 | self.assertTrue(re.match(r'(a)b(?=\1)a', 'aba')) |
| 766 | self.assertIsNone(re.match(r'(a)b(?=\1)c', 'abac')) |
| 767 | # Conditional group reference. |
| 768 | self.assertTrue(re.match(r'(?:(a)|(x))b(?=(?(2)x|c))c', 'abc')) |
| 769 | self.assertIsNone(re.match(r'(?:(a)|(x))b(?=(?(2)c|x))c', 'abc')) |
| 770 | self.assertTrue(re.match(r'(?:(a)|(x))b(?=(?(2)x|c))c', 'abc')) |
| 771 | self.assertIsNone(re.match(r'(?:(a)|(x))b(?=(?(1)b|x))c', 'abc')) |
| 772 | self.assertTrue(re.match(r'(?:(a)|(x))b(?=(?(1)c|x))c', 'abc')) |
| 773 | # Group used before defined. |
| 774 | self.assertTrue(re.match(r'(a)b(?=(?(2)x|c))(c)', 'abc')) |
| 775 | self.assertIsNone(re.match(r'(a)b(?=(?(2)b|x))(c)', 'abc')) |
| 776 | self.assertTrue(re.match(r'(a)b(?=(?(1)c|x))(c)', 'abc')) |
| 777 | |
| 778 | def test_lookbehind(self): |
| 779 | self.assertTrue(re.match(r'ab(?<=b)c', 'abc')) |
| 780 | self.assertIsNone(re.match(r'ab(?<=c)c', 'abc')) |
| 781 | self.assertIsNone(re.match(r'ab(?<!b)c', 'abc')) |
| 782 | self.assertTrue(re.match(r'ab(?<!c)c', 'abc')) |
| 783 | # Group reference. |
| 784 | self.assertTrue(re.match(r'(a)a(?<=\1)c', 'aac')) |
| 785 | self.assertIsNone(re.match(r'(a)b(?<=\1)a', 'abaa')) |
| 786 | self.assertIsNone(re.match(r'(a)a(?<!\1)c', 'aac')) |
| 787 | self.assertTrue(re.match(r'(a)b(?<!\1)a', 'abaa')) |
| 788 | # Conditional group reference. |
| 789 | self.assertIsNone(re.match(r'(?:(a)|(x))b(?<=(?(2)x|c))c', 'abc')) |
| 790 | self.assertIsNone(re.match(r'(?:(a)|(x))b(?<=(?(2)b|x))c', 'abc')) |
| 791 | self.assertTrue(re.match(r'(?:(a)|(x))b(?<=(?(2)x|b))c', 'abc')) |
| 792 | self.assertIsNone(re.match(r'(?:(a)|(x))b(?<=(?(1)c|x))c', 'abc')) |
| 793 | self.assertTrue(re.match(r'(?:(a)|(x))b(?<=(?(1)b|x))c', 'abc')) |
| 794 | # Group used before defined. |
| 795 | self.assertRaises(re.error, re.compile, r'(a)b(?<=(?(2)b|x))(c)') |
| 796 | self.assertIsNone(re.match(r'(a)b(?<=(?(1)c|x))(c)', 'abc')) |
| 797 | self.assertTrue(re.match(r'(a)b(?<=(?(1)b|x))(c)', 'abc')) |
| 798 | # Group defined in the same lookbehind pattern |
| 799 | self.assertRaises(re.error, re.compile, r'(a)b(?<=(.)\2)(c)') |
| 800 | self.assertRaises(re.error, re.compile, r'(a)b(?<=(?P<a>.)(?P=a))(c)') |
| 801 | self.assertRaises(re.error, re.compile, r'(a)b(?<=(a)(?(2)b|x))(c)') |
| 802 | self.assertRaises(re.error, re.compile, r'(a)b(?<=(.)(?<=\2))(c)') |
| 803 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 804 | def test_ignore_case(self): |
Benjamin Peterson | a786b02 | 2008-08-25 21:05:21 +0000 | [diff] [blame] | 805 | self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC") |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 806 | self.assertEqual(re.match(b"abc", b"ABC", re.I).group(0), b"ABC") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 807 | self.assertEqual(re.match(r"(a\s[^a])", "a b", re.I).group(1), "a b") |
| 808 | self.assertEqual(re.match(r"(a\s[^a]*)", "a bb", re.I).group(1), "a bb") |
| 809 | self.assertEqual(re.match(r"(a\s[abc])", "a b", re.I).group(1), "a b") |
| 810 | self.assertEqual(re.match(r"(a\s[abc]*)", "a bb", re.I).group(1), "a bb") |
| 811 | self.assertEqual(re.match(r"((a)\s\2)", "a a", re.I).group(1), "a a") |
| 812 | self.assertEqual(re.match(r"((a)\s\2*)", "a aa", re.I).group(1), "a aa") |
| 813 | self.assertEqual(re.match(r"((a)\s(abc|a))", "a a", re.I).group(1), "a a") |
| 814 | self.assertEqual(re.match(r"((a)\s(abc|a)*)", "a aa", re.I).group(1), "a aa") |
| 815 | |
Serhiy Storchaka | 0c938f6 | 2014-11-10 12:37:16 +0200 | [diff] [blame] | 816 | assert '\u212a'.lower() == 'k' # 'K' |
| 817 | self.assertTrue(re.match(r'K', '\u212a', re.I)) |
| 818 | self.assertTrue(re.match(r'k', '\u212a', re.I)) |
| 819 | self.assertTrue(re.match(r'\u212a', 'K', re.I)) |
| 820 | self.assertTrue(re.match(r'\u212a', 'k', re.I)) |
| 821 | assert '\u017f'.upper() == 'S' # 'ſ' |
| 822 | self.assertTrue(re.match(r'S', '\u017f', re.I)) |
| 823 | self.assertTrue(re.match(r's', '\u017f', re.I)) |
| 824 | self.assertTrue(re.match(r'\u017f', 'S', re.I)) |
| 825 | self.assertTrue(re.match(r'\u017f', 's', re.I)) |
| 826 | assert '\ufb05'.upper() == '\ufb06'.upper() == 'ST' # 'ſt', 'st' |
| 827 | self.assertTrue(re.match(r'\ufb05', '\ufb06', re.I)) |
| 828 | self.assertTrue(re.match(r'\ufb06', '\ufb05', re.I)) |
| 829 | |
| 830 | def test_ignore_case_set(self): |
| 831 | self.assertTrue(re.match(r'[19A]', 'A', re.I)) |
| 832 | self.assertTrue(re.match(r'[19a]', 'a', re.I)) |
| 833 | self.assertTrue(re.match(r'[19a]', 'A', re.I)) |
| 834 | self.assertTrue(re.match(r'[19A]', 'a', re.I)) |
| 835 | self.assertTrue(re.match(br'[19A]', b'A', re.I)) |
| 836 | self.assertTrue(re.match(br'[19a]', b'a', re.I)) |
| 837 | self.assertTrue(re.match(br'[19a]', b'A', re.I)) |
| 838 | self.assertTrue(re.match(br'[19A]', b'a', re.I)) |
| 839 | assert '\u212a'.lower() == 'k' # 'K' |
| 840 | self.assertTrue(re.match(r'[19K]', '\u212a', re.I)) |
| 841 | self.assertTrue(re.match(r'[19k]', '\u212a', re.I)) |
| 842 | self.assertTrue(re.match(r'[19\u212a]', 'K', re.I)) |
| 843 | self.assertTrue(re.match(r'[19\u212a]', 'k', re.I)) |
| 844 | assert '\u017f'.upper() == 'S' # 'ſ' |
| 845 | self.assertTrue(re.match(r'[19S]', '\u017f', re.I)) |
| 846 | self.assertTrue(re.match(r'[19s]', '\u017f', re.I)) |
| 847 | self.assertTrue(re.match(r'[19\u017f]', 'S', re.I)) |
| 848 | self.assertTrue(re.match(r'[19\u017f]', 's', re.I)) |
| 849 | assert '\ufb05'.upper() == '\ufb06'.upper() == 'ST' # 'ſt', 'st' |
| 850 | self.assertTrue(re.match(r'[19\ufb05]', '\ufb06', re.I)) |
| 851 | self.assertTrue(re.match(r'[19\ufb06]', '\ufb05', re.I)) |
| 852 | |
Serhiy Storchaka | 4b8f894 | 2014-10-31 12:36:56 +0200 | [diff] [blame] | 853 | def test_ignore_case_range(self): |
| 854 | # Issues #3511, #17381. |
| 855 | self.assertTrue(re.match(r'[9-a]', '_', re.I)) |
| 856 | self.assertIsNone(re.match(r'[9-A]', '_', re.I)) |
| 857 | self.assertTrue(re.match(br'[9-a]', b'_', re.I)) |
| 858 | self.assertIsNone(re.match(br'[9-A]', b'_', re.I)) |
| 859 | self.assertTrue(re.match(r'[\xc0-\xde]', '\xd7', re.I)) |
| 860 | self.assertIsNone(re.match(r'[\xc0-\xde]', '\xf7', re.I)) |
| 861 | self.assertTrue(re.match(r'[\xe0-\xfe]', '\xf7', re.I)) |
| 862 | self.assertIsNone(re.match(r'[\xe0-\xfe]', '\xd7', re.I)) |
| 863 | self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0450', re.I)) |
| 864 | self.assertTrue(re.match(r'[\u0430-\u045f]', '\u0400', re.I)) |
| 865 | self.assertTrue(re.match(r'[\u0400-\u042f]', '\u0450', re.I)) |
| 866 | self.assertTrue(re.match(r'[\u0400-\u042f]', '\u0400', re.I)) |
| 867 | self.assertTrue(re.match(r'[\U00010428-\U0001044f]', '\U00010428', re.I)) |
| 868 | self.assertTrue(re.match(r'[\U00010428-\U0001044f]', '\U00010400', re.I)) |
| 869 | self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010428', re.I)) |
| 870 | self.assertTrue(re.match(r'[\U00010400-\U00010427]', '\U00010400', re.I)) |
| 871 | |
Serhiy Storchaka | 0c938f6 | 2014-11-10 12:37:16 +0200 | [diff] [blame] | 872 | assert '\u212a'.lower() == 'k' # 'K' |
| 873 | self.assertTrue(re.match(r'[J-M]', '\u212a', re.I)) |
| 874 | self.assertTrue(re.match(r'[j-m]', '\u212a', re.I)) |
| 875 | self.assertTrue(re.match(r'[\u2129-\u212b]', 'K', re.I)) |
| 876 | self.assertTrue(re.match(r'[\u2129-\u212b]', 'k', re.I)) |
| 877 | assert '\u017f'.upper() == 'S' # 'ſ' |
| 878 | self.assertTrue(re.match(r'[R-T]', '\u017f', re.I)) |
| 879 | self.assertTrue(re.match(r'[r-t]', '\u017f', re.I)) |
| 880 | self.assertTrue(re.match(r'[\u017e-\u0180]', 'S', re.I)) |
| 881 | self.assertTrue(re.match(r'[\u017e-\u0180]', 's', re.I)) |
| 882 | assert '\ufb05'.upper() == '\ufb06'.upper() == 'ST' # 'ſt', 'st' |
| 883 | self.assertTrue(re.match(r'[\ufb04-\ufb05]', '\ufb06', re.I)) |
| 884 | self.assertTrue(re.match(r'[\ufb06-\ufb07]', '\ufb05', re.I)) |
| 885 | |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 886 | def test_category(self): |
| 887 | self.assertEqual(re.match(r"(\s)", " ").group(1), " ") |
| 888 | |
| 889 | def test_getlower(self): |
| 890 | import _sre |
| 891 | self.assertEqual(_sre.getlower(ord('A'), 0), ord('a')) |
| 892 | self.assertEqual(_sre.getlower(ord('A'), re.LOCALE), ord('a')) |
| 893 | self.assertEqual(_sre.getlower(ord('A'), re.UNICODE), ord('a')) |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 894 | self.assertEqual(_sre.getlower(ord('A'), re.ASCII), ord('a')) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 895 | |
| 896 | self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC") |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 897 | self.assertEqual(re.match(b"abc", b"ABC", re.I).group(0), b"ABC") |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 898 | self.assertEqual(re.match("abc", "ABC", re.I|re.A).group(0), "ABC") |
| 899 | self.assertEqual(re.match(b"abc", b"ABC", re.I|re.L).group(0), b"ABC") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 900 | |
| 901 | def test_not_literal(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 902 | self.assertEqual(re.search(r"\s([^a])", " b").group(1), "b") |
| 903 | self.assertEqual(re.search(r"\s([^a]*)", " bb").group(1), "bb") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 904 | |
| 905 | def test_search_coverage(self): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 906 | self.assertEqual(re.search(r"\s(b)", " b").group(1), "b") |
| 907 | self.assertEqual(re.search(r"a\s", "a ").group(0), "a ") |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 908 | |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 909 | def assertMatch(self, pattern, text, match=None, span=None, |
