Minor tweaking of previous r78734, and add a NEWS entry.

Lib/test/test_macpath.py

@@ -56,7 +56,7 @@ class MacPathTestCase(unittest.TestCase):
                                   'normpath() returned str instead of unicode')
 
 class MacCommonTest(test_genericpath.CommonTest):
-    path = macpath
+    pathmodule = macpath
 
 
 def test_main():

Lib/test/test_ntpath.py

@@ -178,7 +178,7 @@ class TestNtpath(unittest.TestCase):
 
 
 class NtCommonTest(test_genericpath.CommonTest):
-    path = ntpath
+    pathmodule = ntpath
     attributes = ['relpath', 'splitunc']
 
 

Lib/test/test_posixpath.py

@@ -327,7 +327,7 @@ class PosixPathTest(unittest.TestCase):
 
 
 class PosixCommonTest(test_genericpath.CommonTest):
-    path = posixpath
+    pathmodule = posixpath
     attributes = ['relpath', 'samefile', 'sameopenfile', 'samestat']
 
 

Misc/NEWS

@@ -126,6 +126,9 @@ Extension Modules
 Tests
 -----
 
+- The four path modules (genericpath, macpath, ntpath, posixpath) share a
+  common TestCase for some tests: test_genericpath.CommonTest.
+
 - Print platform information when running the whole test suite, or using
   the --verbose flag.