Adjust Actions API tests

* Some more adjustements to the Actions API tests related to
  the Action Provider transition. Some tests have to be temporarily
  disabled because there's no way to make them on both current
  version of Mistral and the version including action providers.

Change-Id: I13033253d5098655a001135c8702d1b1d13e76d4

mistral_tempest_tests/tests/api/v2/test_actions.py

@@ -12,7 +12,6 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-import datetime
 from tempest.lib import decorators
 from tempest.lib import exceptions
 import testtools
@@ -199,14 +198,27 @@ class ActionTestsV2(base.TestCase):
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('20b3d527-447d-492b-8cb7-ac5e3757d7d5')
     def test_get_list_actions_greater_than_filter(self):
-        time = datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
+        resp, body = self.client.create_action('action_v2.yaml')
 
-        resp, body = self.client.get_list_obj(
-            'actions?created_at=gt:' + time.replace(' ', '%20')
-        )
+        self.assertEqual(201, resp.status)
+
+        # NOTE(rakhmerov): The filter "name=gt:freeting" might seem weird
+        # but we can use it because Mistral compare alphabetical order
+        # of action names with filter value.
+        resp, body = self.client.get_list_obj('actions?name=gt:freeting')
 
         self.assertEqual(200, resp.status)
-        self.assertEmpty(body['actions'])
+
+        # There should be at least "greeting" action in the result set
+        # and possible some other standard actions whose names go after
+        # "freeting" in the alphabet order.
+        self.assertGreater(len(body['actions']), 0)
+
+        # Make sure the "greeting" action is in the result set.
+        self.assertEqual(
+            1,
+            len([act for act in body['actions'] if act['name'] == 'greeting'])
+        )
 
     # TODO(rakhmerov): Come up with a good test, we can't use 'created_at'
     # anymore.
@@ -290,8 +302,13 @@ class ActionTestsV2(base.TestCase):
 
         self.assertEqual(201, resp.status)
 
+        # TODO(rakhmerov): Both filters are temporarily related to the
+        # field 'name', there's no other suitable field right now to
+        # to apply a filter to. We could use "&tags=has:hello", for
+        # example, but it will work only after the Action Provider
+        # transition is completed, now this filter is broken.
         resp, body = self.client.get_list_obj(
-            'actions?name=in:greeting,farewell&input=name'
+            'actions?name=in:greeting,farewell&name=greeting'
         )
 
         self.assertEqual(200, resp.status)
@@ -421,7 +438,8 @@ class ActionTestsV2(base.TestCase):
         self.assertRaises(
             exceptions.BadRequest,
             self.client.update_request,
-            'actions', 'wb_v2.yaml'
+            'actions',
+            'wb_v2.yaml'
         )
 
     @decorators.attr(type='negative')
@@ -430,9 +448,13 @@ class ActionTestsV2(base.TestCase):
         self.assertRaises(
             exceptions.NotFound,
             self.client.delete_obj,
-            'actions', 'nonexist'
+            'actions',
+            'nonexist'
         )
 
+    # TODO(rakhmerov): Rewrite it after https://review.opendev.org/#/c/746022/
+    # is merged.
+    @testtools.skip('Needs to be rewritten.')
     @decorators.attr(type='negative')
     @decorators.idempotent_id('74d0d480-793a-46ca-b88a-8336c1897f3a')
     def test_delete_standard_action(self):