| 910 | matcher=re.match): |
| 911 | if match is None and span is None: |
| 912 | # the pattern matches the whole text |
| 913 | match = text |
| 914 | span = (0, len(text)) |
| 915 | elif match is None or span is None: |
| 916 | raise ValueError('If match is not None, span should be specified ' |
| 917 | '(and vice versa).') |
| 918 | m = matcher(pattern, text) |
| 919 | self.assertTrue(m) |
| 920 | self.assertEqual(m.group(), match) |
| 921 | self.assertEqual(m.span(), span) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 922 | |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 923 | def test_re_escape(self): |
Ezio Melotti | 88fdeb4 | 2011-04-10 12:59:16 +0300 | [diff] [blame] | 924 | alnum_chars = string.ascii_letters + string.digits + '_' |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 925 | p = ''.join(chr(i) for i in range(256)) |
| 926 | for c in p: |
| 927 | if c in alnum_chars: |
| 928 | self.assertEqual(re.escape(c), c) |
| 929 | elif c == '\x00': |
| 930 | self.assertEqual(re.escape(c), '\\000') |
| 931 | else: |
| 932 | self.assertEqual(re.escape(c), '\\' + c) |
| 933 | self.assertMatch(re.escape(c), c) |
| 934 | self.assertMatch(re.escape(p), p) |
Guido van Rossum | 4994657 | 1997-07-18 04:26:25 +0000 | [diff] [blame] | 935 | |
Guido van Rossum | 698280d | 2008-09-10 17:44:35 +0000 | [diff] [blame] | 936 | def test_re_escape_byte(self): |
Ezio Melotti | 88fdeb4 | 2011-04-10 12:59:16 +0300 | [diff] [blame] | 937 | alnum_chars = (string.ascii_letters + string.digits + '_').encode('ascii') |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 938 | p = bytes(range(256)) |
| 939 | for i in p: |
Guido van Rossum | 698280d | 2008-09-10 17:44:35 +0000 | [diff] [blame] | 940 | b = bytes([i]) |
Ezio Melotti | d2114eb | 2011-03-25 14:08:44 +0200 | [diff] [blame] | 941 | if b in alnum_chars: |
| 942 | self.assertEqual(re.escape(b), b) |
| 943 | elif i == 0: |
| 944 | self.assertEqual(re.escape(b), b'\\000') |
| 945 | else: |
| 946 | self.assertEqual(re.escape(b), b'\\' + b) |
| 947 | self.assertMatch(re.escape(b), b) |
| 948 | self.assertMatch(re.escape(p), p) |
Guido van Rossum | 698280d | 2008-09-10 17:44:35 +0000 | [diff] [blame] | 949 | |
Ezio Melotti | 7b9e97b | 2011-03-25 14:09:33 +0200 | [diff] [blame] | 950 | def test_re_escape_non_ascii(self): |
| 951 | s = 'xxx\u2620\u2620\u2620xxx' |
| 952 | s_escaped = re.escape(s) |
| 953 | self.assertEqual(s_escaped, 'xxx\\\u2620\\\u2620\\\u2620xxx') |
| 954 | self.assertMatch(s_escaped, s) |
| 955 | self.assertMatch('.%s+.' % re.escape('\u2620'), s, |
| 956 | 'x\u2620\u2620\u2620x', (2, 7), re.search) |
| 957 | |
| 958 | def test_re_escape_non_ascii_bytes(self): |
| 959 | b = 'y\u2620y\u2620y'.encode('utf-8') |
| 960 | b_escaped = re.escape(b) |
| 961 | self.assertEqual(b_escaped, b'y\\\xe2\\\x98\\\xa0y\\\xe2\\\x98\\\xa0y') |
| 962 | self.assertMatch(b_escaped, b) |
| 963 | res = re.findall(re.escape('\u2620'.encode('utf-8')), b) |
| 964 | self.assertEqual(len(res), 2) |
Guido van Rossum | 698280d | 2008-09-10 17:44:35 +0000 | [diff] [blame] | 965 | |
Serhiy Storchaka | b85a976 | 2014-09-15 11:33:19 +0300 | [diff] [blame] | 966 | def test_pickling(self): |
| 967 | import pickle |
| 968 | oldpat = re.compile('a(?:b|(c|e){1,2}?|d)+?(.)', re.UNICODE) |
| 969 | for proto in range(pickle.HIGHEST_PROTOCOL + 1): |
| 970 | pickled = pickle.dumps(oldpat, proto) |
| 971 | newpat = pickle.loads(pickled) |
| 972 | self.assertEqual(newpat, oldpat) |
| 973 | # current pickle expects the _compile() reconstructor in re module |
| 974 | from re import _compile |
Guido van Rossum | 23b2257 | 1997-07-17 22:36:14 +0000 | [diff] [blame] | 975 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 976 | def test_constants(self): |
| 977 | self.assertEqual(re.I, re.IGNORECASE) |
| 978 | self.assertEqual(re.L, re.LOCALE) |
| 979 | self.assertEqual(re.M, re.MULTILINE) |
| 980 | self.assertEqual(re.S, re.DOTALL) |
| 981 | self.assertEqual(re.X, re.VERBOSE) |
Fredrik Lundh | 1151a8c | 2000-08-08 16:47:42 +0000 | [diff] [blame] | 982 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 983 | def test_flags(self): |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 984 | for flag in [re.I, re.M, re.X, re.S, re.A, re.U]: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 985 | self.assertTrue(re.compile('^pattern$', flag)) |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 986 | for flag in [re.I, re.M, re.X, re.S, re.A, re.L]: |
| 987 | self.assertTrue(re.compile(b'^pattern$', flag)) |
Guido van Rossum | f473cb0 | 1998-01-14 16:42:17 +0000 | [diff] [blame] | 988 | |
Skip Montanaro | 7d9963f | 2003-04-25 14:12:40 +0000 | [diff] [blame] | 989 | def test_sre_character_literals(self): |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 990 | for i in [0, 8, 16, 32, 64, 127, 128, 255, 256, 0xFFFF, 0x10000, 0x10FFFF]: |
| 991 | if i < 256: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 992 | self.assertTrue(re.match(r"\%03o" % i, chr(i))) |
| 993 | self.assertTrue(re.match(r"\%03o0" % i, chr(i)+"0")) |
| 994 | self.assertTrue(re.match(r"\%03o8" % i, chr(i)+"8")) |
| 995 | self.assertTrue(re.match(r"\x%02x" % i, chr(i))) |
| 996 | self.assertTrue(re.match(r"\x%02x0" % i, chr(i)+"0")) |
| 997 | self.assertTrue(re.match(r"\x%02xz" % i, chr(i)+"z")) |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 998 | if i < 0x10000: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 999 | self.assertTrue(re.match(r"\u%04x" % i, chr(i))) |
| 1000 | self.assertTrue(re.match(r"\u%04x0" % i, chr(i)+"0")) |
| 1001 | self.assertTrue(re.match(r"\u%04xz" % i, chr(i)+"z")) |
| 1002 | self.assertTrue(re.match(r"\U%08x" % i, chr(i))) |
| 1003 | self.assertTrue(re.match(r"\U%08x0" % i, chr(i)+"0")) |
| 1004 | self.assertTrue(re.match(r"\U%08xz" % i, chr(i)+"z")) |
| 1005 | self.assertTrue(re.match(r"\0", "\000")) |
| 1006 | self.assertTrue(re.match(r"\08", "\0008")) |
| 1007 | self.assertTrue(re.match(r"\01", "\001")) |
| 1008 | self.assertTrue(re.match(r"\018", "\0018")) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1009 | self.checkPatternError(r"\567", |
| 1010 | r'octal escape value \567 outside of ' |
| 1011 | r'range 0-0o377', 0) |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 1012 | self.checkPatternError(r"\911", 'invalid group reference 91', 1) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1013 | self.checkPatternError(r"\x1", r'incomplete escape \x1', 0) |
| 1014 | self.checkPatternError(r"\x1z", r'incomplete escape \x1', 0) |
| 1015 | self.checkPatternError(r"\u123", r'incomplete escape \u123', 0) |
| 1016 | self.checkPatternError(r"\u123z", r'incomplete escape \u123', 0) |
| 1017 | self.checkPatternError(r"\U0001234", r'incomplete escape \U0001234', 0) |
| 1018 | self.checkPatternError(r"\U0001234z", r'incomplete escape \U0001234', 0) |
| 1019 | self.checkPatternError(r"\U00110000", r'bad escape \U00110000', 0) |
Skip Montanaro | 7d9963f | 2003-04-25 14:12:40 +0000 | [diff] [blame] | 1020 | |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 1021 | def test_sre_character_class_literals(self): |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 1022 | for i in [0, 8, 16, 32, 64, 127, 128, 255, 256, 0xFFFF, 0x10000, 0x10FFFF]: |
| 1023 | if i < 256: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1024 | self.assertTrue(re.match(r"[\%o]" % i, chr(i))) |
| 1025 | self.assertTrue(re.match(r"[\%o8]" % i, chr(i))) |
| 1026 | self.assertTrue(re.match(r"[\%03o]" % i, chr(i))) |
| 1027 | self.assertTrue(re.match(r"[\%03o0]" % i, chr(i))) |
| 1028 | self.assertTrue(re.match(r"[\%03o8]" % i, chr(i))) |
| 1029 | self.assertTrue(re.match(r"[\x%02x]" % i, chr(i))) |
| 1030 | self.assertTrue(re.match(r"[\x%02x0]" % i, chr(i))) |
| 1031 | self.assertTrue(re.match(r"[\x%02xz]" % i, chr(i))) |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 1032 | if i < 0x10000: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1033 | self.assertTrue(re.match(r"[\u%04x]" % i, chr(i))) |
| 1034 | self.assertTrue(re.match(r"[\u%04x0]" % i, chr(i))) |
| 1035 | self.assertTrue(re.match(r"[\u%04xz]" % i, chr(i))) |
| 1036 | self.assertTrue(re.match(r"[\U%08x]" % i, chr(i))) |
| 1037 | self.assertTrue(re.match(r"[\U%08x0]" % i, chr(i)+"0")) |
| 1038 | self.assertTrue(re.match(r"[\U%08xz]" % i, chr(i)+"z")) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1039 | self.checkPatternError(r"[\567]", |
| 1040 | r'octal escape value \567 outside of ' |
| 1041 | r'range 0-0o377', 1) |
| 1042 | self.checkPatternError(r"[\911]", r'bad escape \9', 1) |
| 1043 | self.checkPatternError(r"[\x1z]", r'incomplete escape \x1', 1) |
| 1044 | self.checkPatternError(r"[\u123z]", r'incomplete escape \u123', 1) |
| 1045 | self.checkPatternError(r"[\U0001234z]", r'incomplete escape \U0001234', 1) |
| 1046 | self.checkPatternError(r"[\U00110000]", r'bad escape \U00110000', 1) |
Serhiy Storchaka | c563caf | 2014-09-23 23:22:41 +0300 | [diff] [blame] | 1047 | self.assertTrue(re.match(r"[\U0001d49c-\U0001d4b5]", "\U0001d49e")) |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 1048 | |
| 1049 | def test_sre_byte_literals(self): |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 1050 | for i in [0, 8, 16, 32, 64, 127, 128, 255]: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1051 | self.assertTrue(re.match((r"\%03o" % i).encode(), bytes([i]))) |
| 1052 | self.assertTrue(re.match((r"\%03o0" % i).encode(), bytes([i])+b"0")) |
