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Issue #22423: Fixed debugging output of the GROUPREF_EXISTS opcode in the re

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module.
This commit is contained in:
Serhiy Storchaka 2014-09-21 22:47:55 +03:00
parent 1a5426dbaf
commit 44dae8bde3
3 changed files with 54 additions and 22 deletions
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29
Lib/test/test_re.py
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@ -1203,16 +1203,33 @@ class ReTests(unittest.TestCase):
self.assertEqual(m.group(2), "y")
def test_debug_flag(self):
pat = r'(\.)(?:[ch]|py)(?(1)$|: )'
with captured_stdout() as out:
re.compile('foo', re.DEBUG)
self.assertEqual(out.getvalue().splitlines(),
['literal 102 ', 'literal 111 ', 'literal 111 '])
re.compile(pat, re.DEBUG)
dump = '''\
subpattern 1
literal 46
subpattern None
branch
in
literal 99
literal 104
or
literal 112
literal 121
subpattern None
groupref_exists 1
at at_end
else
literal 58
literal 32
'''
self.assertEqual(out.getvalue(), dump)
# Debug output is output again even a second time (bypassing
# the cache -- issue #20426).
with captured_stdout() as out:
re.compile('foo', re.DEBUG)
self.assertEqual(out.getvalue().splitlines(),
['literal 102 ', 'literal 111 ', 'literal 111 '])
re.compile(pat, re.DEBUG)
self.assertEqual(out.getvalue(), dump)
def test_keyword_parameters(self):
# Issue #20283: Accepting the string keyword parameter.