backout fac649bf2d10 (#9179) for further consideration
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index a7d2291..5e2914d 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -449,7 +449,7 @@
self.assertEqual(re.match("a.*b", "a\n\nb", re.DOTALL).group(0),
"a\n\nb")
- def test_lookahead(self):
+ def test_non_consuming(self):
self.assertEqual(re.match("(a(?=\s[^a]))", "a b").group(1), "a")
self.assertEqual(re.match("(a(?=\s[^a]*))", "a b").group(1), "a")
self.assertEqual(re.match("(a(?=\s[abc]))", "a b").group(1), "a")
@@ -463,42 +463,6 @@
self.assertEqual(re.match(r"(a)(?!\s\1)", "a b").group(1), "a")
self.assertEqual(re.match(r"(a)(?!\s(abc|a))", "a b").group(1), "a")
- # Group reference.
- self.assertTrue(re.match(r'(a)b(?=\1)a', 'aba'))
- self.assertIsNone(re.match(r'(a)b(?=\1)c', 'abac'))
- # Conditional group reference.
- self.assertTrue(re.match('(?:(a)|(x))b(?=(?(2)x|c))c', 'abc'))
- self.assertIsNone(re.match('(?:(a)|(x))b(?=(?(2)c|x))c', 'abc'))
- self.assertTrue(re.match('(?:(a)|(x))b(?=(?(2)x|c))c', 'abc'))
- self.assertIsNone(re.match('(?:(a)|(x))b(?=(?(1)b|x))c', 'abc'))
- self.assertTrue(re.match('(?:(a)|(x))b(?=(?(1)c|x))c', 'abc'))
- # Group used before defined.
- self.assertTrue(re.match('(a)b(?=(?(2)x|c))(c)', 'abc'))
- self.assertIsNone(re.match('(a)b(?=(?(2)b|x))(c)', 'abc'))
- self.assertTrue(re.match('(a)b(?=(?(1)c|x))(c)', 'abc'))
-
- def test_lookbehind(self):
- self.assertTrue(re.match('ab(?<=b)c', 'abc'))
- self.assertIsNone(re.match('ab(?<=c)c', 'abc'))
- self.assertIsNone(re.match('ab(?<!b)c', 'abc'))
- self.assertTrue(re.match('ab(?<!c)c', 'abc'))
- # Group reference.
- self.assertTrue(re.match(r'(a)a(?<=\1)c', 'aac'))
- self.assertIsNone(re.match(r'(a)b(?<=\1)a', 'abaa'))
- self.assertIsNone(re.match(r'(a)a(?<!\1)c', 'aac'))
- self.assertTrue(re.match(r'(a)b(?<!\1)a', 'abaa'))
- # Conditional group reference.
- self.assertIsNone(re.match('(?:(a)|(x))b(?<=(?(2)x|c))c', 'abc'))
- self.assertIsNone(re.match('(?:(a)|(x))b(?<=(?(2)b|x))c', 'abc'))
- self.assertTrue(re.match('(?:(a)|(x))b(?<=(?(2)x|b))c', 'abc'))
- self.assertIsNone(re.match('(?:(a)|(x))b(?<=(?(1)c|x))c', 'abc'))
- self.assertTrue(re.match('(?:(a)|(x))b(?<=(?(1)b|x))c', 'abc'))
- # Group used before defined.
- self.assertIsNone(re.match('(a)b(?<=(?(2)x|c))(c)', 'abc'))
- self.assertIsNone(re.match('(a)b(?<=(?(2)b|x))(c)', 'abc'))
- self.assertIsNone(re.match('(a)b(?<=(?(1)c|x))(c)', 'abc'))
- self.assertTrue(re.match('(a)b(?<=(?(1)b|x))(c)', 'abc'))
-
def test_ignore_case(self):
self.assertEqual(re.match("abc", "ABC", re.I).group(0), "ABC")
self.assertEqual(re.match("abc", u"ABC", re.I).group(0), "ABC")