Add tests for Issue #10646.

This issue is now fixed due to changes in Issue #11939, so I've refactored
the tests to cover the hard link case. There are no code changes here.

Lib/test/test_genericpath.py

@@ -205,13 +205,19 @@ class GenericTest(unittest.TestCase):
             os.remove(test_fn)
 
     @support.skip_unless_symlink
-    def test_samefile_on_links(self):
+    def test_samefile_on_symlink(self):
+        self._test_samefile_on_link_func(os.symlink)
+
+    def test_samefile_on_link(self):
+        self._test_samefile_on_link_func(os.link)
+
+    def _test_samefile_on_link_func(self, func):
         try:
             test_fn1 = support.TESTFN + "1"
             test_fn2 = support.TESTFN + "2"
             self._create_file(test_fn1)
 
-            os.symlink(test_fn1, test_fn2)
+            func(test_fn1, test_fn2)
             self.assertTrue(self.pathmodule.samefile(test_fn1, test_fn2))
             os.remove(test_fn2)
 
@@ -232,13 +238,19 @@ class GenericTest(unittest.TestCase):
             os.remove(test_fn)
 
     @support.skip_unless_symlink
-    def test_samestat_on_links(self):
+    def test_samestat_on_symlink(self):
+        self._test_samestat_on_link_func(os.symlink)
+
+    def test_samestat_on_link(self):
+        self._test_samestat_on_link_func(os.link)
+
+    def _test_samestat_on_link_func(self, func):
         try:
             test_fn1 = support.TESTFN + "1"
             test_fn2 = support.TESTFN + "2"
             self._create_file(test_fn1)
             test_fns = (test_fn1, test_fn2)
-            os.symlink(*test_fns)
+            func(*test_fns)
             stats = map(os.stat, test_fns)
             self.assertTrue(self.pathmodule.samestat(*stats))
             os.remove(test_fn2)

Misc/NEWS

@@ -516,6 +516,9 @@ Extension Modules
 Tests
 -----
 
+- Issue #10646: Tests rearranged for os.samefile/samestat to check for not
+  just symlinks but also hard links.
+
 - Issue #16664: Add regression tests for glob's behaviour concerning entries
   starting with a ".".  Patch by Sebastian Kreft.