Replace CONST.* by getattribute/setattr for rally and tempest

Directories affected:
 - functest/opnfv_tests/openstack/rally
 - functest/opnfv_tests/openstack/tempest
and respective unit test

JIRA: FUNCTEST-796

Change-Id: I963f5947663f0b660337f3304defb697f5d338f3
Signed-off-by: Linda Wang <wangwulin@huawei.com>

6 files changed, 129 insertions, 113 deletions

diff --git a/functest/opnfv_tests/openstack/rally/rally.py b/functest/opnfv_tests/openstack/rally/rally.py
index 40f8386c..86ec3558 100644
--- a/functest/opnfv_tests/openstack/rally/rally.py
+++ b/functest/opnfv_tests/openstack/rally/rally.py
@@ -30,14 +30,17 @@ logger = logging.getLogger(__name__)
 class RallyBase(testcase.TestCase):
     TESTS = ['authenticate', 'glance', 'cinder', 'heat', 'keystone',
              'neutron', 'nova', 'quotas', 'requests', 'vm', 'all']
-    GLANCE_IMAGE_NAME = CONST.openstack_image_name
-    GLANCE_IMAGE_FILENAME = CONST.openstack_image_file_name
-    GLANCE_IMAGE_PATH = os.path.join(CONST.dir_functest_images,
-                                     GLANCE_IMAGE_FILENAME)
-    GLANCE_IMAGE_FORMAT = CONST.openstack_image_disk_format
+    GLANCE_IMAGE_NAME = CONST.__getattribute__('openstack_image_name')
+    GLANCE_IMAGE_FILENAME = CONST.__getattribute__('openstack_image_file_name')
+    GLANCE_IMAGE_PATH = os.path.join(
+        CONST.__getattribute__('dir_functest_images'),
+        GLANCE_IMAGE_FILENAME)
+    GLANCE_IMAGE_FORMAT = CONST.__getattribute__('openstack_image_disk_format')
     FLAVOR_NAME = "m1.tiny"
 
-    RALLY_DIR = os.path.join(CONST.dir_repo_functest, CONST.dir_rally)
+    RALLY_DIR = os.path.join(
+        CONST.__getattribute__('dir_repo_functest'),
+        CONST.__getattribute__('dir_rally'))
     RALLY_SCENARIO_DIR = os.path.join(RALLY_DIR, "scenario")
     TEMPLATE_DIR = os.path.join(RALLY_SCENARIO_DIR, "templates")
     SUPPORT_DIR = os.path.join(RALLY_SCENARIO_DIR, "support")
@@ -45,17 +48,17 @@ class RallyBase(testcase.TestCase):
     TENANTS_AMOUNT = 3
     ITERATIONS_AMOUNT = 10
     CONCURRENCY = 4
-    RESULTS_DIR = os.path.join(CONST.dir_results, 'rally')
-    TEMPEST_CONF_FILE = os.path.join(CONST.dir_results,
+    RESULTS_DIR = os.path.join(CONST.__getattribute__('dir_results'), 'rally')
+    TEMPEST_CONF_FILE = os.path.join(CONST.__getattribute__('dir_results'),
                                      'tempest/tempest.conf')
     BLACKLIST_FILE = os.path.join(RALLY_DIR, "blacklist.txt")
     TEMP_DIR = os.path.join(RALLY_DIR, "var")
 
     CINDER_VOLUME_TYPE_NAME = "volume_test"
-    RALLY_PRIVATE_NET_NAME = CONST.rally_network_name
-    RALLY_PRIVATE_SUBNET_NAME = CONST.rally_subnet_name
-    RALLY_PRIVATE_SUBNET_CIDR = CONST.rally_subnet_cidr
-    RALLY_ROUTER_NAME = CONST.rally_router_name
+    RALLY_PRIVATE_NET_NAME = CONST.__getattribute__('rally_network_name')
+    RALLY_PRIVATE_SUBNET_NAME = CONST.__getattribute__('rally_subnet_name')
+    RALLY_PRIVATE_SUBNET_CIDR = CONST.__getattribute__('rally_subnet_cidr')
+    RALLY_ROUTER_NAME = CONST.__getattribute__('rally_router_name')
 
     def __init__(self, **kwargs):
         super(RallyBase, self).__init__(**kwargs)
@@ -97,7 +100,7 @@ class RallyBase(testcase.TestCase):
             task_args['netid'] = ''
 
