HasLength() rewritten to assertEqual()

HasLength() based assertions are re-written to assertEqual() based
assertion to homogenize the test code base.

For example:

assertThat(.., HasLength()) becomes assertEqual(len(),...)

Change-Id: Ia3bf24e34fffe445ff4b0ee61fb7cbc0eb36a57a
Closes-Bug:#1629898

watcher/tests/objects/test_action.py

@@ -14,8 +14,6 @@
 #    under the License.
 
 import mock
-from testtools import matchers
-
 from watcher.common import exception
 # from watcher.common import utils as w_utils
 from watcher import objects
@@ -58,7 +56,7 @@ class TestActionObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_action]
             actions = objects.Action.list(self.context)
             self.assertEqual(1, mock_get_list.call_count)
-            self.assertThat(actions, matchers.HasLength(1))
+            self.assertEqual(1, len(actions))
             self.assertIsInstance(actions[0], objects.Action)
             self.assertEqual(self.context, actions[0]._context)
 

watcher/tests/objects/test_action_plan.py

@@ -14,8 +14,6 @@
 #    under the License.
 
 import mock
-from testtools import matchers
-
 from watcher.common import exception
 # from watcher.common import utils as w_utils
 from watcher import objects
@@ -58,7 +56,7 @@ class TestActionPlanObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_action_plan]
             action_plans = objects.ActionPlan.list(self.context)
             self.assertEqual(1, mock_get_list.call_count)
-            self.assertThat(action_plans, matchers.HasLength(1))
+            self.assertEqual(1, len(action_plans))
             self.assertIsInstance(action_plans[0], objects.ActionPlan)
             self.assertEqual(self.context, action_plans[0]._context)
 

watcher/tests/objects/test_audit.py

@@ -14,8 +14,6 @@
 #    under the License.
 
 import mock
-from testtools import matchers
-
 from watcher.common import exception
 # from watcher.common import utils as w_utils
 from watcher import objects
@@ -58,7 +56,7 @@ class TestAuditObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_audit]
             audits = objects.Audit.list(self.context)
             self.assertEqual(1, mock_get_list.call_count, 1)
-            self.assertThat(audits, matchers.HasLength(1))
+            self.assertEqual(1, len(audits))
             self.assertIsInstance(audits[0], objects.Audit)
             self.assertEqual(self.context, audits[0]._context)
 

watcher/tests/objects/test_efficacy_indicator.py

@@ -14,8 +14,6 @@
 #    under the License.
 
 import mock
-from testtools import matchers
-
 from watcher.common import exception
 # from watcher.common import utils as w_utils
 from watcher import objects
@@ -64,7 +62,7 @@ class TestEfficacyIndicatorObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_efficacy_indicator]
             efficacy_indicators = objects.EfficacyIndicator.list(self.context)
             self.assertEqual(1, mock_get_list.call_count)
-            self.assertThat(efficacy_indicators, matchers.HasLength(1))
+            self.assertEqual(1, len(efficacy_indicators))
             self.assertIsInstance(
                 efficacy_indicators[0], objects.EfficacyIndicator)
             self.assertEqual(self.context, efficacy_indicators[0]._context)

watcher/tests/objects/test_scoring_engine.py

@@ -14,8 +14,6 @@
 #    under the License.
 
 import mock
-from testtools import matchers
-
 from watcher import objects
 from watcher.tests.db import base
 from watcher.tests.db import utils
@@ -66,7 +64,7 @@ class TestScoringEngineObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_scoring_engine]
             scoring_engines = objects.ScoringEngine.list(self.context)
             self.assertEqual(1, mock_get_list.call_count, 1)
-            self.assertThat(scoring_engines, matchers.HasLength(1))
+            self.assertEqual(1, len(scoring_engines))
             self.assertIsInstance(scoring_engines[0], objects.ScoringEngine)
             self.assertEqual(self.context, scoring_engines[0]._context)
 

watcher/tests/objects/test_strategy.py

@@ -15,8 +15,6 @@
 
 
 import mock
-from testtools import matchers
-
 from watcher.common import exception
 from watcher import objects
 from watcher.tests.db import base
@@ -58,7 +56,7 @@ class TestStrategyObject(base.DbTestCase):
             mock_get_list.return_value = [self.fake_strategy]
             strategies = objects.Strategy.list(self.context)
             self.assertEqual(1, mock_get_list.call_count, 1)
-            self.assertThat(strategies, matchers.HasLength(1))
+            self.assertEqual(1, len(strategies))
             self.assertIsInstance(strategies[0], objects.Strategy)
             self.assertEqual(self.context, strategies[0]._context)