Make the checks of identity status code strict

Some identity API tests check response status codes like:

 self.assertTrue(resp['status'].startswith('2'))

This way cannot detect the status code changes and that means
Tempest cannot block the backward incompatibility changes for
Keystone.

This patch makes these checks strict by specifying particular
status codes.

Closes-Bug: #1293982

Change-Id: Icab5ff57aaa06e313da209f87ced4c2135ab5343
diff --git a/tempest/api/identity/admin/test_roles.py b/tempest/api/identity/admin/test_roles.py
index 5e78cce..78057b4 100644
--- a/tempest/api/identity/admin/test_roles.py
+++ b/tempest/api/identity/admin/test_roles.py
@@ -59,8 +59,7 @@
         # Role should be created, verified, and deleted
         role_name = data_utils.rand_name(name='role-test-')
         resp, body = self.client.create_role(role_name)
-        self.assertIn('status', resp)
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertEqual(role_name, body['name'])
 
         resp, body = self.client.list_roles()
@@ -68,8 +67,7 @@
         self.assertTrue(any(found))
 
         resp, body = self.client.delete_role(found[0]['id'])
-        self.assertIn('status', resp)
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(204, resp.status)
 
         resp, body = self.client.list_roles()
         found = [role for role in body if role['name'] == role_name]
@@ -91,7 +89,7 @@
                                                        user['id'], role['id'])
         resp, body = self.client.remove_user_role(tenant['id'], user['id'],
                                                   user_role['id'])
-        self.assertEqual(resp['status'], '204')
+        self.assertEqual(204, resp.status)
 
     @attr(type='gate')
     def test_list_user_roles(self):
diff --git a/tempest/api/identity/admin/test_roles_negative.py b/tempest/api/identity/admin/test_roles_negative.py
index 7a0bdea..d311143 100644
--- a/tempest/api/identity/admin/test_roles_negative.py
+++ b/tempest/api/identity/admin/test_roles_negative.py
@@ -74,8 +74,7 @@
         role_name = data_utils.rand_name(name='role-dup-')
         resp, body = self.client.create_role(role_name)
         role1_id = body.get('id')
-        self.assertIn('status', resp)
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         self.addCleanup(self.client.delete_role, role1_id)
         self.assertRaises(exceptions.Conflict, self.client.create_role,
                           role_name)
diff --git a/tempest/api/identity/admin/test_services.py b/tempest/api/identity/admin/test_services.py
index 459c44c..3b70fc0 100644
--- a/tempest/api/identity/admin/test_services.py
+++ b/tempest/api/identity/admin/test_services.py
@@ -27,7 +27,7 @@
     def _del_service(self, service_id):
         # Deleting the service created in this method
         resp, _ = self.client.delete_service(service_id)
-        self.assertEqual(resp['status'], '204')
+        self.assertEqual(204, resp.status)
         # Checking whether service is deleted successfully
         self.assertRaises(exceptions.NotFound, self.client.get_service,
                           service_id)
@@ -43,7 +43,7 @@
             name, type, description=description)
         self.assertFalse(service_data['id'] is None)
         self.addCleanup(self._del_service, service_data['id'])
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         # Verifying response body of create service
         self.assertIn('id', service_data)
         self.assertIn('name', service_data)
@@ -54,7 +54,7 @@
         self.assertEqual(description, service_data['description'])
         # Get service
         resp, fetched_service = self.client.get_service(service_data['id'])
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         # verifying the existence of service created
         self.assertIn('id', fetched_service)
         self.assertEqual(fetched_service['id'], service_data['id'])
@@ -86,7 +86,7 @@
         self.addCleanup(delete_services)
         # List and Verify Services
         resp, body = self.client.list_services()
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         found = [service for service in body if service['id'] in service_ids]
         self.assertEqual(len(found), len(services), 'Services not found')
 