| 1053 | self.assertTrue(re.match((r"\%03o8" % i).encode(), bytes([i])+b"8")) |
| 1054 | self.assertTrue(re.match((r"\x%02x" % i).encode(), bytes([i]))) |
| 1055 | self.assertTrue(re.match((r"\x%02x0" % i).encode(), bytes([i])+b"0")) |
| 1056 | self.assertTrue(re.match((r"\x%02xz" % i).encode(), bytes([i])+b"z")) |
Serhiy Storchaka | 9bd85b8 | 2016-06-11 19:15:00 +0300 | [diff] [blame] | 1057 | self.assertRaises(re.error, re.compile, br"\u1234") |
| 1058 | self.assertRaises(re.error, re.compile, br"\U00012345") |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1059 | self.assertTrue(re.match(br"\0", b"\000")) |
| 1060 | self.assertTrue(re.match(br"\08", b"\0008")) |
| 1061 | self.assertTrue(re.match(br"\01", b"\001")) |
| 1062 | self.assertTrue(re.match(br"\018", b"\0018")) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1063 | self.checkPatternError(br"\567", |
| 1064 | r'octal escape value \567 outside of ' |
| 1065 | r'range 0-0o377', 0) |
Serhiy Storchaka | 662cef6 | 2016-10-23 12:11:19 +0300 | [diff] [blame] | 1066 | self.checkPatternError(br"\911", 'invalid group reference 91', 1) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1067 | self.checkPatternError(br"\x1", r'incomplete escape \x1', 0) |
| 1068 | self.checkPatternError(br"\x1z", r'incomplete escape \x1', 0) |
Antoine Pitrou | 463badf | 2012-06-23 13:29:19 +0200 | [diff] [blame] | 1069 | |
| 1070 | def test_sre_byte_class_literals(self): |
| 1071 | for i in [0, 8, 16, 32, 64, 127, 128, 255]: |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1072 | self.assertTrue(re.match((r"[\%o]" % i).encode(), bytes([i]))) |
| 1073 | self.assertTrue(re.match((r"[\%o8]" % i).encode(), bytes([i]))) |
| 1074 | self.assertTrue(re.match((r"[\%03o]" % i).encode(), bytes([i]))) |
| 1075 | self.assertTrue(re.match((r"[\%03o0]" % i).encode(), bytes([i]))) |
| 1076 | self.assertTrue(re.match((r"[\%03o8]" % i).encode(), bytes([i]))) |
| 1077 | self.assertTrue(re.match((r"[\x%02x]" % i).encode(), bytes([i]))) |
| 1078 | self.assertTrue(re.match((r"[\x%02x0]" % i).encode(), bytes([i]))) |
| 1079 | self.assertTrue(re.match((r"[\x%02xz]" % i).encode(), bytes([i]))) |
Serhiy Storchaka | 9bd85b8 | 2016-06-11 19:15:00 +0300 | [diff] [blame] | 1080 | self.assertRaises(re.error, re.compile, br"[\u1234]") |
| 1081 | self.assertRaises(re.error, re.compile, br"[\U00012345]") |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1082 | self.checkPatternError(br"[\567]", |
| 1083 | r'octal escape value \567 outside of ' |
| 1084 | r'range 0-0o377', 1) |
| 1085 | self.checkPatternError(br"[\911]", r'bad escape \9', 1) |
| 1086 | self.checkPatternError(br"[\x1z]", r'incomplete escape \x1', 1) |
| 1087 | |
| 1088 | def test_character_set_errors(self): |
| 1089 | self.checkPatternError(r'[', 'unterminated character set', 0) |
| 1090 | self.checkPatternError(r'[^', 'unterminated character set', 0) |
| 1091 | self.checkPatternError(r'[a', 'unterminated character set', 0) |
| 1092 | # bug 545855 -- This pattern failed to cause a compile error as it |
| 1093 | # should, instead provoking a TypeError. |
| 1094 | self.checkPatternError(r"[a-", 'unterminated character set', 0) |
| 1095 | self.checkPatternError(r"[\w-b]", r'bad character range \w-b', 1) |
| 1096 | self.checkPatternError(r"[a-\w]", r'bad character range a-\w', 1) |
| 1097 | self.checkPatternError(r"[b-a]", 'bad character range b-a', 1) |
Gustavo Niemeyer | a01a2ee | 2004-09-03 17:06:10 +0000 | [diff] [blame] | 1098 | |
Skip Montanaro | 7d9963f | 2003-04-25 14:12:40 +0000 | [diff] [blame] | 1099 | def test_bug_113254(self): |
| 1100 | self.assertEqual(re.match(r'(a)|(b)', 'b').start(1), -1) |
| 1101 | self.assertEqual(re.match(r'(a)|(b)', 'b').end(1), -1) |
| 1102 | self.assertEqual(re.match(r'(a)|(b)', 'b').span(1), (-1, -1)) |
| 1103 | |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1104 | def test_bug_527371(self): |
| 1105 | # bug described in patches 527371/672491 |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1106 | self.assertIsNone(re.match(r'(a)?a','a').lastindex) |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1107 | self.assertEqual(re.match(r'(a)(b)?b','ab').lastindex, 1) |
| 1108 | self.assertEqual(re.match(r'(?P<a>a)(?P<b>b)?b','ab').lastgroup, 'a') |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1109 | self.assertEqual(re.match(r"(?P<a>a(b))", "ab").lastgroup, 'a') |
| 1110 | self.assertEqual(re.match(r"((a))", "a").lastindex, 1) |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1111 | |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1112 | def test_bug_418626(self): |
| 1113 | # bugs 418626 at al. -- Testing Greg Chapman's addition of op code |
| 1114 | # SRE_OP_MIN_REPEAT_ONE for eliminating recursion on simple uses of |
| 1115 | # pattern '*?' on a long string. |
| 1116 | self.assertEqual(re.match('.*?c', 10000*'ab'+'cd').end(0), 20001) |
| 1117 | self.assertEqual(re.match('.*?cd', 5000*'ab'+'c'+5000*'ab'+'cde').end(0), |
| 1118 | 20003) |
| 1119 | self.assertEqual(re.match('.*?cd', 20000*'abc'+'de').end(0), 60001) |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 1120 | # non-simple '*?' still used to hit the recursion limit, before the |
Tim Peters | 58eb11c | 2004-01-18 20:29:55 +0000 | [diff] [blame] | 1121 | # non-recursive scheme was implemented. |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 1122 | self.assertEqual(re.search('(a|b)*?c', 10000*'ab'+'cd').end(0), 20001) |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1123 | |
| 1124 | def test_bug_612074(self): |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 1125 | pat="["+re.escape("\u2039")+"]" |
Skip Montanaro | 2726fcd | 2003-04-25 14:31:54 +0000 | [diff] [blame] | 1126 | self.assertEqual(re.compile(pat) and 1, 1) |
| 1127 | |
Skip Montanaro | 1e703c6 | 2003-04-25 15:40:28 +0000 | [diff] [blame] | 1128 | def test_stack_overflow(self): |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 1129 | # nasty cases that used to overflow the straightforward recursive |
Skip Montanaro | 1e703c6 | 2003-04-25 15:40:28 +0000 | [diff] [blame] | 1130 | # implementation of repeated groups. |
Gustavo Niemeyer | ad3fc44 | 2003-10-17 22:13:16 +0000 | [diff] [blame] | 1131 | self.assertEqual(re.match('(x)*', 50000*'x').group(1), 'x') |
| 1132 | self.assertEqual(re.match('(x)*y', 50000*'x'+'y').group(1), 'x') |
| 1133 | self.assertEqual(re.match('(x)*?y', 50000*'x'+'y').group(1), 'x') |
Skip Montanaro | 1e703c6 | 2003-04-25 15:40:28 +0000 | [diff] [blame] | 1134 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1135 | def test_nothing_to_repeat(self): |
| 1136 | for reps in '*', '+', '?', '{1,2}': |
| 1137 | for mod in '', '?': |
| 1138 | self.checkPatternError('%s%s' % (reps, mod), |
| 1139 | 'nothing to repeat', 0) |
| 1140 | self.checkPatternError('(?:%s%s)' % (reps, mod), |
| 1141 | 'nothing to repeat', 3) |
| 1142 | |
| 1143 | def test_multiple_repeat(self): |
| 1144 | for outer_reps in '*', '+', '{1,2}': |
| 1145 | for outer_mod in '', '?': |
| 1146 | outer_op = outer_reps + outer_mod |
| 1147 | for inner_reps in '*', '+', '?', '{1,2}': |
| 1148 | for inner_mod in '', '?': |
| 1149 | inner_op = inner_reps + inner_mod |
| 1150 | self.checkPatternError(r'x%s%s' % (inner_op, outer_op), |
| 1151 | 'multiple repeat', 1 + len(inner_op)) |
| 1152 | |
Serhiy Storchaka | fa46816 | 2013-02-16 21:23:53 +0200 | [diff] [blame] | 1153 | def test_unlimited_zero_width_repeat(self): |
| 1154 | # Issue #9669 |
| 1155 | self.assertIsNone(re.match(r'(?:a?)*y', 'z')) |
| 1156 | self.assertIsNone(re.match(r'(?:a?)+y', 'z')) |
| 1157 | self.assertIsNone(re.match(r'(?:a?){2,}y', 'z')) |
| 1158 | self.assertIsNone(re.match(r'(?:a?)*?y', 'z')) |
| 1159 | self.assertIsNone(re.match(r'(?:a?)+?y', 'z')) |
| 1160 | self.assertIsNone(re.match(r'(?:a?){2,}?y', 'z')) |
| 1161 | |
Skip Montanaro | 1e703c6 | 2003-04-25 15:40:28 +0000 | [diff] [blame] | 1162 | def test_scanner(self): |
| 1163 | def s_ident(scanner, token): return token |
| 1164 | def s_operator(scanner, token): return "op%s" % token |
| 1165 | def s_float(scanner, token): return float(token) |
| 1166 | def s_int(scanner, token): return int(token) |
| 1167 | |
| 1168 | scanner = Scanner([ |
| 1169 | (r"[a-zA-Z_]\w*", s_ident), |
| 1170 | (r"\d+\.\d*", s_float), |
| 1171 | (r"\d+", s_int), |
| 1172 | (r"=|\+|-|\*|/", s_operator), |
| 1173 | (r"\s+", None), |
| 1174 | ]) |
| 1175 | |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1176 | self.assertTrue(scanner.scanner.scanner("").pattern) |
Gustavo Niemeyer | 25fe0bf | 2003-06-20 00:25:14 +0000 | [diff] [blame] | 1177 | |
Skip Montanaro | 1e703c6 | 2003-04-25 15:40:28 +0000 | [diff] [blame] | 1178 | self.assertEqual(scanner.scan("sum = 3*foo + 312.50 + bar"), |
| 1179 | (['sum', 'op=', 3, 'op*', 'foo', 'op+', 312.5, |
| 1180 | 'op+', 'bar'], '')) |
| 1181 | |
Skip Montanaro | 5ba0054 | 2003-04-25 16:00:14 +0000 | [diff] [blame] | 1182 | def test_bug_448951(self): |
| 1183 | # bug 448951 (similar to 429357, but with single char match) |
| 1184 | # (Also test greedy matches.) |
| 1185 | for op in '','?','*': |
| 1186 | self.assertEqual(re.match(r'((.%s):)?z'%op, 'z').groups(), |
| 1187 | (None, None)) |
| 1188 | self.assertEqual(re.match(r'((.%s):)?z'%op, 'a:z').groups(), |
| 1189 | ('a:', 'a')) |
| 1190 | |
Gustavo Niemeyer | c34f255 | 2003-04-27 12:34:14 +0000 | [diff] [blame] | 1191 | def test_bug_725106(self): |
| 1192 | # capturing groups in alternatives in repeats |
