use HTTPStatus instead of direct code

Python introduced http.HTTPStatus since version 3.5,
and Wallaby has targeted a minimum version of python 3.6.

Change-Id: I45f732f0f59b8fae831bb6c07f4fdd98cdd7409a

watcher/tests/common/test_cinder_helper.py

@@ -13,9 +13,11 @@
 # limitations under the License.
 #
 
-import time
 from unittest import mock
 
+from http import HTTPStatus
+import time
+
 from cinderclient import exceptions as cinder_exception
 
 from watcher.common import cinder_helper
@@ -291,7 +293,8 @@ class TestCinderHelper(base.TestCase):
 
         volume = self.fake_volume()
         cinder_util.get_volume = mock.MagicMock()
-        cinder_util.get_volume.side_effect = cinder_exception.NotFound(404)
+        cinder_util.get_volume.side_effect =\
+            cinder_exception.NotFound(HTTPStatus.NOT_FOUND)
         result = cinder_util._can_get_volume(volume.id)
         self.assertFalse(result)
 
@@ -339,7 +342,7 @@ class TestCinderHelper(base.TestCase):
         cinder_util = cinder_helper.CinderHelper()
 
         volume = self.fake_volume()
-        side_effect = cinder_exception.NotFound(404)
+        side_effect = cinder_exception.NotFound(HTTPStatus.NOT_FOUND)
         cinder_util.cinder.volumes.get.side_effect = side_effect
         cinder_util.cinder.volumes.find.return_value = False
         result = cinder_util.get_volume(volume)

watcher/tests/common/test_placement_helper.py

@@ -11,6 +11,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from http import HTTPStatus
 from unittest import mock
 
 from watcher.common import placement_helper
@@ -55,10 +56,10 @@ class TestPlacementHelper(base.TestCase):
         kss_req.assert_called_once_with(url, method, **kwargs)
 
     def test_get(self, kss_req):
-        kss_req.return_value = fake_requests.FakeResponse(200)
+        kss_req.return_value = fake_requests.FakeResponse(HTTPStatus.OK)
         url = '/resource_providers'
         resp = self.client.get(url)
-        self.assertEqual(200, resp.status_code)
+        self.assertEqual(HTTPStatus.OK, resp.status_code)
         self._assert_keystone_called_once(kss_req, url, 'GET')
 
     def test_get_resource_providers_OK(self, kss_req):
@@ -76,7 +77,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_resource_providers(rp_name)
 
@@ -99,7 +100,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_resource_providers(rp_name)
 
@@ -110,7 +111,8 @@ class TestPlacementHelper(base.TestCase):
     def test_get_resource_providers_fail(self, kss_req):
         rp_name = 'compute'
         kss_req.return_value = fake_requests.FakeResponse(
-            400, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.BAD_REQUEST,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_resource_providers(rp_name)
         self.assertIsNone(result)
 
@@ -149,7 +151,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_inventories(rp_uuid)
 
@@ -160,7 +162,8 @@ class TestPlacementHelper(base.TestCase):
     def test_get_inventories_fail(self, kss_req):
         rp_uuid = uuidutils.generate_uuid()
         kss_req.return_value = fake_requests.FakeResponse(
-            404, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.NOT_FOUND,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_inventories(rp_uuid)
         self.assertIsNone(result)
 
@@ -175,7 +178,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_provider_traits(rp_uuid)
 
@@ -186,7 +189,8 @@ class TestPlacementHelper(base.TestCase):
     def test_get_provider_traits_fail(self, kss_req):
         rp_uuid = uuidutils.generate_uuid()
         kss_req.return_value = fake_requests.FakeResponse(
-            404, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.NOT_FOUND,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_provider_traits(rp_uuid)
         self.assertIsNone(result)
 
@@ -216,7 +220,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_allocations_for_consumer(c_uuid)
 
@@ -227,7 +231,8 @@ class TestPlacementHelper(base.TestCase):
     def test_get_allocations_for_consumer_fail(self, kss_req):
         c_uuid = uuidutils.generate_uuid()
         kss_req.return_value = fake_requests.FakeResponse(
-            404, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.NOT_FOUND,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_allocations_for_consumer(c_uuid)
         self.assertIsNone(result)
 
@@ -245,7 +250,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_usages_for_resource_provider(rp_uuid)
 
@@ -256,7 +261,8 @@ class TestPlacementHelper(base.TestCase):
     def test_get_usages_for_resource_provider_fail(self, kss_req):
         rp_uuid = uuidutils.generate_uuid()
         kss_req.return_value = fake_requests.FakeResponse(
-            404, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.NOT_FOUND,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_usages_for_resource_provider(rp_uuid)
         self.assertIsNone(result)
 
@@ -296,7 +302,7 @@ class TestPlacementHelper(base.TestCase):
         }
 
         kss_req.return_value = fake_requests.FakeResponse(
-            200, content=jsonutils.dump_as_bytes(mock_json_data))
+            HTTPStatus.OK, content=jsonutils.dump_as_bytes(mock_json_data))
 
         result = self.client.get_candidate_providers(resources)
 
@@ -307,6 +313,7 @@ class TestPlacementHelper(base.TestCase):
     def test_get_candidate_providers_fail(self, kss_req):
         rp_uuid = uuidutils.generate_uuid()
         kss_req.return_value = fake_requests.FakeResponse(
-            404, content=jsonutils.dump_as_bytes(self.fake_err_msg))
+            HTTPStatus.NOT_FOUND,
+            content=jsonutils.dump_as_bytes(self.fake_err_msg))
         result = self.client.get_candidate_providers(rp_uuid)
         self.assertIsNone(result)