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bpo-30167: Add test for module.__cached__ is None #7617

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Oct 1, 2018
Merged

bpo-30167: Add test for module.__cached__ is None #7617

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11 changes: 11 additions & 0 deletions Lib/test/test_site.py
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Original file line number Diff line number Diff line change
Expand Up @@ -383,6 +383,17 @@ def test_abs_paths(self):
"expected absolute path, got {}"
.format(os__cached__.decode('ascii')))

def test_abs_paths_cached_None(self):
"""Test for __cached__ is None.

Regarding to PEP 3147, __cached__ can be None.

See also: https://bugs.python.org/issue30167
"""
sys.modules['test'].__cached__ = None
site.abs_paths()
self.assertIsNone(sys.modules['test'].__cached__)

def test_no_duplicate_paths(self):
# No duplicate paths should exist in sys.path
# Handled by removeduppaths()
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