Adds /os-hosts api tests using gabbi

This patch adds /os-host api tests using gabbi. Tests for /leases
api will be added in a following patch.

Depends-On: https://review.openstack.org/581939
Depends-On: https://review.openstack.org/580538
Change-Id: Ic8dc7b1942f312d6dcbe5f2ad6a73289eaf7c838

blazar_tempest_plugin/tests/api/fixtures.py

@@ -0,0 +1,30 @@
+#
+# 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 os
+
+from gabbi import fixture
+from tempest import clients as tempestclients
+from tempest import test
+
+
+class AuthenticationFixture(fixture.GabbiFixture, test.BaseTestCase):
+    def start_fixture(self):
+        cred_provider = self._get_credentials_provider()
+        creds = cred_provider.get_credentials('admin')
+        auth_prov = tempestclients.get_auth_provider(creds._credentials)
+
+        os.environ['OS_TOKEN'] = auth_prov.get_token()
+
+    def stop_fixture(self):
+        pass

blazar_tempest_plugin/tests/api/gabbits/hosts.yaml

@@ -0,0 +1,33 @@
+fixtures:
+    - AuthenticationFixture
+
+defaults:
+  request_headers:
+    accept: application/json
+    content-type: application/json
+    X-Auth-Token: $ENVIRON['OS_TOKEN']
+
+tests:
+- name: get host name
+  GET: compute/v2.1/os-hypervisors
+  status: 200
+
+- name: post new host
+  POST: reservation/v1/os-hosts
+  data:
+      name: $HISTORY['get host name'].$RESPONSE['$.hypervisors[0].hypervisor_hostname']
+  status: 201
+
+- name: get new host
+  GET: reservation/v1/os-hosts
+  response_json_paths:
+     $.hosts.`len`: 1
+
+- name: delete new host
+  DELETE: reservation/v1/os-hosts/$HISTORY['get new host'].$RESPONSE['$.hosts[0].id']
+  status: 204
+
+- name: get no host
+  GET: reservation/v1/os-hosts
+  response_json_paths:
+     $.hosts.`len`: 0

blazar_tempest_plugin/tests/api/test_blazar_api.py

@@ -0,0 +1,30 @@
+#
+# 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.
+
+"""A test module to exercise the Blazar API with gabbi."""
+
+import os
+
+from blazar_tempest_plugin.tests.api import fixtures
+from gabbi import driver
+
+TESTS_DIR = 'gabbits'
+
+
+def load_tests(loader, tests, pattern):
+    """Provide a TestSuite to the discovery process."""
+    test_dir = os.path.join(os.path.dirname(__file__), TESTS_DIR)
+    return driver.build_tests(test_dir, loader,
+                              test_loader_name=__name__,
+                              fixture_module=fixtures,
+                              url='http://127.0.0.1/')

doc/source/usage.rst

@@ -0,0 +1,19 @@
+=====
+Usage
+=====
+
+The api tests are defined in .yaml files and should be executed
+in the order in the file. To do this, set ``group_regex`` parameter
+in ``.stestr.conf``::
+
+    group_regex=blazar_tempest_plugin\.tests\.api\.test_blazar_api
+
+or, you can also save the test order by setting the number of test
+workers to one via tempest run options::
+
+    $ tempest run --regex blazar_tempest_plugin --serial
+
+or::
+
+    $ tempest run --regex blazar_tempest_plugin --concurrency=1
+

requirements.txt

@@ -8,3 +8,4 @@ oslo.config>=5.2.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
 oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
 tempest>=17.1.0 # Apache-2.0
+gabbi>=1.42.1 # Apache-2.0