diff options
Diffstat (limited to 'tests/hazmat/primitives/test_hashes.py')
| -rw-r--r-- | tests/hazmat/primitives/test_hashes.py | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/tests/hazmat/primitives/test_hashes.py b/tests/hazmat/primitives/test_hashes.py index fc53d635..5b318f64 100644 --- a/tests/hazmat/primitives/test_hashes.py +++ b/tests/hazmat/primitives/test_hashes.py @@ -20,7 +20,10 @@ import pytest import six from cryptography import utils -from cryptography.exceptions import AlreadyFinalized, UnsupportedHash +from cryptography.exceptions import ( + AlreadyFinalized, UnsupportedHash, UnsupportedInterface +) +from cryptography.hazmat.backends.interfaces import HashBackend from cryptography.hazmat.primitives import hashes, interfaces from .utils import generate_base_hash_test @@ -39,7 +42,11 @@ class TestHashContext(object): m.update(six.u("\u00FC")) def test_copy_backend_object(self): - pretend_backend = pretend.stub() + @utils.register_interface(HashBackend) + class PretendBackend(object): + pass + + pretend_backend = PretendBackend() copied_ctx = pretend.stub() pretend_ctx = pretend.stub(copy=lambda: copied_ctx) h = hashes.Hash(hashes.SHA1(), backend=pretend_backend, @@ -171,3 +178,10 @@ class TestMD5(object): digest_size=16, block_size=64, ) + + +def test_invalid_backend(): + pretend_backend = object() + + with pytest.raises(UnsupportedInterface): + hashes.Hash(hashes.SHA1(), pretend_backend) |