JohnJamesUtley
diff --git a/‎Lib/test/test_unittest/test_case.py
Copy file name to clipboardExpand all lines: Lib/test/test_unittest/test_case.py
+2-1Lines changed: 2 additions & 1 deletion b/‎Lib/test/test_unittest/test_case.py
Copy file name to clipboardExpand all lines: Lib/test/test_unittest/test_case.py
+2-1Lines changed: 2 additions & 1 deletion
@@ -304,7 +304,8 @@ def defaultTestResult(self):
             def test(self):
                 pass
 
-        Foo('test').run()
+        with self.assertWarns(RuntimeWarning):
+            Foo('test').run()
 
     def test_deprecation_of_return_val_from_test(self):
         # Issue 41322 - deprecate return of value that is not None from a test