Merge pull request #188 from dstufft/hazmat

Create a Hazardous Materials Area

1 files changed, 135 insertions, 0 deletions

diff --git a/tests/hazmat/primitives/test_hashes.py b/tests/hazmat/primitives/test_hashes.py
new file mode 100644
index 00000000..797fe4ff
--- /dev/null
+++ b/tests/hazmat/primitives/test_hashes.py
@@ -0,0 +1,135 @@
+# 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.bindings import _default_backend
+from cryptography.hazmat.primitives import hashes
+
+from .utils import generate_base_hash_test
+
+
+class TestBaseHash(object):
+    def test_base_hash_reject_unicode(self, backend):
+        m = hashes.SHA1(backend=backend)
+        with pytest.raises(TypeError):
+            m.update(six.u("\u00FC"))
+
+    def test_base_hash_hexdigest_string_type(self, backend):
+        m = hashes.SHA1(backend=backend, data=b"")
+        assert isinstance(m.hexdigest(), str)
+
+
+class TestCopyHash(object):
+    def test_copy_backend_object(self):
+        pretend_hashes = pretend.stub(copy_ctx=lambda a: "copiedctx")
+        pretend_backend = pretend.stub(hashes=pretend_hashes)
+        pretend_ctx = pretend.stub()
+        h = hashes.SHA1(backend=pretend_backend, ctx=pretend_ctx)
+        assert h._backend is pretend_backend
+        assert h.copy()._backend is h._backend
+
+
+class TestDefaultBackendSHA1(object):
+    def test_default_backend_creation(self):
+        """
+        This test assumes the presence of SHA1 in the default backend.
+        """
+        h = hashes.SHA1()
+        assert h._backend is _default_backend
+
+
+class TestSHA1(object):
+    test_SHA1 = generate_base_hash_test(
+        hashes.SHA1,
+        digest_size=20,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.SHA1),
+        skip_message="Does not support SHA1",
+    )
+
+
+class TestSHA224(object):
+    test_SHA224 = generate_base_hash_test(
+        hashes.SHA224,
+        digest_size=28,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.SHA224),
+        skip_message="Does not support SHA224",
+    )
+
+
+class TestSHA256(object):
+    test_SHA256 = generate_base_hash_test(
+        hashes.SHA256,
+        digest_size=32,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.SHA256),
+        skip_message="Does not support SHA256",
+    )
+
+
+class TestSHA384(object):
+    test_SHA384 = generate_base_hash_test(
+        hashes.SHA384,
+        digest_size=48,
+        block_size=128,
+        only_if=lambda backend: backend.hashes.supported(hashes.SHA384),
+        skip_message="Does not support SHA384",
+    )
+
+
+class TestSHA512(object):
+    test_SHA512 = generate_base_hash_test(
+        hashes.SHA512,
+        digest_size=64,
+        block_size=128,
+        only_if=lambda backend: backend.hashes.supported(hashes.SHA512),
+        skip_message="Does not support SHA512",
+    )
+
+
+class TestRIPEMD160(object):
+    test_RIPEMD160 = generate_base_hash_test(
+        hashes.RIPEMD160,
+        digest_size=20,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.RIPEMD160),
+        skip_message="Does not support RIPEMD160",
+    )
+
+
+class TestWhirlpool(object):
+    test_Whirlpool = generate_base_hash_test(
+        hashes.Whirlpool,
+        digest_size=64,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.Whirlpool),
+        skip_message="Does not support Whirlpool",
+    )
+
+
+class TestMD5(object):
+    test_MD5 = generate_base_hash_test(
+        hashes.MD5,
+        digest_size=16,
+        block_size=64,
+        only_if=lambda backend: backend.hashes.supported(hashes.MD5),
+        skip_message="Does not support MD5",
+    )