diff --git a/tempest/tests/services/compute/test_certificates_client.py b/tempest/tests/services/compute/test_certificates_client.py
new file mode 100644
index 0000000..51c3e85
--- /dev/null
+++ b/tempest/tests/services/compute/test_certificates_client.py
@@ -0,0 +1,77 @@
+# Copyright 2015 NEC Corporation.  All rights reserved.
+#
+#    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 copy
+import httplib2
+
+from oslo_serialization import jsonutils as json
+from oslotest import mockpatch
+
+from tempest.services.compute.json import certificates_client
+from tempest.tests import base
+from tempest.tests import fake_auth_provider
+
+
+class TestCertificatesClient(base.TestCase):
+
+    FAKE_CERTIFICATE = {
+        "certificate": {
+            "data": "-----BEGIN----MIICyzCCAjSgAwI----END CERTIFICATE-----\n",
+            "private_key": None
+        }
+    }
+
+    def setUp(self):
+        super(TestCertificatesClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = certificates_client.CertificatesClient(
+            fake_auth, 'compute', 'regionOne')
+
+    def _test_show_certificate(self, bytes_body=False):
+        serialized_body = json.dumps(self.FAKE_CERTIFICATE)
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.get',
+            return_value=mocked_resp))
+        resp = self.client.show_certificate("fake-id")
+        self.assertEqual(self.FAKE_CERTIFICATE, resp)
+
+    def test_show_certificate_with_str_body(self):
+        self._test_show_certificate()
+
+    def test_show_certificate_with_bytes_body(self):
+        self._test_show_certificate(bytes_body=True)
+
+    def _test_create_certificate(self, bytes_body=False):
+        cert = copy.deepcopy(self.FAKE_CERTIFICATE)
+        cert['certificate']['private_key'] = "my_private_key"
+        serialized_body = json.dumps(cert)
+        if bytes_body:
+            serialized_body = serialized_body.encode('utf-8')
+
+        mocked_resp = (httplib2.Response({'status': 200}), serialized_body)
+        self.useFixture(mockpatch.Patch(
+            'tempest.common.service_client.ServiceClient.post',
+            return_value=mocked_resp))
+        resp = self.client.create_certificate()
+        self.assertEqual(cert, resp)
+
+    def test_create_certificate_with_str_body(self):
+        self._test_create_certificate()
+
+    def test_create_certificate_with_bytes_body(self):
+        self._test_create_certificate(bytes_body=True)