Fixed Unit test for murano-dashboard

After 7052b7f065 merged in openstack/horizon a new Unit
test class introduced in horizon i.e. RestAPITestCase.
This patch updates murano-dashboard to import RestAPITestCase
class instead of TestCase. For more info. see [1]

[1] https://review.opendev.org/c/openstack/horizon/+/827097/2/openstack_dashboard/test/helpers.py#485

Change-Id: I83c5b5a35b63790df1919974cbb4236eefd05b5d

.zuul.yaml

@@ -4,7 +4,6 @@
       - horizon-non-primary-django-jobs
       - horizon-nodejs14-jobs
       - openstack-cover-jobs-horizon
-      - openstack-lower-constraints-jobs
       - openstack-python3-yoga-jobs-horizon
       - release-notes-jobs-python3
     check:

muranodashboard/tests/unit/environments/test_rest_api.py

@@ -28,7 +28,7 @@ PARAM_MAPPING = {
 
 @mock.patch.object(environments, 'api')
 @mock.patch.object(environments, 'env_api')
-class TestComponentsMetadataAPI(helpers.APITestCase):
+class TestComponentsMetadataAPI(helpers.RestAPITestCase):
 
     def setUp(self):
         super(TestComponentsMetadataAPI, self).setUp()
@@ -86,7 +86,7 @@ class TestComponentsMetadataAPI(helpers.APITestCase):
 
 @mock.patch.object(environments, 'api')
 @mock.patch.object(environments, 'env_api')
-class TestEnvironmentsMetadataApi(helpers.APITestCase):
+class TestEnvironmentsMetadataApi(helpers.RestAPITestCase):
 
     def setUp(self):
         super(TestEnvironmentsMetadataApi, self).setUp()

muranodashboard/tests/unit/images/test_views.py

@@ -16,6 +16,7 @@ import json
 import unittest
 from unittest import mock
 
+import horizon
 from horizon import exceptions
 
 from muranodashboard.images import tables
@@ -161,9 +162,12 @@ class TestMarkedImagesView(unittest.TestCase):
 
     @mock.patch.object(views, 'reverse', autospec=True)
     @mock.patch.object(views, 'glance', autospec=True)
-    def test_get_data_except_glance_image_list_exception(self, mock_glance,
+    @mock.patch.object(horizon.messages, 'horizon_message_already_queued')
+    def test_get_data_except_glance_image_list_exception(self, mock_messages,
+                                                         mock_glance,
                                                          mock_reverse):
         """Test that glance_v1_client.images.list exception is handled."""
+        mock_messages.return_value = True
         mock_glance_client = mock.Mock()
         mock_glance_client.images.list.side_effect = Exception()
         mock_glance.glanceclient.return_value = mock_glance_client

muranodashboard/tests/unit/packages/test_views.py

@@ -130,7 +130,7 @@ class TestDetailView(helpers.APITestCase):
             redirect='test_redirect')
 
 
-class TestModifyPackageView(helpers.APITestCase):
+class TestModifyPackageView(helpers.RestAPITestCase):
 
     def setUp(self):
         super(TestModifyPackageView, self).setUp()
@@ -783,7 +783,7 @@ class TestImportPackageWizard(helpers.APITestCase):
                           'package': 'test_package'}, kwargs)
 
 
-class TestImportBundleWizard(helpers.APITestCase):
+class TestImportBundleWizard(helpers.RestAPITestCase):
 
     def setUp(self):
         super(TestImportBundleWizard, self).setUp()