         # get keystone auth endpoint
-        task_args['request_url'] = CONST.OS_AUTH_URL or ''
+        task_args['request_url'] = CONST.__getattribute__('OS_AUTH_URL') or ''
 
         return task_args
 
@@ -183,8 +186,8 @@ class RallyBase(testcase.TestCase):
             with open(RallyBase.BLACKLIST_FILE, 'r') as black_list_file:
                 black_list_yaml = yaml.safe_load(black_list_file)
 
-            installer_type = CONST.INSTALLER_TYPE
-            deploy_scenario = CONST.DEPLOY_SCENARIO
+            installer_type = CONST.__getattribute__('INSTALLER_TYPE')
+            deploy_scenario = CONST.__getattribute__('DEPLOY_SCENARIO')
             if (bool(installer_type) * bool(deploy_scenario)):
                 if 'scenario' in black_list_yaml.keys():
                     for item in black_list_yaml['scenario']:
diff --git a/functest/opnfv_tests/openstack/tempest/conf_utils.py b/functest/opnfv_tests/openstack/tempest/conf_utils.py
index cd6a2a8c..556a41d4 100644
--- a/functest/opnfv_tests/openstack/tempest/conf_utils.py
+++ b/functest/opnfv_tests/openstack/tempest/conf_utils.py
@@ -21,11 +21,12 @@ import functest.utils.openstack_utils as os_utils
 
 IMAGE_ID_ALT = None
 FLAVOR_ID_ALT = None
-REPO_PATH = CONST.dir_repo_functest
-GLANCE_IMAGE_PATH = os.path.join(CONST.dir_functest_images,
-                                 CONST.openstack_image_file_name)
-TEMPEST_TEST_LIST_DIR = CONST.dir_tempest_cases
-TEMPEST_RESULTS_DIR = os.path.join(CONST.dir_results,
+REPO_PATH = CONST.__getattribute__('dir_repo_functest')
+GLANCE_IMAGE_PATH = os.path.join(
+    CONST.__getattribute__('dir_functest_images'),
+    CONST.__getattribute__('openstack_image_file_name'))
+TEMPEST_TEST_LIST_DIR = CONST.__getattribute__('dir_tempest_cases')
+TEMPEST_RESULTS_DIR = os.path.join(CONST.__getattribute__('dir_results'),
                                    'tempest')
 TEMPEST_CUSTOM = os.path.join(REPO_PATH, TEMPEST_TEST_LIST_DIR,
                               'test_list.txt')
@@ -35,11 +36,11 @@ TEMPEST_DEFCORE = os.path.join(REPO_PATH, TEMPEST_TEST_LIST_DIR,
                                'defcore_req.txt')
 TEMPEST_RAW_LIST = os.path.join(TEMPEST_RESULTS_DIR, 'test_raw_list.txt')
 TEMPEST_LIST = os.path.join(TEMPEST_RESULTS_DIR, 'test_list.txt')
-REFSTACK_RESULTS_DIR = os.path.join(CONST.dir_results,
+REFSTACK_RESULTS_DIR = os.path.join(CONST.__getattribute__('dir_results'),
                                     'refstack')
 
-CI_INSTALLER_TYPE = CONST.INSTALLER_TYPE
-CI_INSTALLER_IP = CONST.INSTALLER_IP
+CI_INSTALLER_TYPE = CONST.__getattribute__('INSTALLER_TYPE')
+CI_INSTALLER_IP = CONST.__getattribute__('INSTALLER_IP')
 
