add unit tests for healthcheck

Change-Id: Id641d38eab24ea45d182acd46fd57a7c3c371db7

keystone/tests/unit/test_healthcheck.py

@@ -0,0 +1,25 @@
+#
+# 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 six.moves import http_client
+
+from keystone.tests.unit import rest
+
+
+class HealthCheckTestCase(rest.RestfulTestCase):
+    def test_get_healthcheck(self):
+        with self.test_client() as c:
+            resp = c.get('/healthcheck', expected_status_code=http_client.OK)
+            # healthcheck is not supposed to return any data
+            self.assertEqual(0, resp.content_length)