1 files changed, 113 insertions, 0 deletions
diff --git a/tests/hazmat/primitives/test_dh.py b/tests/hazmat/primitives/test_dh.py
new file mode 100644
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+++ b/tests/hazmat/primitives/test_dh.py
@@ -0,0 +1,113 @@
+# 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 pytest
+
+from cryptography.hazmat.primitives.asymmetric import dh
+
+
+def test_dh_parameternumbers():
+    params = dh.DHParameterNumbers(
+        65537, 3
+    )
+
+    assert params.p == 65537
+    assert params.g == 3
+
+    with pytest.raises(TypeError):
+        dh.DHParameterNumbers(
+            None, 3
+        )
+
+    with pytest.raises(TypeError):
+        dh.DHParameterNumbers(
+            65537, None
+        )
+
+    with pytest.raises(TypeError):
+        dh.DHParameterNumbers(
+            None, None
+        )
+
+
+def test_dh_numbers():
+    params = dh.DHParameterNumbers(
+        65537, 3
+    )
+
+    public = dh.DHPublicNumbers(
+        1, params
+    )
+
+    assert public.parameter_numbers is params
+    assert public.y == 1
+
+    with pytest.raises(TypeError):
+        dh.DHPublicNumbers(
+            1, None
+        )
+
+    with pytest.raises(TypeError):
+        dh.DHPublicNumbers(
+            None, params
+        )
+
+    private = dh.DHPrivateNumbers(
+        1, public
+    )
+
+    assert private.public_numbers is public
+    assert private.x == 1
+
+    with pytest.raises(TypeError):
+        dh.DHPrivateNumbers(
+            1, None
+        )
+
+    with pytest.raises(TypeError):
+        dh.DHPrivateNumbers(
+            None, public
+        )
+
+
+def test_dh_parameter_numbers_equality():
+    assert dh.DHParameterNumbers(65537, 3) == dh.DHParameterNumbers(65537, 3)
+    assert dh.DHParameterNumbers(6, 3) != dh.DHParameterNumbers(65537, 3)
+    assert dh.DHParameterNumbers(65537, 0) != dh.DHParameterNumbers(65537, 3)
+    assert dh.DHParameterNumbers(65537, 0) != object()
+
+
+def test_dh_private_numbers_equality():
+    params = dh.DHParameterNumbers(65537, 3)
+    public = dh.DHPublicNumbers(1, params)
+    private = dh.DHPrivateNumbers(2, public)
+
+    assert private == dh.DHPrivateNumbers(2, public)
+    assert private != dh.DHPrivateNumbers(0, public)
+    assert private != dh.DHPrivateNumbers(2, dh.DHPublicNumbers(0, params))
+    assert private != dh.DHPrivateNumbers(
+        2, dh.DHPublicNumbers(1, dh.DHParameterNumbers(65537, 0))
+    )
+    assert private != object()
+
+
+def test_dh_public_numbers_equality():
+    params = dh.DHParameterNumbers(65537, 3)
+    public = dh.DHPublicNumbers(1, params)
+
+    assert public == dh.DHPublicNumbers(1, params)
+    assert public != dh.DHPublicNumbers(0, params)
+    assert public != dh.DHPublicNumbers(1, dh.DHParameterNumbers(65537, 0))
+    assert public != object()