 """ logging configuration """
 logger = logging.getLogger(__name__)
@@ -52,26 +53,27 @@ def create_tempest_resources(use_custom_images=False,
     logger.debug("Creating tenant and user for Tempest suite")
     tenant_id = os_utils.create_tenant(
         keystone_client,
-        CONST.tempest_identity_tenant_name,
-        CONST.tempest_identity_tenant_description)
+        CONST.__getattribute__('tempest_identity_tenant_name'),
+        CONST.__getattribute__('tempest_identity_tenant_description'))
     if not tenant_id:
         logger.error("Failed to create %s tenant"
-                     % CONST.tempest_identity_tenant_name)
+                     % CONST.__getattribute__('tempest_identity_tenant_name'))
 
-    user_id = os_utils.create_user(keystone_client,
-                                   CONST.tempest_identity_user_name,
-                                   CONST.tempest_identity_user_password,
-                                   None, tenant_id)
+    user_id = os_utils.create_user(
+        keystone_client,
+        CONST.__getattribute__('tempest_identity_user_name'),
+        CONST.__getattribute__('tempest_identity_user_password'),
+        None, tenant_id)
     if not user_id:
         logger.error("Failed to create %s user" %
-                     CONST.tempest_identity_user_name)
+                     CONST.__getattribute__('tempest_identity_user_name'))
 
     logger.debug("Creating private network for Tempest suite")
     network_dic = os_utils.create_shared_network_full(
-        CONST.tempest_private_net_name,
-        CONST.tempest_private_subnet_name,
-        CONST.tempest_router_name,
-        CONST.tempest_private_subnet_cidr)
+        CONST.__getattribute__('tempest_private_net_name'),
+        CONST.__getattribute__('tempest_private_subnet_name'),
+        CONST.__getattribute__('tempest_router_name'),
+        CONST.__getattribute__('tempest_private_subnet_cidr'))
     if network_dic is None:
         raise Exception('Failed to create private network')
 
@@ -80,41 +82,45 @@ def create_tempest_resources(use_custom_images=False,
     flavor_id = ""
     flavor_id_alt = ""
 
-    if CONST.tempest_use_custom_images or use_custom_images:
+    if (CONST.__getattribute__('tempest_use_custom_images') or
+       use_custom_images):
         # adding alternative image should be trivial should we need it
         logger.debug("Creating image for Tempest suite")
         _, image_id = os_utils.get_or_create_image(
-            CONST.openstack_image_name, GLANCE_IMAGE_PATH,
-            CONST.openstack_image_disk_format)
+            CONST.__getattribute__('openstack_image_name'),
+            GLANCE_IMAGE_PATH,
+            CONST.__getattribute__('openstack_image_disk_format'))
         if image_id is None:
             raise Exception('Failed to create image')
 
     if use_custom_images:
         logger.debug("Creating 2nd image for Tempest suite")
         _, image_id_alt = os_utils.get_or_create_image(
-            CONST.openstack_image_name_alt, GLANCE_IMAGE_PATH,
-            CONST.openstack_image_disk_format)
+            CONST.__getattribute__('openstack_image_name_alt'),
+            GLANCE_IMAGE_PATH,
+            CONST.__getattribute__('openstack_image_disk_format'))
         if image_id_alt is None:
             raise Exception('Failed to create image')
 
-    if CONST.tempest_use_custom_flavors or use_custom_flavors:
+    if (CONST.__getattribute__('tempest_use_custom_flavors') or
+       use_custom_flavors):
         # adding alternative flavor should be trivial should we need it
         logger.debug("Creating flavor for Tempest suite")
         _, flavor_id = os_utils.get_or_create_flavor(
-            CONST.openstack_flavor_name,
-            CONST.openstack_flavor_ram,
-            CONST.openstack_flavor_disk,
-            CONST.openstack_flavor_vcpus)
+            CONST.__getattribute__('openstack_flavor_name'),
+            CONST.__getattribute__('openstack_flavor_ram'),
+            CONST.__getattribute__('openstack_flavor_disk'),
+            CONST.__getattribute__('openstack_flavor_vcpus'))
         if flavor_id is None:
             raise Exception('Failed to create flavor')
 