diff --git a/tempest/api/identity/admin/test_tenants.py b/tempest/api/identity/admin/test_tenants.py
index 257a6d7..7ba46bb 100644
--- a/tempest/api/identity/admin/test_tenants.py
+++ b/tempest/api/identity/admin/test_tenants.py
@@ -35,13 +35,13 @@
             tenants.append(tenant)
         tenant_ids = map(lambda x: x['id'], tenants)
         resp, body = self.client.list_tenants()
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(200, resp.status)
         found = [tenant for tenant in body if tenant['id'] in tenant_ids]
         self.assertEqual(len(found), len(tenants), 'Tenants not created')
 
         for tenant in tenants:
             resp, body = self.client.delete_tenant(tenant['id'])
-            self.assertTrue(resp['status'].startswith('2'))
+            self.assertEqual(204, resp.status)
             self.data.tenants.remove(tenant)
 
         resp, body = self.client.list_tenants()
@@ -57,10 +57,9 @@
                                                description=tenant_desc)
         tenant = body
         self.data.tenants.append(tenant)
-        st1 = resp['status']
         tenant_id = body['id']
         desc1 = body['description']
-        self.assertTrue(st1.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertEqual(desc1, tenant_desc, 'Description should have '
                          'been sent in response for create')
         resp, body = self.client.get_tenant(tenant_id)
@@ -78,9 +77,8 @@
         tenant = body
         self.data.tenants.append(tenant)
         tenant_id = body['id']
-        st1 = resp['status']
         en1 = body['enabled']
-        self.assertTrue(st1.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertTrue(en1, 'Enable should be True in response')
         resp, body = self.client.get_tenant(tenant_id)
         en2 = body['enabled']
@@ -96,9 +94,8 @@
         tenant = body
         self.data.tenants.append(tenant)
         tenant_id = body['id']
-        st1 = resp['status']
         en1 = body['enabled']
-        self.assertTrue(st1.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertEqual('false', str(en1).lower(),
                          'Enable should be False in response')
         resp, body = self.client.get_tenant(tenant_id)
@@ -122,9 +119,8 @@
 
         t_name2 = data_utils.rand_name(name='tenant2-')
         resp, body = self.client.update_tenant(t_id, name=t_name2)
-        st2 = resp['status']
         resp2_name = body['name']
-        self.assertTrue(st2.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertNotEqual(resp1_name, resp2_name)
 
         resp, body = self.client.get_tenant(t_id)
@@ -152,9 +148,8 @@
 
         t_desc2 = data_utils.rand_name(name='desc2-')
         resp, body = self.client.update_tenant(t_id, description=t_desc2)
-        st2 = resp['status']
         resp2_desc = body['description']
-        self.assertTrue(st2.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertNotEqual(resp1_desc, resp2_desc)
 
         resp, body = self.client.get_tenant(t_id)
@@ -182,9 +177,8 @@
 
         t_en2 = True
         resp, body = self.client.update_tenant(t_id, enabled=t_en2)
-        st2 = resp['status']
         resp2_en = body['enabled']
-        self.assertTrue(st2.startswith('2'))
+        self.assertEqual(200, resp.status)
         self.assertNotEqual(resp1_en, resp2_en)
 
         resp, body = self.client.get_tenant(t_id)
diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index 9629213..73e0c0f 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -33,15 +33,15 @@
         resp, user = self.client.create_user(
             u_name, description=u_desc, password=u_password,
             email=u_email)
-        self.assertTrue(resp['status'].startswith('2'))
+        self.assertEqual(201, resp.status)
         self.addCleanup(self.client.delete_user, user['id'])
         # Perform Authentication
         resp, body = self.token.auth(user['id'], u_password)
-        self.assertEqual(resp['status'], '201')
+        self.assertEqual(201, resp.status)
         subject_token = resp['x-subject-token']
         # Perform GET Token
         resp, token_details = self.client.get_token(subject_token)
-        self.assertEqual(resp['status'], '200')
+        self.assertEqual(200, resp.status)
         self.assertEqual(resp['x-subject-token'], subject_token)
         self.assertEqual(token_details['user']['id'], user['id'])
         self.assertEqual(token_details['user']['name'], u_name)