bpo-32557: allow shutil.disk_usage to take a file path on Windows also (GH-9372)



https://bugs.python.org/issue32557
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index a169c36..9db6aec 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -1363,6 +1363,7 @@
                          "disk_usage not available on this platform")
     def test_disk_usage(self):
         usage = shutil.disk_usage(os.path.dirname(__file__))
+        self.assertEqual(usage, shutil.disk_usage(__file__))
         self.assertGreater(usage.total, 0)
         self.assertGreater(usage.used, 0)
         self.assertGreaterEqual(usage.free, 0)