     if use_custom_flavors:
         logger.debug("Creating 2nd flavor for tempest_defcore")
         _, flavor_id_alt = os_utils.get_or_create_flavor(
-            CONST.openstack_flavor_name_alt,
-            CONST.openstack_flavor_ram,
-            CONST.openstack_flavor_disk,
-            CONST.openstack_flavor_vcpus)
+            CONST.__getattribute__('openstack_flavor_name_alt'),
+            CONST.__getattribute__('openstack_flavor_ram'),
+            CONST.__getattribute__('openstack_flavor_disk'),
+            CONST.__getattribute__('openstack_flavor_vcpus'))
         if flavor_id_alt is None:
             raise Exception('Failed to create flavor')
 
@@ -132,7 +138,7 @@ def get_verifier_id():
     Returns verifer id for current Tempest
     """
     cmd = ("rally verify list-verifiers | awk '/" +
-           CONST.tempest_deployment_name +
+           CONST.__getattribute__('tempest_deployment_name') +
            "/ {print $2}'")
     p = subprocess.Popen(cmd, shell=True,
                          stdout=subprocess.PIPE,
@@ -149,7 +155,7 @@ def get_verifier_deployment_id():
     Returns deployment id for active Rally deployment
     """
     cmd = ("rally deployment list | awk '/" +
-           CONST.rally_deployment_name +
+           CONST.__getattribute__('rally_deployment_name') +
            "/ {print $2}'")
     p = subprocess.Popen(cmd, shell=True,
                          stdout=subprocess.PIPE,
@@ -168,7 +174,7 @@ def get_verifier_repo_dir(verifier_id):
     if not verifier_id:
         verifier_id = get_verifier_id()
 
-    return os.path.join(CONST.dir_rally_inst,
+    return os.path.join(CONST.__getattribute__('dir_rally_inst'),
                         'verification',
                         'verifier-{}'.format(verifier_id),
                         'repo')
@@ -184,7 +190,7 @@ def get_verifier_deployment_dir(verifier_id, deployment_id):
     if not deployment_id:
         deployment_id = get_verifier_deployment_id()
 
-    return os.path.join(CONST.dir_rally_inst,
+    return os.path.join(CONST.__getattribute__('dir_rally_inst'),
                         'verification',
                         'verifier-{}'.format(verifier_id),
                         'for-deployment-{}'.format(deployment_id))
@@ -247,8 +253,9 @@ def configure_tempest_defcore(deployment_dir, img_flavor_dict):
     with open(conf_file, 'wb') as config_file:
         config.write(config_file)
 
-    confpath = os.path.join(CONST.dir_functest_test,
-                            CONST.refstack_tempest_conf_path)
+    confpath = os.path.join(
+        CONST.__getattribute__('dir_functest_test'),
+        CONST.__getattribute__('refstack_tempest_conf_path'))
     shutil.copyfile(conf_file, confpath)
 
