Add basic api wsgi tests

Change-Id: I91b2c2e4bcb83aea74dc531b0dc4b95842e6b4a0

designate/tests/unit/api/test_wsgi.py

@@ -0,0 +1,74 @@
+# 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 oslo_config import cfg
+from oslo_config import fixture as cfg_fixture
+import oslotest.base
+from unittest import mock
+
+from designate.api import wsgi
+
+
+CONF = cfg.CONF
+
+
+class TestApiWsgi(oslotest.base.BaseTestCase):
+    def setUp(self):
+        super(TestApiWsgi, self).setUp()
+        self.useFixture(cfg_fixture.Config(CONF))
+
+    @mock.patch('paste.deploy.loadapp')
+    @mock.patch('designate.heartbeat_emitter.get_heartbeat_emitter')
+    @mock.patch('designate.common.profiler.setup_profiler')
+    @mock.patch('designate.rpc.init')
+    @mock.patch('designate.rpc.initialized')
+    @mock.patch('designate.policy.init')
+    @mock.patch('oslo_log.log.setup')
+    @mock.patch('oslo_config.cfg.CONF')
+    def test_init_application(self, mock_cfg, mock_log_setup, mock_policy_init,
+                              mock_rpc_initialized,
+                              mock_rpc_init,
+                              mock_setup_profiler,
+                              mock_get_heartbeat_emitter,
+                              mock_loadapp):
+        CONF.set_override('host', 'foo')
+        mock_rpc_initialized.return_value = False
+
+        wsgi.init_application()
+
+        mock_cfg.assert_called_with(
+            [], project='designate',
+            default_config_files=['/etc/designate/api-paste.ini',
+                                  '/etc/designate/designate.conf']
+        )
+        mock_log_setup.assert_called_with(mock.ANY, 'designate')
+        mock_policy_init.assert_called()
+        mock_rpc_init.assert_called()
+        mock_setup_profiler.assert_called_with('designate-api', 'foo')
+        mock_get_heartbeat_emitter.assert_called_with('api')
+        mock_loadapp.assert_called_with(
+            'config:/etc/designate/api-paste.ini', name='osapi_dns'
+        )
+
+    def test_get_config_files(self):
+        self.assertEqual(
+            ['/etc/designate/api-paste.ini', '/etc/designate/designate.conf'],
+            wsgi._get_config_files()
+        )
+
+    def test_get_config_files_with_custom_env(self):
+        env = {'OS_DESIGNATE_CONFIG_DIR': '/opt/designate'}
+
+        self.assertEqual(
+            ['/opt/designate/api-paste.ini', '/opt/designate/designate.conf'],
+            wsgi._get_config_files(env)
+        )