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Diffstat (limited to 'tests/hazmat/primitives/test_hmac.py')
-rw-r--r-- | tests/hazmat/primitives/test_hmac.py | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/test_hmac.py b/tests/hazmat/primitives/test_hmac.py new file mode 100644 index 00000000..42726a7c --- /dev/null +++ b/tests/hazmat/primitives/test_hmac.py @@ -0,0 +1,57 @@ +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or +# implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +from __future__ import absolute_import, division, print_function + +import pretend + +import pytest + +import six + +from cryptography.hazmat.primitives import hashes, hmac + +from .utils import generate_base_hmac_test + + +class TestHMAC(object): + test_copy = generate_base_hmac_test( + hashes.MD5, + only_if=lambda backend: backend.hashes.supported(hashes.MD5), + skip_message="Does not support MD5", + ) + + def test_hmac_reject_unicode(self, backend): + h = hmac.HMAC(key=b"mykey", digestmod=hashes.SHA1, backend=backend) + with pytest.raises(TypeError): + h.update(six.u("\u00FC")) + + def test_base_hash_hexdigest_string_type(self, backend): + h = hmac.HMAC(key=b"mykey", digestmod=hashes.SHA1, backend=backend, + msg=b"") + assert isinstance(h.hexdigest(), str) + + def test_hmac_no_digestmod(self): + with pytest.raises(TypeError): + hmac.HMAC(key=b"shortkey") + + +class TestCopyHMAC(object): + def test_copy_backend_object(self): + pretend_hmac = pretend.stub(copy_ctx=lambda a: True) + pretend_backend = pretend.stub(hmacs=pretend_hmac) + pretend_ctx = pretend.stub() + h = hmac.HMAC(b"key", digestmod=hashes.SHA1, backend=pretend_backend, + ctx=pretend_ctx) + assert h._backend is pretend_backend + assert h.copy()._backend is pretend_backend |