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Issue #28847: A deprecation warning is now emitted if the index file is missed

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and recreated in the 'r' and 'w' modes (will be an error in future Python
releases).
This commit is contained in:
Serhiy Storchaka 2016-12-07 11:11:12 +02:00
parent 43153e4d49
commit 4fc7942118
3 changed files with 24 additions and 3 deletions
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14
Lib/test/test_dbm_dumb.py
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@ -252,6 +252,20 @@ class DumbDBMTestCase(unittest.TestCase):
f = dumbdbm.open(_fname, value)
f.close()
def test_missing_index(self):
with dumbdbm.open(_fname, 'n') as f:
pass
os.unlink(_fname + '.dir')
for value in ('r', 'w'):
with self.assertWarnsRegex(DeprecationWarning,
"The index file is missing, the "
"semantics of the 'c' flag will "
"be used."):
f = dumbdbm.open(_fname, value)
f.close()
self.assertEqual(os.path.exists(_fname + '.dir'), value == 'w')
self.assertFalse(os.path.exists(_fname + '.bak'))
def test_invalid_flag(self):
for flag in ('x', 'rf', None):
with self.assertWarnsRegex(DeprecationWarning,