Add unit tests for migrations_client

This patch adds unit tests for migrations_client.

Change-Id: I9bb9556d9c9b821c55c97f57dd783c00e5a05e04
diff --git a/tempest/tests/services/compute/test_migrations_client.py b/tempest/tests/services/compute/test_migrations_client.py
new file mode 100644
index 0000000..83fe461
--- /dev/null
+++ b/tempest/tests/services/compute/test_migrations_client.py
@@ -0,0 +1,52 @@
+# 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.
+
+from tempest.services.compute.json import migrations_client
+from tempest.tests import fake_auth_provider
+from tempest.tests.services.compute import base
+
+
+class TestMigrationsClient(base.BaseComputeServiceTest):
+    FAKE_MIGRATION_INFO = {"migrations": [{
+        "created_at": "2012-10-29T13:42:02",
+        "dest_compute": "compute2",
+        "dest_host": "1.2.3.4",
+        "dest_node": "node2",
+        "id": 1234,
+        "instance_uuid": "e9e4fdd7-f956-44ff-bfeb-d654a96ab3a2",
+        "new_instance_type_id": 2,
+        "old_instance_type_id": 1,
+        "source_compute": "compute1",
+        "source_node": "node1",
+        "status": "finished",
+        "updated_at": "2012-10-29T13:42:02"}]}
+
+    def setUp(self):
+        super(TestMigrationsClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.mg_client_obj = migrations_client.MigrationsClient(
+            fake_auth, 'compute', 'regionOne')
+
+    def _test_list_migrations(self, bytes_body=False):
+        self.check_service_client_function(
+            self.mg_client_obj.list_migrations,
+            'tempest.common.service_client.ServiceClient.get',
+            self.FAKE_MIGRATION_INFO,
+            bytes_body)
+
+    def test_list_migration_with_str_body(self):
+        self._test_list_migrations()
+
+    def test_list_migration_with_bytes_body(self):
+        self._test_list_migrations(True)