| 1193 | self.assertEqual(re.match('^((a)|b)*', 'abc').groups(), |
| 1194 | ('b', 'a')) |
| 1195 | self.assertEqual(re.match('^(([ab])|c)*', 'abc').groups(), |
| 1196 | ('c', 'b')) |
| 1197 | self.assertEqual(re.match('^((d)|[ab])*', 'abc').groups(), |
| 1198 | ('b', None)) |
| 1199 | self.assertEqual(re.match('^((a)c|[ab])*', 'abc').groups(), |
| 1200 | ('b', None)) |
| 1201 | self.assertEqual(re.match('^((a)|b)*?c', 'abc').groups(), |
| 1202 | ('b', 'a')) |
| 1203 | self.assertEqual(re.match('^(([ab])|c)*?d', 'abcd').groups(), |
| 1204 | ('c', 'b')) |
| 1205 | self.assertEqual(re.match('^((d)|[ab])*?c', 'abc').groups(), |
| 1206 | ('b', None)) |
| 1207 | self.assertEqual(re.match('^((a)c|[ab])*?c', 'abc').groups(), |
| 1208 | ('b', None)) |
| 1209 | |
Gustavo Niemeyer | 3646ab9 | 2003-04-27 13:25:21 +0000 | [diff] [blame] | 1210 | def test_bug_725149(self): |
| 1211 | # mark_stack_base restoring before restoring marks |
| 1212 | self.assertEqual(re.match('(a)(?:(?=(b)*)c)*', 'abb').groups(), |
| 1213 | ('a', None)) |
| 1214 | self.assertEqual(re.match('(a)((?!(b)*))*', 'abb').groups(), |
| 1215 | ('a', None, None)) |
| 1216 | |
Just van Rossum | 12723ba | 2003-07-02 20:03:04 +0000 | [diff] [blame] | 1217 | def test_bug_764548(self): |
| 1218 | # bug 764548, re.compile() barfs on str/unicode subclasses |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 1219 | class my_unicode(str): pass |
Just van Rossum | 12723ba | 2003-07-02 20:03:04 +0000 | [diff] [blame] | 1220 | pat = re.compile(my_unicode("abc")) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1221 | self.assertIsNone(pat.match("xyz")) |
Just van Rossum | 12723ba | 2003-07-02 20:03:04 +0000 | [diff] [blame] | 1222 | |
Skip Montanaro | 5ba0054 | 2003-04-25 16:00:14 +0000 | [diff] [blame] | 1223 | def test_finditer(self): |
| 1224 | iter = re.finditer(r":+", "a:b::c:::d") |
| 1225 | self.assertEqual([item.group(0) for item in iter], |
| 1226 | [":", "::", ":::"]) |
| 1227 | |
Sean Reifschneider | 7b3c975 | 2012-03-12 18:22:38 -0600 | [diff] [blame] | 1228 | pat = re.compile(r":+") |
| 1229 | iter = pat.finditer("a:b::c:::d", 1, 10) |
| 1230 | self.assertEqual([item.group(0) for item in iter], |
| 1231 | [":", "::", ":::"]) |
| 1232 | |
| 1233 | pat = re.compile(r":+") |
| 1234 | iter = pat.finditer("a:b::c:::d", pos=1, endpos=10) |
| 1235 | self.assertEqual([item.group(0) for item in iter], |
| 1236 | [":", "::", ":::"]) |
| 1237 | |
| 1238 | pat = re.compile(r":+") |
| 1239 | iter = pat.finditer("a:b::c:::d", endpos=10, pos=1) |
| 1240 | self.assertEqual([item.group(0) for item in iter], |
| 1241 | [":", "::", ":::"]) |
| 1242 | |
| 1243 | pat = re.compile(r":+") |
| 1244 | iter = pat.finditer("a:b::c:::d", pos=3, endpos=8) |
| 1245 | self.assertEqual([item.group(0) for item in iter], |
| 1246 | ["::", "::"]) |
| 1247 | |
Thomas Wouters | 40a088d | 2008-03-18 20:19:54 +0000 | [diff] [blame] | 1248 | def test_bug_926075(self): |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1249 | self.assertIsNot(re.compile('bug_926075'), |
| 1250 | re.compile(b'bug_926075')) |
Hye-Shik Chang | 9f62ecc | 2004-04-20 21:30:07 +0000 | [diff] [blame] | 1251 | |
Martin v. Löwis | 7d9c6c7 | 2004-05-07 07:18:13 +0000 | [diff] [blame] | 1252 | def test_bug_931848(self): |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 1253 | pattern = "[\u002E\u3002\uFF0E\uFF61]" |
Martin v. Löwis | 7d9c6c7 | 2004-05-07 07:18:13 +0000 | [diff] [blame] | 1254 | self.assertEqual(re.compile(pattern).split("a.b.c"), |
| 1255 | ['a','b','c']) |
| 1256 | |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 1257 | def test_bug_581080(self): |
| 1258 | iter = re.finditer(r"\s", "a b") |
Georg Brandl | a18af4e | 2007-04-21 15:47:16 +0000 | [diff] [blame] | 1259 | self.assertEqual(next(iter).span(), (1,2)) |
| 1260 | self.assertRaises(StopIteration, next, iter) |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 1261 | |
| 1262 | scanner = re.compile(r"\s").scanner("a b") |
| 1263 | self.assertEqual(scanner.search().span(), (1, 2)) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1264 | self.assertIsNone(scanner.search()) |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 1265 | |
| 1266 | def test_bug_817234(self): |
| 1267 | iter = re.finditer(r".*", "asdf") |
Georg Brandl | a18af4e | 2007-04-21 15:47:16 +0000 | [diff] [blame] | 1268 | self.assertEqual(next(iter).span(), (0, 4)) |
| 1269 | self.assertEqual(next(iter).span(), (4, 4)) |
| 1270 | self.assertRaises(StopIteration, next, iter) |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 1271 | |
Mark Dickinson | 1f26828 | 2009-07-28 17:22:36 +0000 | [diff] [blame] | 1272 | def test_bug_6561(self): |
| 1273 | # '\d' should match characters in Unicode category 'Nd' |
| 1274 | # (Number, Decimal Digit), but not those in 'Nl' (Number, |
| 1275 | # Letter) or 'No' (Number, Other). |
| 1276 | decimal_digits = [ |
| 1277 | '\u0037', # '\N{DIGIT SEVEN}', category 'Nd' |
| 1278 | '\u0e58', # '\N{THAI DIGIT SIX}', category 'Nd' |
| 1279 | '\uff10', # '\N{FULLWIDTH DIGIT ZERO}', category 'Nd' |
| 1280 | ] |
| 1281 | for x in decimal_digits: |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1282 | self.assertEqual(re.match(r'^\d$', x).group(0), x) |
Mark Dickinson | 1f26828 | 2009-07-28 17:22:36 +0000 | [diff] [blame] | 1283 | |
| 1284 | not_decimal_digits = [ |
| 1285 | '\u2165', # '\N{ROMAN NUMERAL SIX}', category 'Nl' |
| 1286 | '\u3039', # '\N{HANGZHOU NUMERAL TWENTY}', category 'Nl' |
| 1287 | '\u2082', # '\N{SUBSCRIPT TWO}', category 'No' |
| 1288 | '\u32b4', # '\N{CIRCLED NUMBER THIRTY NINE}', category 'No' |
| 1289 | ] |
| 1290 | for x in not_decimal_digits: |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1291 | self.assertIsNone(re.match(r'^\d$', x)) |
Mark Dickinson | 1f26828 | 2009-07-28 17:22:36 +0000 | [diff] [blame] | 1292 | |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1293 | def test_empty_array(self): |
| 1294 | # SF buf 1647541 |
| 1295 | import array |
Guido van Rossum | 166746c | 2007-07-03 15:39:16 +0000 | [diff] [blame] | 1296 | for typecode in 'bBuhHiIlLfd': |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1297 | a = array.array(typecode) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1298 | self.assertIsNone(re.compile(b"bla").match(a)) |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1299 | self.assertEqual(re.compile(b"").match(a).groups(), ()) |
Gustavo Niemeyer | 0506c64 | 2004-09-03 18:11:59 +0000 | [diff] [blame] | 1300 | |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1301 | def test_inline_flags(self): |
| 1302 | # Bug #1700 |
Serhiy Storchaka | ab14088 | 2014-11-11 21:13:28 +0200 | [diff] [blame] | 1303 | upper_char = '\u1ea0' # Latin Capital Letter A with Dot Below |
| 1304 | lower_char = '\u1ea1' # Latin Small Letter A with Dot Below |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1305 | |
| 1306 | p = re.compile(upper_char, re.I | re.U) |
| 1307 | q = p.match(lower_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1308 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1309 | |
| 1310 | p = re.compile(lower_char, re.I | re.U) |
| 1311 | q = p.match(upper_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1312 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1313 | |
| 1314 | p = re.compile('(?i)' + upper_char, re.U) |
| 1315 | q = p.match(lower_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1316 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1317 | |
| 1318 | p = re.compile('(?i)' + lower_char, re.U) |
| 1319 | q = p.match(upper_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1320 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1321 | |
| 1322 | p = re.compile('(?iu)' + upper_char) |
| 1323 | q = p.match(lower_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1324 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1325 | |
| 1326 | p = re.compile('(?iu)' + lower_char) |
| 1327 | q = p.match(upper_char) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1328 | self.assertTrue(q) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1329 | |
Serhiy Storchaka | d65cd09 | 2016-09-11 01:39:01 +0300 | [diff] [blame] | 1330 | self.assertTrue(re.match('(?ixu) ' + upper_char, lower_char)) |
| 1331 | self.assertTrue(re.match('(?ixu) ' + lower_char, upper_char)) |
| 1332 | |
Serhiy Storchaka | abf275a | 2016-09-17 01:29:58 +0300 | [diff] [blame] | 1333 | p = upper_char + '(?i)' |
| 1334 | with self.assertWarns(DeprecationWarning) as warns: |
| 1335 | self.assertTrue(re.match(p, lower_char)) |
| 1336 | self.assertEqual( |
| 1337 | str(warns.warnings[0].message), |
| 1338 | 'Flags not at the start of the expression %s' % p |
| 1339 | ) |
| 1340 | |
| 1341 | p = upper_char + '(?i)%s' % ('.?' * 100) |
| 1342 | with self.assertWarns(DeprecationWarning) as warns: |
| 1343 | self.assertTrue(re.match(p, lower_char)) |
| 1344 | self.assertEqual( |
| 1345 | str(warns.warnings[0].message), |
| 1346 | 'Flags not at the start of the expression %s (truncated)' % p[:20] |
| 1347 | ) |
Serhiy Storchaka | bd48d27 | 2016-09-11 12:50:02 +0300 | [diff] [blame] | 1348 | |
Christian Heimes | 25bb783 | 2008-01-11 16:17:00 +0000 | [diff] [blame] | 1349 | def test_dollar_matches_twice(self): |
| 1350 | "$ matches the end of string, and just before the terminating \n" |
| 1351 | pattern = re.compile('$') |
| 1352 | self.assertEqual(pattern.sub('#', 'a\nb\n'), 'a\nb#\n#') |
| 1353 | self.assertEqual(pattern.sub('#', 'a\nb\nc'), 'a\nb\nc#') |
| 1354 | self.assertEqual(pattern.sub('#', '\n'), '#\n#') |
