1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index b671cbc..8bb2079 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -341,6 +341,12 @@ class ExceptionTests(unittest.TestCase):
         else:
             self.fail("No exception raised")
 
+    def testInvalidAttrs(self):
+        self.assertRaises(TypeError, setattr, Exception(), '__cause__', 1)
+        self.assertRaises(TypeError, delattr, Exception(), '__cause__')
+        self.assertRaises(TypeError, setattr, Exception(), '__context__', 1)
+        self.assertRaises(TypeError, delattr, Exception(), '__context__')
+
     def testNoneClearsTracebackAttr(self):
         try:
             raise IndexError(4)