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Issue #22493: Warning message emitted by using inline flags in the middle of

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regular expression now contains a (truncated) regex pattern.
Patch by Tim Graham.
This commit is contained in:
Serhiy Storchaka 2016-09-17 01:29:58 +03:00
parent 8761e59f36
commit abf275af58
3 changed files with 26 additions and 4 deletions
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17
Lib/test/test_re.py
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@ -1323,8 +1323,21 @@ class ReTests(unittest.TestCase):
self.assertTrue(re.match('(?ixu) ' + upper_char, lower_char))
self.assertTrue(re.match('(?ixu) ' + lower_char, upper_char))
with self.assertWarns(DeprecationWarning):
self.assertTrue(re.match(upper_char + '(?i)', lower_char))
p = upper_char + '(?i)'
with self.assertWarns(DeprecationWarning) as warns:
self.assertTrue(re.match(p, lower_char))
self.assertEqual(
str(warns.warnings[0].message),
'Flags not at the start of the expression %s' % p
)
p = upper_char + '(?i)%s' % ('.?' * 100)
with self.assertWarns(DeprecationWarning) as warns:
self.assertTrue(re.match(p, lower_char))
self.assertEqual(
str(warns.warnings[0].message),
'Flags not at the start of the expression %s (truncated)' % p[:20]
)
def test_dollar_matches_twice(self):
"$ matches the end of string, and just before the terminating \n"