From: INADA Naoki <methane@users.noreply.github.com>
Date: Mon, 1 Oct 2018 12:10:37 +0000 (+0900)
Subject: bpo-30167: Add test for module.__cached__ is None (GH-7617)
X-Git-Tag: v3.8.0a1~851
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d4c76d960b8b286b75c933780416ace9cda682fd;p=thirdparty%2FPython%2Fcpython.git

bpo-30167: Add test for module.__cached__ is None (GH-7617)
---

diff --git a/Lib/test/test_site.py b/Lib/test/test_site.py
index dc59e5917cfa..33a8f1a44ccc 100644
--- a/Lib/test/test_site.py
+++ b/Lib/test/test_site.py
@@ -389,6 +389,17 @@ class ImportSideEffectTests(unittest.TestCase):
                             "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()