| 1355 | |
| 1356 | pattern = re.compile('$', re.MULTILINE) |
| 1357 | self.assertEqual(pattern.sub('#', 'a\nb\n' ), 'a#\nb#\n#' ) |
| 1358 | self.assertEqual(pattern.sub('#', 'a\nb\nc'), 'a#\nb#\nc#') |
| 1359 | self.assertEqual(pattern.sub('#', '\n'), '#\n#') |
| 1360 | |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1361 | def test_bytes_str_mixing(self): |
| 1362 | # Mixing str and bytes is disallowed |
| 1363 | pat = re.compile('.') |
| 1364 | bpat = re.compile(b'.') |
| 1365 | self.assertRaises(TypeError, pat.match, b'b') |
| 1366 | self.assertRaises(TypeError, bpat.match, 'b') |
| 1367 | self.assertRaises(TypeError, pat.sub, b'b', 'c') |
| 1368 | self.assertRaises(TypeError, pat.sub, 'b', b'c') |
| 1369 | self.assertRaises(TypeError, pat.sub, b'b', b'c') |
| 1370 | self.assertRaises(TypeError, bpat.sub, b'b', 'c') |
| 1371 | self.assertRaises(TypeError, bpat.sub, 'b', b'c') |
| 1372 | self.assertRaises(TypeError, bpat.sub, 'b', 'c') |
| 1373 | |
| 1374 | def test_ascii_and_unicode_flag(self): |
| 1375 | # String patterns |
| 1376 | for flags in (0, re.UNICODE): |
| 1377 | pat = re.compile('\xc0', flags | re.IGNORECASE) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1378 | self.assertTrue(pat.match('\xe0')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1379 | pat = re.compile(r'\w', flags) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1380 | self.assertTrue(pat.match('\xe0')) |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1381 | pat = re.compile('\xc0', re.ASCII | re.IGNORECASE) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1382 | self.assertIsNone(pat.match('\xe0')) |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1383 | pat = re.compile('(?a)\xc0', re.IGNORECASE) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1384 | self.assertIsNone(pat.match('\xe0')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1385 | pat = re.compile(r'\w', re.ASCII) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1386 | self.assertIsNone(pat.match('\xe0')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1387 | pat = re.compile(r'(?a)\w') |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1388 | self.assertIsNone(pat.match('\xe0')) |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1389 | # Bytes patterns |
| 1390 | for flags in (0, re.ASCII): |
Serhiy Storchaka | a25875c | 2014-09-14 15:56:27 +0300 | [diff] [blame] | 1391 | pat = re.compile(b'\xc0', flags | re.IGNORECASE) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1392 | self.assertIsNone(pat.match(b'\xe0')) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1393 | pat = re.compile(br'\w', flags) |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1394 | self.assertIsNone(pat.match(b'\xe0')) |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1395 | # Incompatibilities |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1396 | self.assertRaises(ValueError, re.compile, br'\w', re.UNICODE) |
| 1397 | self.assertRaises(ValueError, re.compile, br'(?u)\w') |
| 1398 | self.assertRaises(ValueError, re.compile, r'\w', re.UNICODE | re.ASCII) |
| 1399 | self.assertRaises(ValueError, re.compile, r'(?u)\w', re.ASCII) |
| 1400 | self.assertRaises(ValueError, re.compile, r'(?a)\w', re.UNICODE) |
| 1401 | self.assertRaises(ValueError, re.compile, r'(?au)\w') |
Antoine Pitrou | fd03645 | 2008-08-19 17:56:33 +0000 | [diff] [blame] | 1402 | |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1403 | def test_locale_flag(self): |
| 1404 | import locale |
Nick Coghlan | 0683d68 | 2017-02-19 10:03:35 +0530 | [diff] [blame] | 1405 | enc = locale.getpreferredencoding(False) |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1406 | # Search non-ASCII letter |
| 1407 | for i in range(128, 256): |
| 1408 | try: |
| 1409 | c = bytes([i]).decode(enc) |
| 1410 | sletter = c.lower() |
| 1411 | if sletter == c: continue |
| 1412 | bletter = sletter.encode(enc) |
| 1413 | if len(bletter) != 1: continue |
| 1414 | if bletter.decode(enc) != sletter: continue |
| 1415 | bpat = re.escape(bytes([i])) |
| 1416 | break |
| 1417 | except (UnicodeError, TypeError): |
| 1418 | pass |
| 1419 | else: |
| 1420 | bletter = None |
| 1421 | bpat = b'A' |
| 1422 | # Bytes patterns |
| 1423 | pat = re.compile(bpat, re.LOCALE | re.IGNORECASE) |
| 1424 | if bletter: |
| 1425 | self.assertTrue(pat.match(bletter)) |
| 1426 | pat = re.compile(b'(?L)' + bpat, re.IGNORECASE) |
| 1427 | if bletter: |
| 1428 | self.assertTrue(pat.match(bletter)) |
| 1429 | pat = re.compile(bpat, re.IGNORECASE) |
| 1430 | if bletter: |
| 1431 | self.assertIsNone(pat.match(bletter)) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1432 | pat = re.compile(br'\w', re.LOCALE) |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1433 | if bletter: |
| 1434 | self.assertTrue(pat.match(bletter)) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1435 | pat = re.compile(br'(?L)\w') |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1436 | if bletter: |
| 1437 | self.assertTrue(pat.match(bletter)) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1438 | pat = re.compile(br'\w') |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1439 | if bletter: |
| 1440 | self.assertIsNone(pat.match(bletter)) |
| 1441 | # Incompatibilities |
Serhiy Storchaka | 9bd85b8 | 2016-06-11 19:15:00 +0300 | [diff] [blame] | 1442 | self.assertRaises(ValueError, re.compile, '', re.LOCALE) |
| 1443 | self.assertRaises(ValueError, re.compile, '(?L)') |
| 1444 | self.assertRaises(ValueError, re.compile, b'', re.LOCALE | re.ASCII) |
| 1445 | self.assertRaises(ValueError, re.compile, b'(?L)', re.ASCII) |
| 1446 | self.assertRaises(ValueError, re.compile, b'(?a)', re.LOCALE) |
| 1447 | self.assertRaises(ValueError, re.compile, b'(?aL)') |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1448 | |
Serhiy Storchaka | be9a4e5 | 2016-09-10 00:57:55 +0300 | [diff] [blame] | 1449 | def test_scoped_flags(self): |
| 1450 | self.assertTrue(re.match(r'(?i:a)b', 'Ab')) |
| 1451 | self.assertIsNone(re.match(r'(?i:a)b', 'aB')) |
| 1452 | self.assertIsNone(re.match(r'(?-i:a)b', 'Ab', re.IGNORECASE)) |
| 1453 | self.assertTrue(re.match(r'(?-i:a)b', 'aB', re.IGNORECASE)) |
| 1454 | self.assertIsNone(re.match(r'(?i:(?-i:a)b)', 'Ab')) |
| 1455 | self.assertTrue(re.match(r'(?i:(?-i:a)b)', 'aB')) |
| 1456 | |
| 1457 | self.assertTrue(re.match(r'(?x: a) b', 'a b')) |
| 1458 | self.assertIsNone(re.match(r'(?x: a) b', ' a b')) |
| 1459 | self.assertTrue(re.match(r'(?-x: a) b', ' ab', re.VERBOSE)) |
| 1460 | self.assertIsNone(re.match(r'(?-x: a) b', 'ab', re.VERBOSE)) |
| 1461 | |
| 1462 | self.checkPatternError(r'(?a:\w)', |
| 1463 | 'bad inline flags: cannot turn on global flag', 3) |
| 1464 | self.checkPatternError(r'(?a)(?-a:\w)', |
| 1465 | 'bad inline flags: cannot turn off global flag', 8) |
| 1466 | self.checkPatternError(r'(?i-i:a)', |
| 1467 | 'bad inline flags: flag turned on and off', 5) |
| 1468 | |
| 1469 | self.checkPatternError(r'(?-', 'missing flag', 3) |
| 1470 | self.checkPatternError(r'(?-+', 'missing flag', 3) |
| 1471 | self.checkPatternError(r'(?-z', 'unknown flag', 3) |
| 1472 | self.checkPatternError(r'(?-i', 'missing :', 4) |
| 1473 | self.checkPatternError(r'(?-i)', 'missing :', 4) |
| 1474 | self.checkPatternError(r'(?-i+', 'missing :', 4) |
| 1475 | self.checkPatternError(r'(?-iz', 'unknown flag', 4) |
| 1476 | self.checkPatternError(r'(?i:', 'missing ), unterminated subpattern', 0) |
| 1477 | self.checkPatternError(r'(?i', 'missing -, : or )', 3) |
| 1478 | self.checkPatternError(r'(?i+', 'missing -, : or )', 3) |
| 1479 | self.checkPatternError(r'(?iz', 'unknown flag', 3) |
| 1480 | |
Ezio Melotti | b92ed7c | 2010-03-06 15:24:08 +0000 | [diff] [blame] | 1481 | def test_bug_6509(self): |
| 1482 | # Replacement strings of both types must parse properly. |
| 1483 | # all strings |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1484 | pat = re.compile(r'a(\w)') |
Ezio Melotti | b92ed7c | 2010-03-06 15:24:08 +0000 | [diff] [blame] | 1485 | self.assertEqual(pat.sub('b\\1', 'ac'), 'bc') |
| 1486 | pat = re.compile('a(.)') |
| 1487 | self.assertEqual(pat.sub('b\\1', 'a\u1234'), 'b\u1234') |
| 1488 | pat = re.compile('..') |
| 1489 | self.assertEqual(pat.sub(lambda m: 'str', 'a5'), 'str') |
| 1490 | |
| 1491 | # all bytes |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1492 | pat = re.compile(br'a(\w)') |
Ezio Melotti | b92ed7c | 2010-03-06 15:24:08 +0000 | [diff] [blame] | 1493 | self.assertEqual(pat.sub(b'b\\1', b'ac'), b'bc') |
| 1494 | pat = re.compile(b'a(.)') |
| 1495 | self.assertEqual(pat.sub(b'b\\1', b'a\xCD'), b'b\xCD') |
| 1496 | pat = re.compile(b'..') |
| 1497 | self.assertEqual(pat.sub(lambda m: b'bytes', b'a5'), b'bytes') |
| 1498 | |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 1499 | def test_dealloc(self): |
| 1500 | # issue 3299: check for segfault in debug build |
| 1501 | import _sre |
Ezio Melotti | 0f77f46 | 2010-01-23 10:49:39 +0000 | [diff] [blame] | 1502 | # the overflow limit is different on wide and narrow builds and it |
| 1503 | # depends on the definition of SRE_CODE (see sre.h). |
| 1504 | # 2**128 should be big enough to overflow on both. For smaller values |
| 1505 | # a RuntimeError is raised instead of OverflowError. |
| 1506 | long_overflow = 2**128 |
Antoine Pitrou | 82feb1f | 2010-01-14 17:34:48 +0000 | [diff] [blame] | 1507 | self.assertRaises(TypeError, re.finditer, "a", {}) |
Serhiy Storchaka | 9baa5b2 | 2014-09-29 22:49:23 +0300 | [diff] [blame] | 1508 | with self.assertRaises(OverflowError): |
