Merge pull request #849 from public/changeup-exceptions-2-electric-boogaloo

Use a single tagged exception instead of a hierarchy

1 files changed, 4 insertions, 2 deletions

diff --git a/tests/hazmat/backends/test_commoncrypto.py b/tests/hazmat/backends/test_commoncrypto.py
index 72ed61c0..7c703f67 100644
--- a/tests/hazmat/backends/test_commoncrypto.py
+++ b/tests/hazmat/backends/test_commoncrypto.py
@@ -16,13 +16,15 @@ from __future__ import absolute_import, division, print_function
 import pytest
 
 from cryptography import utils
-from cryptography.exceptions import InternalError, UnsupportedCipher
+from cryptography.exceptions import InternalError, _Reasons
 from cryptography.hazmat.bindings.commoncrypto.binding import Binding
 from cryptography.hazmat.primitives import interfaces
 from cryptography.hazmat.primitives.ciphers.algorithms import AES
 from cryptography.hazmat.primitives.ciphers.base import Cipher
 from cryptography.hazmat.primitives.ciphers.modes import CBC, GCM
 
+from ...utils import raises_unsupported_algorithm
+
 
 @utils.register_interface(interfaces.CipherAlgorithm)
 class DummyCipher(object):
@@ -63,5 +65,5 @@ class TestCommonCrypto(object):
         cipher = Cipher(
             DummyCipher(), GCM(b"fake_iv_here"), backend=b,
         )
-        with pytest.raises(UnsupportedCipher):
+        with raises_unsupported_algorithm(_Reasons.UNSUPPORTED_CIPHER):
             cipher.encryptor()