1 files changed, 41 insertions, 0 deletions
diff --git a/tests/hazmat/bindings/test_openssl.py b/tests/hazmat/bindings/test_openssl.py
new file mode 100644
index 00000000..9ce882e4
--- /dev/null
+++ b/tests/hazmat/bindings/test_openssl.py
@@ -0,0 +1,41 @@
+# 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.
+
+import pytest
+
+from cryptography.hazmat.bindings.openssl.backend import backend
+from cryptography.hazmat.primitives.block.ciphers import AES
+from cryptography.hazmat.primitives.block.modes import CBC
+
+
+class TestOpenSSL(object):
+    def test_backend_exists(self):
+        assert backend
+
+    def test_openssl_version_text(self):
+        """
+        This test checks the value of OPENSSL_VERSION_TEXT.
+
+        Unfortunately, this define does not appear to have a
+        formal content definition, so for now we'll test to see
+        if it starts with OpenSSL as that appears to be true
+        for every OpenSSL.
+        """
+        assert backend.openssl_version_text().startswith("OpenSSL")
+
+    def test_supports_cipher(self):
+        assert backend.ciphers.supported(None, None) is False
+
+    def test_register_duplicate_cipher_adapter(self):
+        with pytest.raises(ValueError):
+            backend.ciphers.register_cipher_adapter(AES, CBC, None)