| 1509 | _sre.compile("abc", 0, [long_overflow], 0, [], []) |
| 1510 | with self.assertRaises(TypeError): |
| 1511 | _sre.compile({}, 0, [], 0, [], []) |
Christian Heimes | 072c0f1 | 2008-01-03 23:01:04 +0000 | [diff] [blame] | 1512 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1513 | def test_search_dot_unicode(self): |
Serhiy Storchaka | d9cf65f | 2014-09-14 16:20:20 +0300 | [diff] [blame] | 1514 | self.assertTrue(re.search("123.*-", '123abc-')) |
| 1515 | self.assertTrue(re.search("123.*-", '123\xe9-')) |
| 1516 | self.assertTrue(re.search("123.*-", '123\u20ac-')) |
| 1517 | self.assertTrue(re.search("123.*-", '123\U0010ffff-')) |
| 1518 | self.assertTrue(re.search("123.*-", '123\xe9\u20ac\U0010ffff-')) |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 1519 | |
Ezio Melotti | df723e1 | 2012-03-13 01:29:48 +0200 | [diff] [blame] | 1520 | def test_compile(self): |
| 1521 | # Test return value when given string and pattern as parameter |
| 1522 | pattern = re.compile('random pattern') |
| 1523 | self.assertIsInstance(pattern, re._pattern_type) |
| 1524 | same_pattern = re.compile(pattern) |
| 1525 | self.assertIsInstance(same_pattern, re._pattern_type) |
| 1526 | self.assertIs(same_pattern, pattern) |
| 1527 | # Test behaviour when not given a string or pattern as parameter |
| 1528 | self.assertRaises(TypeError, re.compile, 0) |
| 1529 | |
Antoine Pitrou | b33941a | 2012-12-03 20:55:56 +0100 | [diff] [blame] | 1530 | @bigmemtest(size=_2G, memuse=1) |
Antoine Pitrou | 1f1888e | 2012-12-03 20:53:12 +0100 | [diff] [blame] | 1531 | def test_large_search(self, size): |
| 1532 | # Issue #10182: indices were 32-bit-truncated. |
| 1533 | s = 'a' * size |
| 1534 | m = re.search('$', s) |
| 1535 | self.assertIsNotNone(m) |
Antoine Pitrou | 86067c2 | 2012-12-03 21:08:43 +0100 | [diff] [blame] | 1536 | self.assertEqual(m.start(), size) |
| 1537 | self.assertEqual(m.end(), size) |
Antoine Pitrou | 1f1888e | 2012-12-03 20:53:12 +0100 | [diff] [blame] | 1538 | |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 1539 | # The huge memuse is because of re.sub() using a list and a join() |
| 1540 | # to create the replacement result. |
Antoine Pitrou | b33941a | 2012-12-03 20:55:56 +0100 | [diff] [blame] | 1541 | @bigmemtest(size=_2G, memuse=16 + 2) |
Antoine Pitrou | 1f1888e | 2012-12-03 20:53:12 +0100 | [diff] [blame] | 1542 | def test_large_subn(self, size): |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 1543 | # Issue #10182: indices were 32-bit-truncated. |
| 1544 | s = 'a' * size |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 1545 | r, n = re.subn('', '', s) |
| 1546 | self.assertEqual(r, s) |
| 1547 | self.assertEqual(n, size + 1) |
| 1548 | |
Serhiy Storchaka | c1b59d4 | 2012-12-29 23:38:48 +0200 | [diff] [blame] | 1549 | def test_bug_16688(self): |
| 1550 | # Issue 16688: Backreferences make case-insensitive regex fail on |
| 1551 | # non-ASCII strings. |
| 1552 | self.assertEqual(re.findall(r"(?i)(a)\1", "aa \u0100"), ['a']) |
| 1553 | self.assertEqual(re.match(r"(?s).{1,3}", "\u0100\u0100").span(), (0, 2)) |
Antoine Pitrou | 43fb54c | 2012-12-02 12:52:36 +0100 | [diff] [blame] | 1554 | |
Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 1555 | def test_repeat_minmax_overflow(self): |
| 1556 | # Issue #13169 |
| 1557 | string = "x" * 100000 |
| 1558 | self.assertEqual(re.match(r".{65535}", string).span(), (0, 65535)) |
| 1559 | self.assertEqual(re.match(r".{,65535}", string).span(), (0, 65535)) |
| 1560 | self.assertEqual(re.match(r".{65535,}?", string).span(), (0, 65535)) |
| 1561 | self.assertEqual(re.match(r".{65536}", string).span(), (0, 65536)) |
| 1562 | self.assertEqual(re.match(r".{,65536}", string).span(), (0, 65536)) |
| 1563 | self.assertEqual(re.match(r".{65536,}?", string).span(), (0, 65536)) |
| 1564 | # 2**128 should be big enough to overflow both SRE_CODE and Py_ssize_t. |
| 1565 | self.assertRaises(OverflowError, re.compile, r".{%d}" % 2**128) |
| 1566 | self.assertRaises(OverflowError, re.compile, r".{,%d}" % 2**128) |
| 1567 | self.assertRaises(OverflowError, re.compile, r".{%d,}?" % 2**128) |
| 1568 | self.assertRaises(OverflowError, re.compile, r".{%d,%d}" % (2**129, 2**128)) |
| 1569 | |
| 1570 | @cpython_only |
| 1571 | def test_repeat_minmax_overflow_maxrepeat(self): |
| 1572 | try: |
| 1573 | from _sre import MAXREPEAT |
| 1574 | except ImportError: |
| 1575 | self.skipTest('requires _sre.MAXREPEAT constant') |
| 1576 | string = "x" * 100000 |
| 1577 | self.assertIsNone(re.match(r".{%d}" % (MAXREPEAT - 1), string)) |
| 1578 | self.assertEqual(re.match(r".{,%d}" % (MAXREPEAT - 1), string).span(), |
| 1579 | (0, 100000)) |
| 1580 | self.assertIsNone(re.match(r".{%d,}?" % (MAXREPEAT - 1), string)) |
| 1581 | self.assertRaises(OverflowError, re.compile, r".{%d}" % MAXREPEAT) |
| 1582 | self.assertRaises(OverflowError, re.compile, r".{,%d}" % MAXREPEAT) |
| 1583 | self.assertRaises(OverflowError, re.compile, r".{%d,}?" % MAXREPEAT) |
| 1584 | |
R David Murray | 26dfaac9 | 2013-04-14 13:00:54 -0400 | [diff] [blame] | 1585 | def test_backref_group_name_in_exception(self): |
| 1586 | # Issue 17341: Poor error message when compiling invalid regex |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1587 | self.checkPatternError('(?P=<foo>)', |
| 1588 | "bad character in group name '<foo>'", 4) |
R David Murray | 26dfaac9 | 2013-04-14 13:00:54 -0400 | [diff] [blame] | 1589 | |
| 1590 | def test_group_name_in_exception(self): |
| 1591 | # Issue 17341: Poor error message when compiling invalid regex |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1592 | self.checkPatternError('(?P<?foo>)', |
| 1593 | "bad character in group name '?foo'", 4) |
R David Murray | 26dfaac9 | 2013-04-14 13:00:54 -0400 | [diff] [blame] | 1594 | |
Serhiy Storchaka | 1f35ae0 | 2013-08-03 19:18:38 +0300 | [diff] [blame] | 1595 | def test_issue17998(self): |
| 1596 | for reps in '*', '+', '?', '{1}': |
| 1597 | for mod in '', '?': |
| 1598 | pattern = '.' + reps + mod + 'yz' |
| 1599 | self.assertEqual(re.compile(pattern, re.S).findall('xyz'), |
| 1600 | ['xyz'], msg=pattern) |
| 1601 | pattern = pattern.encode() |
| 1602 | self.assertEqual(re.compile(pattern, re.S).findall(b'xyz'), |
| 1603 | [b'xyz'], msg=pattern) |
| 1604 | |
Serhiy Storchaka | 36af10c | 2013-10-20 13:13:31 +0300 | [diff] [blame] | 1605 | def test_match_repr(self): |
| 1606 | for string in '[abracadabra]', S('[abracadabra]'): |
| 1607 | m = re.search(r'(.+)(.*?)\1', string) |
| 1608 | self.assertEqual(repr(m), "<%s.%s object; " |
| 1609 | "span=(1, 12), match='abracadabra'>" % |
| 1610 | (type(m).__module__, type(m).__qualname__)) |
| 1611 | for string in (b'[abracadabra]', B(b'[abracadabra]'), |
| 1612 | bytearray(b'[abracadabra]'), |
| 1613 | memoryview(b'[abracadabra]')): |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 1614 | m = re.search(br'(.+)(.*?)\1', string) |
Serhiy Storchaka | 36af10c | 2013-10-20 13:13:31 +0300 | [diff] [blame] | 1615 | self.assertEqual(repr(m), "<%s.%s object; " |
| 1616 | "span=(1, 12), match=b'abracadabra'>" % |
| 1617 | (type(m).__module__, type(m).__qualname__)) |
| 1618 | |
| 1619 | first, second = list(re.finditer("(aa)|(bb)", "aa bb")) |
| 1620 | self.assertEqual(repr(first), "<%s.%s object; " |
| 1621 | "span=(0, 2), match='aa'>" % |
| 1622 | (type(second).__module__, type(first).__qualname__)) |
| 1623 | self.assertEqual(repr(second), "<%s.%s object; " |
| 1624 | "span=(3, 5), match='bb'>" % |
| 1625 | (type(second).__module__, type(second).__qualname__)) |
| 1626 | |
Serhiy Storchaka | 70ca021 | 2013-02-16 16:47:47 +0200 | [diff] [blame] | 1627 | |
Serhiy Storchaka | 98985a1 | 2013-08-19 23:18:23 +0300 | [diff] [blame] | 1628 | def test_bug_2537(self): |
| 1629 | # issue 2537: empty submatches |
| 1630 | for outer_op in ('{0,}', '*', '+', '{1,187}'): |
| 1631 | for inner_op in ('{0,}', '*', '?'): |
| 1632 | r = re.compile("^((x|y)%s)%s" % (inner_op, outer_op)) |
| 1633 | m = r.match("xyyzy") |
| 1634 | self.assertEqual(m.group(0), "xyy") |
| 1635 | self.assertEqual(m.group(1), "") |
| 1636 | self.assertEqual(m.group(2), "y") |
| 1637 | |
Antoine Pitrou | d2cc743 | 2014-02-03 20:59:59 +0100 | [diff] [blame] | 1638 | def test_debug_flag(self): |
Serhiy Storchaka | 44dae8b | 2014-09-21 22:47:55 +0300 | [diff] [blame] | 1639 | pat = r'(\.)(?:[ch]|py)(?(1)$|: )' |
Antoine Pitrou | d2cc743 | 2014-02-03 20:59:59 +0100 | [diff] [blame] | 1640 | with captured_stdout() as out: |
Serhiy Storchaka | 44dae8b | 2014-09-21 22:47:55 +0300 | [diff] [blame] | 1641 | re.compile(pat, re.DEBUG) |
| 1642 | dump = '''\ |
Serhiy Storchaka | be9a4e5 | 2016-09-10 00:57:55 +0300 | [diff] [blame] | 1643 | SUBPATTERN 1 0 0 |
Serhiy Storchaka | c7f7d38 | 2014-11-09 20:48:36 +0200 | [diff] [blame] | 1644 | LITERAL 46 |
Serhiy Storchaka | be9a4e5 | 2016-09-10 00:57:55 +0300 | [diff] [blame] | 1645 | SUBPATTERN None 0 0 |
Serhiy Storchaka | c7f7d38 | 2014-11-09 20:48:36 +0200 | [diff] [blame] | 1646 | BRANCH |
| 1647 | IN |
| 1648 | LITERAL 99 |
| 1649 | LITERAL 104 |
| 1650 | OR |
| 1651 | LITERAL 112 |
| 1652 | LITERAL 121 |
Serhiy Storchaka | be9a4e5 | 2016-09-10 00:57:55 +0300 | [diff] [blame] | 1653 | SUBPATTERN None 0 0 |
Serhiy Storchaka | c7f7d38 | 2014-11-09 20:48:36 +0200 | [diff] [blame] | 1654 | GROUPREF_EXISTS 1 |
| 1655 | AT AT_END |
| 1656 | ELSE |
| 1657 | LITERAL 58 |
| 1658 | LITERAL 32 |
Serhiy Storchaka | 44dae8b | 2014-09-21 22:47:55 +0300 | [diff] [blame] | 1659 | ''' |
