1 files changed, 7 insertions, 0 deletions
diff --git a/tests/hazmat/backends/test_openssl.py b/tests/hazmat/backends/test_openssl.py
index 85331595..3ccc54c8 100644
--- a/tests/hazmat/backends/test_openssl.py
+++ b/tests/hazmat/backends/test_openssl.py
@@ -557,6 +557,13 @@ class TestOpenSSLEllipticCurve(object):
             ec.ECDH(), ec.SECP256R1()
         )
 
+    def test_elliptic_curve_exchange_unsupported_algorithm(self):
+        key = ec.generate_private_key(ec.SECP256R1(), backend=backend)
+        with raises_unsupported_algorithm(
+            _Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM
+        ):
+            key.exchange(None, key.public_key())
+
 
 @pytest.mark.requires_backend_interface(interface=RSABackend)
 class TestRSAPEMSerialization(object):