 
@@ -263,32 +270,37 @@ def configure_tempest_update_params(tempest_conf_file,
     config.set(
         'compute',
         'fixed_network_name',
-        CONST.tempest_private_net_name)
+        CONST.__getattribute__('tempest_private_net_name'))
     config.set('compute', 'volume_device_name',
-               CONST.tempest_volume_device_name)
-    if CONST.tempest_use_custom_images:
+               CONST.__getattribute__('tempest_volume_device_name'))
+    if CONST.__getattribute__('tempest_use_custom_images'):
         if IMAGE_ID is not None:
             config.set('compute', 'image_ref', IMAGE_ID)
         if IMAGE_ID_ALT is not None:
             config.set('compute', 'image_ref_alt', IMAGE_ID_ALT)
-    if CONST.tempest_use_custom_flavors:
+    if CONST.__getattribute__('tempest_use_custom_flavors'):
         if FLAVOR_ID is not None:
             config.set('compute', 'flavor_ref', FLAVOR_ID)
         if FLAVOR_ID_ALT is not None:
             config.set('compute', 'flavor_ref_alt', FLAVOR_ID_ALT)
-    config.set('identity', 'tenant_name', CONST.tempest_identity_tenant_name)
-    config.set('identity', 'username', CONST.tempest_identity_user_name)
-    config.set('identity', 'password', CONST.tempest_identity_user_password)
+    config.set('identity', 'tenant_name',
+               CONST.__getattribute__('tempest_identity_tenant_name'))
+    config.set('identity', 'username',
+               CONST.__getattribute__('tempest_identity_user_name'))
+    config.set('identity', 'password',
+               CONST.__getattribute__('tempest_identity_user_password'))
     config.set('identity', 'region', 'RegionOne')
     config.set(
-        'validation', 'ssh_timeout', CONST.tempest_validation_ssh_timeout)
+        'validation', 'ssh_timeout',
+        CONST.__getattribute__('tempest_validation_ssh_timeout'))
     config.set('object-storage', 'operator_role',
-               CONST.tempest_object_storage_operator_role)
+               CONST.__getattribute__('tempest_object_storage_operator_role'))
 
-    if CONST.OS_ENDPOINT_TYPE is not None:
+    if CONST.__getattribute__('OS_ENDPOINT_TYPE') is not None:
         sections = config.sections()
         if os_utils.is_keystone_v3():
-            config.set('identity', 'v3_endpoint_type', CONST.OS_ENDPOINT_TYPE)
+            config.set('identity', 'v3_endpoint_type',
+                       CONST.__getattribute__('OS_ENDPOINT_TYPE'))
             if 'identity-feature-enabled' not in sections:
                 config.add_section('identity-feature-enabled')
                 config.set('identity-feature-enabled', 'api_v2', False)
@@ -304,7 +316,7 @@ def configure_tempest_update_params(tempest_conf_file,
             if service not in sections:
                 config.add_section(service)
             config.set(service, 'endpoint_type',
-                       CONST.OS_ENDPOINT_TYPE)
+                       CONST.__getattribute__('OS_ENDPOINT_TYPE'))
 
     with open(tempest_conf_file, 'wb') as config_file:
         config.write(config_file)
@@ -365,22 +377,22 @@ def configure_tempest_multisite_params(tempest_conf_file):
                        "StrictHostKeyChecking=no")
 
         # Get the controller IP from the fuel node
-        cmd = 'sshpass -p %s ssh 2>/dev/null %s %s@%s \
-                \'fuel node --env 1| grep controller | grep "True\|  1" \
-                | awk -F\| "{print \$5}"\'' % (installer_password,
+        cmd = ('sshpass -p %s ssh 2>/dev/null %s %s@%s '
+               '\'fuel node --env 1| grep controller | grep "True\|  1" '
+               '| awk -F\| "{print \$5}"\'' % (installer_password,
                                                ssh_options,
                                                installer_username,
-                                               installer_ip)
+                                               installer_ip))
         multisite_controller_ip = "".join(os.popen(cmd).read().split())
 
         # Login to controller and get bind host details
-        cmd = 'sshpass -p %s ssh 2>/dev/null  %s %s@%s "ssh %s \\" \
-            grep -e "^bind_" %s  \\""' % (installer_password,
-                                          ssh_options,
-                                          installer_username,
-                                          installer_ip,
-                                          multisite_controller_ip,
-                                          kingbird_conf_path)
+        cmd = ('sshpass -p %s ssh 2>/dev/null  %s %s@%s "ssh %s \\" '
+               'grep -e "^bind_" %s  \\""' % (installer_password,
+                                              ssh_options,
+                                              installer_username,
+                                              installer_ip,
+                                              multisite_controller_ip,
+                                              kingbird_conf_path))
         bind_details = os.popen(cmd).read()
         bind_details = "".join(bind_details.split())
         # Extract port number from the bind details
diff --git a/functest/opnfv_tests/openstack/tempest/tempest.py b/functest/opnfv_tests/openstack/tempest/tempest.py
index a41d07c7..233ceb48 100644
--- a/functest/opnfv_tests/openstack/tempest/tempest.py
+++ b/functest/opnfv_tests/openstack/tempest/tempest.py
@@ -81,8 +81,8 @@ class TempestCommon(testcase.TestCase):
         result_file = open(conf_utils.TEMPEST_LIST, 'w')
         black_tests = []
         try:
-            installer_type = CONST.INSTALLER_TYPE
-            deploy_scenario = CONST.DEPLOY_SCENARIO
+            installer_type = CONST.__getattribute__('INSTALLER_TYPE')
+            deploy_scenario = CONST.__getattribute__('DEPLOY_SCENARIO')
             if (bool(installer_type) * bool(deploy_scenario)):
                 # if INSTALLER_TYPE and DEPLOY_SCENARIO are set we read the
                 # file
@@ -119,9 +119,9 @@ class TempestCommon(testcase.TestCase):
 