| 1660 | self.assertEqual(out.getvalue(), dump) |
Antoine Pitrou | d2cc743 | 2014-02-03 20:59:59 +0100 | [diff] [blame] | 1661 | # Debug output is output again even a second time (bypassing |
| 1662 | # the cache -- issue #20426). |
| 1663 | with captured_stdout() as out: |
Serhiy Storchaka | 44dae8b | 2014-09-21 22:47:55 +0300 | [diff] [blame] | 1664 | re.compile(pat, re.DEBUG) |
| 1665 | self.assertEqual(out.getvalue(), dump) |
Antoine Pitrou | d2cc743 | 2014-02-03 20:59:59 +0100 | [diff] [blame] | 1666 | |
Serhiy Storchaka | ccdf352 | 2014-03-06 11:28:32 +0200 | [diff] [blame] | 1667 | def test_keyword_parameters(self): |
| 1668 | # Issue #20283: Accepting the string keyword parameter. |
| 1669 | pat = re.compile(r'(ab)') |
| 1670 | self.assertEqual( |
| 1671 | pat.match(string='abracadabra', pos=7, endpos=10).span(), (7, 9)) |
| 1672 | self.assertEqual( |
Serhiy Storchaka | a537eb4 | 2014-03-06 11:36:15 +0200 | [diff] [blame] | 1673 | pat.fullmatch(string='abracadabra', pos=7, endpos=9).span(), (7, 9)) |
| 1674 | self.assertEqual( |
Serhiy Storchaka | ccdf352 | 2014-03-06 11:28:32 +0200 | [diff] [blame] | 1675 | pat.search(string='abracadabra', pos=3, endpos=10).span(), (7, 9)) |
| 1676 | self.assertEqual( |
| 1677 | pat.findall(string='abracadabra', pos=3, endpos=10), ['ab']) |
| 1678 | self.assertEqual( |
| 1679 | pat.split(string='abracadabra', maxsplit=1), |
| 1680 | ['', 'ab', 'racadabra']) |
| 1681 | self.assertEqual( |
| 1682 | pat.scanner(string='abracadabra', pos=3, endpos=10).search().span(), |
| 1683 | (7, 9)) |
| 1684 | |
Serhiy Storchaka | 429b59e | 2014-05-14 21:48:17 +0300 | [diff] [blame] | 1685 | def test_bug_20998(self): |
| 1686 | # Issue #20998: Fullmatch of repeated single character pattern |
| 1687 | # with ignore case. |
| 1688 | self.assertEqual(re.fullmatch('[a-c]+', 'ABC', re.I).span(), (0, 3)) |
| 1689 | |
Serhiy Storchaka | 4659cc0 | 2014-10-31 00:53:49 +0200 | [diff] [blame] | 1690 | def test_locale_caching(self): |
| 1691 | # Issue #22410 |
| 1692 | oldlocale = locale.setlocale(locale.LC_CTYPE) |
| 1693 | self.addCleanup(locale.setlocale, locale.LC_CTYPE, oldlocale) |
| 1694 | for loc in 'en_US.iso88591', 'en_US.utf8': |
| 1695 | try: |
| 1696 | locale.setlocale(locale.LC_CTYPE, loc) |
| 1697 | except locale.Error: |
| 1698 | # Unsupported locale on this system |
| 1699 | self.skipTest('test needs %s locale' % loc) |
| 1700 | |
| 1701 | re.purge() |
| 1702 | self.check_en_US_iso88591() |
| 1703 | self.check_en_US_utf8() |
| 1704 | re.purge() |
| 1705 | self.check_en_US_utf8() |
| 1706 | self.check_en_US_iso88591() |
| 1707 | |
| 1708 | def check_en_US_iso88591(self): |
| 1709 | locale.setlocale(locale.LC_CTYPE, 'en_US.iso88591') |
| 1710 | self.assertTrue(re.match(b'\xc5\xe5', b'\xc5\xe5', re.L|re.I)) |
| 1711 | self.assertTrue(re.match(b'\xc5', b'\xe5', re.L|re.I)) |
| 1712 | self.assertTrue(re.match(b'\xe5', b'\xc5', re.L|re.I)) |
| 1713 | self.assertTrue(re.match(b'(?Li)\xc5\xe5', b'\xc5\xe5')) |
| 1714 | self.assertTrue(re.match(b'(?Li)\xc5', b'\xe5')) |
| 1715 | self.assertTrue(re.match(b'(?Li)\xe5', b'\xc5')) |
| 1716 | |
| 1717 | def check_en_US_utf8(self): |
| 1718 | locale.setlocale(locale.LC_CTYPE, 'en_US.utf8') |
| 1719 | self.assertTrue(re.match(b'\xc5\xe5', b'\xc5\xe5', re.L|re.I)) |
| 1720 | self.assertIsNone(re.match(b'\xc5', b'\xe5', re.L|re.I)) |
| 1721 | self.assertIsNone(re.match(b'\xe5', b'\xc5', re.L|re.I)) |
| 1722 | self.assertTrue(re.match(b'(?Li)\xc5\xe5', b'\xc5\xe5')) |
| 1723 | self.assertIsNone(re.match(b'(?Li)\xc5', b'\xe5')) |
| 1724 | self.assertIsNone(re.match(b'(?Li)\xe5', b'\xc5')) |
| 1725 | |
Serhiy Storchaka | ad446d5 | 2014-11-10 13:49:00 +0200 | [diff] [blame] | 1726 | def test_error(self): |
| 1727 | with self.assertRaises(re.error) as cm: |
| 1728 | re.compile('(\u20ac))') |
| 1729 | err = cm.exception |
| 1730 | self.assertIsInstance(err.pattern, str) |
| 1731 | self.assertEqual(err.pattern, '(\u20ac))') |
| 1732 | self.assertEqual(err.pos, 3) |
| 1733 | self.assertEqual(err.lineno, 1) |
| 1734 | self.assertEqual(err.colno, 4) |
| 1735 | self.assertIn(err.msg, str(err)) |
| 1736 | self.assertIn(' at position 3', str(err)) |
| 1737 | self.assertNotIn(' at position 3', err.msg) |
| 1738 | # Bytes pattern |
| 1739 | with self.assertRaises(re.error) as cm: |
| 1740 | re.compile(b'(\xa4))') |
| 1741 | err = cm.exception |
| 1742 | self.assertIsInstance(err.pattern, bytes) |
| 1743 | self.assertEqual(err.pattern, b'(\xa4))') |
| 1744 | self.assertEqual(err.pos, 3) |
| 1745 | # Multiline pattern |
| 1746 | with self.assertRaises(re.error) as cm: |
| 1747 | re.compile(""" |
| 1748 | ( |
| 1749 | abc |
| 1750 | ) |
| 1751 | ) |
| 1752 | ( |
| 1753 | """, re.VERBOSE) |
| 1754 | err = cm.exception |
| 1755 | self.assertEqual(err.pos, 77) |
| 1756 | self.assertEqual(err.lineno, 5) |
| 1757 | self.assertEqual(err.colno, 17) |
| 1758 | self.assertIn(err.msg, str(err)) |
| 1759 | self.assertIn(' at position 77', str(err)) |
| 1760 | self.assertIn('(line 5, column 17)', str(err)) |
| 1761 | |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1762 | def test_misc_errors(self): |
| 1763 | self.checkPatternError(r'(', 'missing ), unterminated subpattern', 0) |
| 1764 | self.checkPatternError(r'((a|b)', 'missing ), unterminated subpattern', 0) |
| 1765 | self.checkPatternError(r'(a|b))', 'unbalanced parenthesis', 5) |
| 1766 | self.checkPatternError(r'(?P', 'unexpected end of pattern', 3) |
| 1767 | self.checkPatternError(r'(?z)', 'unknown extension ?z', 1) |
| 1768 | self.checkPatternError(r'(?iz)', 'unknown flag', 3) |
Serhiy Storchaka | be9a4e5 | 2016-09-10 00:57:55 +0300 | [diff] [blame] | 1769 | self.checkPatternError(r'(?i', 'missing -, : or )', 3) |
Serhiy Storchaka | 632a77e | 2015-03-25 21:03:47 +0200 | [diff] [blame] | 1770 | self.checkPatternError(r'(?#abc', 'missing ), unterminated comment', 0) |
| 1771 | self.checkPatternError(r'(?<', 'unexpected end of pattern', 3) |
| 1772 | self.checkPatternError(r'(?<>)', 'unknown extension ?<>', 1) |
| 1773 | self.checkPatternError(r'(?', 'unexpected end of pattern', 2) |
| 1774 | |
Victor Stinner | 8bf43e6 | 2016-11-14 12:38:43 +0100 | [diff] [blame] | 1775 | def test_enum(self): |
| 1776 | # Issue #28082: Check that str(flag) returns a human readable string |
| 1777 | # instead of an integer |
| 1778 | self.assertIn('ASCII', str(re.A)) |
| 1779 | self.assertIn('DOTALL', str(re.S)) |
| 1780 | |
Victor Stinner | b44fb12 | 2016-11-21 16:35:08 +0100 | [diff] [blame] | 1781 | def test_pattern_compare(self): |
| 1782 | pattern1 = re.compile('abc', re.IGNORECASE) |
| 1783 | |
Victor Stinner | bcf4dcc | 2016-11-22 15:30:38 +0100 | [diff] [blame] | 1784 | # equal to itself |
| 1785 | self.assertEqual(pattern1, pattern1) |
| 1786 | self.assertFalse(pattern1 != pattern1) |
| 1787 | |
Victor Stinner | b44fb12 | 2016-11-21 16:35:08 +0100 | [diff] [blame] | 1788 | # equal |
| 1789 | re.purge() |
| 1790 | pattern2 = re.compile('abc', re.IGNORECASE) |
| 1791 | self.assertEqual(hash(pattern2), hash(pattern1)) |
| 1792 | self.assertEqual(pattern2, pattern1) |
| 1793 | |
| 1794 | # not equal: different pattern |
| 1795 | re.purge() |
| 1796 | pattern3 = re.compile('XYZ', re.IGNORECASE) |
| 1797 | # Don't test hash(pattern3) != hash(pattern1) because there is no |
| 1798 | # warranty that hash values are different |
| 1799 | self.assertNotEqual(pattern3, pattern1) |
| 1800 | |
| 1801 | # not equal: different flag (flags=0) |
| 1802 | re.purge() |
| 1803 | pattern4 = re.compile('abc') |
| 1804 | self.assertNotEqual(pattern4, pattern1) |
| 1805 | |
| 1806 | # only == and != comparison operators are supported |
| 1807 | with self.assertRaises(TypeError): |
| 1808 | pattern1 < pattern2 |
| 1809 | |
| 1810 | def test_pattern_compare_bytes(self): |
| 1811 | pattern1 = re.compile(b'abc') |
| 1812 | |
| 1813 | # equal: test bytes patterns |
| 1814 | re.purge() |
| 1815 | pattern2 = re.compile(b'abc') |
| 1816 | self.assertEqual(hash(pattern2), hash(pattern1)) |
| 1817 | self.assertEqual(pattern2, pattern1) |
| 1818 | |
| 1819 | # not equal: pattern of a different types (str vs bytes), |
| 1820 | # comparison must not raise a BytesWarning |
| 1821 | re.purge() |
| 1822 | pattern3 = re.compile('abc') |
| 1823 | with warnings.catch_warnings(): |
| 1824 | warnings.simplefilter('error', BytesWarning) |
| 1825 | self.assertNotEqual(pattern3, pattern1) |
| 1826 | |
Serhiy Storchaka | 7e10dbb | 2017-02-04 22:53:57 +0200 | [diff] [blame] | 1827 | def test_bug_29444(self): |
| 1828 | s = bytearray(b'abcdefgh') |
| 1829 | m = re.search(b'[a-h]+', s) |
| 1830 | m2 = re.search(b'[e-h]+', s) |
| 1831 | self.assertEqual(m.group(), b'abcdefgh') |
| 1832 | self.assertEqual(m2.group(), b'efgh') |
| 1833 | s[:] = b'xyz' |
| 1834 | self.assertEqual(m.group(), b'xyz') |
| 1835 | self.assertEqual(m2.group(), b'') |
| 1836 | |
Antoine Pitrou | 79aa68d | 2013-10-25 21:36:10 +0200 | [diff] [blame] | 1837 | |
Serhiy Storchaka | 5c24d0e | 2013-11-23 22:42:43 +0200 | [diff] [blame] | 1838 | class PatternReprTests(unittest.TestCase): |
| 1839 | def check(self, pattern, expected): |
| 1840 | self.assertEqual(repr(re.compile(pattern)), expected) |
| 1841 | |
| 1842 | def check_flags(self, pattern, flags, expected): |
| 1843 | self.assertEqual(repr(re.compile(pattern, flags)), expected) |
| 1844 | |
| 1845 | def test_without_flags(self): |
| 1846 | self.check('random pattern', |
| 1847 | "re.compile('random pattern')") |
| 1848 | |
