rewrite with assertIs

benjaminp · benjaminp · commit 2ec8cbc75fb6 · 2011-02-25T14:05:42.000Z
diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
@@ -461,9 +461,8 @@ def test_copy(self):
         # test that it's a shallow, not a deep copy
         u = self.type2test([1, 2, [3, 4], 5])
         v = u.copy()
-        v[2].append(666)
-        self.assertEqual(u, [1, 2, [3, 4, 666], 5])
         self.assertEqual(u, v)
+        self.assertIs(v[3], u[3])
 
         self.assertRaises(TypeError, u.copy, None)
 
