create AEADEncryptionContext and DecryptionContext
diff --git a/tests/hazmat/primitives/utils.py b/tests/hazmat/primitives/utils.py
index 58b9a91..9aa3a89 100644
--- a/tests/hazmat/primitives/utils.py
+++ b/tests/hazmat/primitives/utils.py
@@ -351,5 +351,5 @@
     )
     decryptor = cipher.decryptor()
     decryptor.update(b"a" * 16)
-    with pytest.raises(TypeError):
+    with pytest.raises(AttributeError):
         decryptor.tag