| 1849 | def test_single_flag(self): |
| 1850 | self.check_flags('random pattern', re.IGNORECASE, |
| 1851 | "re.compile('random pattern', re.IGNORECASE)") |
| 1852 | |
| 1853 | def test_multiple_flags(self): |
| 1854 | self.check_flags('random pattern', re.I|re.S|re.X, |
| 1855 | "re.compile('random pattern', " |
| 1856 | "re.IGNORECASE|re.DOTALL|re.VERBOSE)") |
| 1857 | |
| 1858 | def test_unicode_flag(self): |
| 1859 | self.check_flags('random pattern', re.U, |
| 1860 | "re.compile('random pattern')") |
| 1861 | self.check_flags('random pattern', re.I|re.S|re.U, |
| 1862 | "re.compile('random pattern', " |
| 1863 | "re.IGNORECASE|re.DOTALL)") |
| 1864 | |
| 1865 | def test_inline_flags(self): |
| 1866 | self.check('(?i)pattern', |
| 1867 | "re.compile('(?i)pattern', re.IGNORECASE)") |
| 1868 | |
| 1869 | def test_unknown_flags(self): |
| 1870 | self.check_flags('random pattern', 0x123000, |
| 1871 | "re.compile('random pattern', 0x123000)") |
| 1872 | self.check_flags('random pattern', 0x123000|re.I, |
| 1873 | "re.compile('random pattern', re.IGNORECASE|0x123000)") |
| 1874 | |
| 1875 | def test_bytes(self): |
| 1876 | self.check(b'bytes pattern', |
| 1877 | "re.compile(b'bytes pattern')") |
| 1878 | self.check_flags(b'bytes pattern', re.A, |
| 1879 | "re.compile(b'bytes pattern', re.ASCII)") |
| 1880 | |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1881 | def test_locale(self): |
| 1882 | self.check_flags(b'bytes pattern', re.L, |
| 1883 | "re.compile(b'bytes pattern', re.LOCALE)") |
| 1884 | |
Serhiy Storchaka | 5c24d0e | 2013-11-23 22:42:43 +0200 | [diff] [blame] | 1885 | def test_quotes(self): |
| 1886 | self.check('random "double quoted" pattern', |
| 1887 | '''re.compile('random "double quoted" pattern')''') |
| 1888 | self.check("random 'single quoted' pattern", |
| 1889 | '''re.compile("random 'single quoted' pattern")''') |
| 1890 | self.check('''both 'single' and "double" quotes''', |
| 1891 | '''re.compile('both \\'single\\' and "double" quotes')''') |
| 1892 | |
| 1893 | def test_long_pattern(self): |
| 1894 | pattern = 'Very %spattern' % ('long ' * 1000) |
| 1895 | r = repr(re.compile(pattern)) |
| 1896 | self.assertLess(len(r), 300) |
| 1897 | self.assertEqual(r[:30], "re.compile('Very long long lon") |
| 1898 | r = repr(re.compile(pattern, re.I)) |
| 1899 | self.assertLess(len(r), 300) |
| 1900 | self.assertEqual(r[:30], "re.compile('Very long long lon") |
| 1901 | self.assertEqual(r[-16:], ", re.IGNORECASE)") |
| 1902 | |
| 1903 | |
Antoine Pitrou | 79aa68d | 2013-10-25 21:36:10 +0200 | [diff] [blame] | 1904 | class ImplementationTest(unittest.TestCase): |
| 1905 | """ |
| 1906 | Test implementation details of the re module. |
| 1907 | """ |
| 1908 | |
| 1909 | def test_overlap_table(self): |
| 1910 | f = sre_compile._generate_overlap_table |
| 1911 | self.assertEqual(f(""), []) |
| 1912 | self.assertEqual(f("a"), [0]) |
| 1913 | self.assertEqual(f("abcd"), [0, 0, 0, 0]) |
| 1914 | self.assertEqual(f("aaaa"), [0, 1, 2, 3]) |
| 1915 | self.assertEqual(f("ababba"), [0, 0, 1, 2, 0, 1]) |
| 1916 | self.assertEqual(f("abcabdac"), [0, 0, 0, 1, 2, 0, 1, 0]) |
| 1917 | |
| 1918 | |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1919 | class ExternalTests(unittest.TestCase): |
Guido van Rossum | 8e0ce30 | 1997-07-11 19:34:44 +0000 | [diff] [blame] | 1920 | |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1921 | def test_re_benchmarks(self): |
| 1922 | 're_tests benchmarks' |
| 1923 | from test.re_tests import benchmarks |
| 1924 | for pattern, s in benchmarks: |
| 1925 | with self.subTest(pattern=pattern, string=s): |
| 1926 | p = re.compile(pattern) |
| 1927 | self.assertTrue(p.search(s)) |
| 1928 | self.assertTrue(p.match(s)) |
| 1929 | self.assertTrue(p.fullmatch(s)) |
| 1930 | s2 = ' '*10000 + s + ' '*10000 |
| 1931 | self.assertTrue(p.search(s2)) |
| 1932 | self.assertTrue(p.match(s2, 10000)) |
| 1933 | self.assertTrue(p.match(s2, 10000, 10000 + len(s))) |
| 1934 | self.assertTrue(p.fullmatch(s2, 10000, 10000 + len(s))) |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1935 | |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1936 | def test_re_tests(self): |
| 1937 | 're_tests test suite' |
| 1938 | from test.re_tests import tests, SUCCEED, FAIL, SYNTAX_ERROR |
| 1939 | for t in tests: |
| 1940 | pattern = s = outcome = repl = expected = None |
| 1941 | if len(t) == 5: |
| 1942 | pattern, s, outcome, repl, expected = t |
| 1943 | elif len(t) == 3: |
| 1944 | pattern, s, outcome = t |
Guido van Rossum | 41360a4 | 1998-03-26 19:42:58 +0000 | [diff] [blame] | 1945 | else: |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1946 | raise ValueError('Test tuples should have 3 or 5 fields', t) |
| 1947 | |
| 1948 | with self.subTest(pattern=pattern, string=s): |
| 1949 | if outcome == SYNTAX_ERROR: # Expected a syntax error |
| 1950 | with self.assertRaises(re.error): |
| 1951 | re.compile(pattern) |
| 1952 | continue |
| 1953 | |
| 1954 | obj = re.compile(pattern) |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1955 | result = obj.search(s) |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1956 | if outcome == FAIL: |
| 1957 | self.assertIsNone(result, 'Succeeded incorrectly') |
| 1958 | continue |
| 1959 | |
| 1960 | with self.subTest(): |
| 1961 | self.assertTrue(result, 'Failed incorrectly') |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1962 | # Matched, as expected, so now we compute the |
| 1963 | # result string and compare it to our expected result. |
| 1964 | start, end = result.span(0) |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1965 | vardict = {'found': result.group(0), |
| 1966 | 'groups': result.group(), |
| 1967 | 'flags': result.re.flags} |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1968 | for i in range(1, 100): |
| 1969 | try: |
| 1970 | gi = result.group(i) |
| 1971 | # Special hack because else the string concat fails: |
| 1972 | if gi is None: |
| 1973 | gi = "None" |
| 1974 | except IndexError: |
| 1975 | gi = "Error" |
| 1976 | vardict['g%d' % i] = gi |
| 1977 | for i in result.re.groupindex.keys(): |
| 1978 | try: |
| 1979 | gi = result.group(i) |
| 1980 | if gi is None: |
| 1981 | gi = "None" |
| 1982 | except IndexError: |
| 1983 | gi = "Error" |
| 1984 | vardict[i] = gi |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1985 | self.assertEqual(eval(repl, vardict), expected, |
| 1986 | 'grouping error') |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1987 | |
Antoine Pitrou | 22628c4 | 2008-07-22 17:53:22 +0000 | [diff] [blame] | 1988 | # Try the match with both pattern and string converted to |
| 1989 | # bytes, and check that it still succeeds. |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 1990 | try: |
Antoine Pitrou | 22628c4 | 2008-07-22 17:53:22 +0000 | [diff] [blame] | 1991 | bpat = bytes(pattern, "ascii") |
| 1992 | bs = bytes(s, "ascii") |
| 1993 | except UnicodeEncodeError: |
| 1994 | # skip non-ascii tests |
| 1995 | pass |
| 1996 | else: |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 1997 | with self.subTest('bytes pattern match'): |
Serhiy Storchaka | 22a309a | 2014-12-01 11:50:07 +0200 | [diff] [blame] | 1998 | obj = re.compile(bpat) |
| 1999 | self.assertTrue(obj.search(bs)) |
| 2000 | |
| 2001 | # Try the match with LOCALE enabled, and check that it |
| 2002 | # still succeeds. |
| 2003 | with self.subTest('locale-sensitive match'): |
| 2004 | obj = re.compile(bpat, re.LOCALE) |
| 2005 | result = obj.search(bs) |
| 2006 | if result is None: |
| 2007 | print('=== Fails on locale-sensitive match', t) |
Fredrik Lundh | 8e6d571 | 2000-08-08 17:06:53 +0000 | [diff] [blame] | 2008 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 2009 | # Try the match with the search area limited to the extent |
| 2010 | # of the match and see if it still succeeds. \B will |
| 2011 | # break (because it won't match at the end or start of a |
| 2012 | # string), so we'll ignore patterns that feature it. |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 2013 | if (pattern[:2] != r'\B' and pattern[-2:] != r'\B' |
| 2014 | and result is not None): |
| 2015 | with self.subTest('range-limited match'): |
| 2016 | obj = re.compile(pattern) |
| 2017 | self.assertTrue(obj.search(s, start, end + 1)) |
Fredrik Lundh | 1151a8c | 2000-08-08 16:47:42 +0000 | [diff] [blame] | 2018 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 2019 | # Try the match with IGNORECASE enabled, and check that it |
| 2020 | # still succeeds. |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 2021 | with self.subTest('case-insensitive match'): |
| 2022 | obj = re.compile(pattern, re.IGNORECASE) |
| 2023 | self.assertTrue(obj.search(s)) |
Guido van Rossum | dfa6790 | 1997-12-08 17:12:06 +0000 | [diff] [blame] | 2024 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 2025 | # Try the match with UNICODE locale enabled, and check |
| 2026 | # that it still succeeds. |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 2027 | with self.subTest('unicode-sensitive match'): |
| 2028 | obj = re.compile(pattern, re.UNICODE) |
| 2029 | self.assertTrue(obj.search(s)) |
Fredrik Lundh | 8e6d571 | 2000-08-08 17:06:53 +0000 | [diff] [blame] | 2030 | |
Gregory P. Smith | 5a63183 | 2010-07-27 05:31:29 +0000 | [diff] [blame] | 2031 | |
Skip Montanaro | 8ed06da | 2003-04-24 19:43:18 +0000 | [diff] [blame] | 2032 | if __name__ == "__main__": |
Serhiy Storchaka | 9cba989 | 2014-12-01 11:06:45 +0200 | [diff] [blame] | 2033 | unittest.main() |