Issue #14637: Fix the UNC import test under Windows to actually use

brettcannon · brettcannon · commit b8c0206bd4b1 · 2012-04-21T19:11:58.000-04:00
the UNC path. Also clean up sys.path and invalidate finder caches.

Thanks to Vinay Sajip for spotting the use of the wrong path.
diff --git a/Lib/test/test_import.py b/Lib/test/test_import.py
@@ -459,17 +459,21 @@ def test_trailing_slash(self):
     def test_UNC_path(self):
         with open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') as f:
             f.write("testdata = 'test_trailing_slash'")
+        importlib.invalidate_caches()
         # Create the UNC path, like \\myhost\c$\foo\bar.
         path = os.path.abspath(self.path)
         import socket
         hn = socket.gethostname()
         drive = path[0]
         unc = "\\\\%s\\%s$"%(hn, drive)
         unc += path[2:]
-        sys.path.append(path)
-        mod = __import__("test_trailing_slash")
-        self.assertEqual(mod.testdata, 'test_trailing_slash')
-        unload("test_trailing_slash")
+        sys.path.append(unc)
+        try:
+            mod = __import__("test_trailing_slash")
+            self.assertEqual(mod.testdata, 'test_trailing_slash')
+            unload("test_trailing_slash")
+        finally:
+            sys.path.remove(unc)
 
 
 class RelativeImportTests(unittest.TestCase):