         header = ("Tempest environment:\n"
                   "  SUT: %s\n  Scenario: %s\n  Node: %s\n  Date: %s\n" %
-                  (CONST.INSTALLER_TYPE,
-                   CONST.DEPLOY_SCENARIO,
-                   CONST.NODE_NAME,
+                  (CONST.__getattribute__('INSTALLER_TYPE'),
+                   CONST.__getattribute__('DEPLOY_SCENARIO'),
+                   CONST.__getattribute__('NODE_NAME'),
                    time.strftime("%a %b %d %H:%M:%S %Z %Y")))
 
         f_stdout = open(
@@ -273,7 +273,8 @@ class TempestMultisite(TempestCommon):
         TempestCommon.__init__(self, **kwargs)
         self.MODE = "feature_multisite"
         self.OPTION = "--concurrency 1"
-        conf_utils.install_verifier_ext(CONST.dir_repo_kingbird)
+        conf_utils.install_verifier_ext(
+            CONST.__getattribute__('dir_repo_kingbird'))
 
 
 class TempestCustom(TempestCommon):
diff --git a/functest/tests/unit/openstack/rally/test_rally.py b/functest/tests/unit/openstack/rally/test_rally.py
index c7828618..d55a825d 100644
--- a/functest/tests/unit/openstack/rally/test_rally.py
+++ b/functest/tests/unit/openstack/rally/test_rally.py
@@ -39,7 +39,7 @@ class OSRallyTesting(unittest.TestCase):
             self.polling_iter = 2
 
     def test_build_task_args_missing_floating_network(self):
-        CONST.OS_AUTH_URL = None
+        CONST.__setattr__('OS_AUTH_URL', None)
         with mock.patch('functest.opnfv_tests.openstack.rally.rally.'
                         'os_utils.get_external_net',
                         return_value=None):
@@ -47,7 +47,7 @@ class OSRallyTesting(unittest.TestCase):
             self.assertEqual(task_args['floating_network'], '')
 
     def test_build_task_args_missing_net_id(self):
-        CONST.OS_AUTH_URL = None
+        CONST.__setattr__('OS_AUTH_URL', None)
         self.rally_base.network_dict['net_id'] = ''
         with mock.patch('functest.opnfv_tests.openstack.rally.rally.'
                         'os_utils.get_external_net',
@@ -56,7 +56,7 @@ class OSRallyTesting(unittest.TestCase):
             self.assertEqual(task_args['netid'], '')
 
     def test_build_task_args_missing_auth_url(self):
-        CONST.OS_AUTH_URL = None
+        CONST.__setattr__('OS_AUTH_URL', None)
         with mock.patch('functest.opnfv_tests.openstack.rally.rally.'
                         'os_utils.get_external_net',
                         return_value='test_floating_network'):
@@ -136,8 +136,8 @@ class OSRallyTesting(unittest.TestCase):
                          'lineline')
 
     def test_excl_scenario_default(self):
-        CONST.INSTALLER_TYPE = 'test_installer'
-        CONST.DEPLOY_SCENARIO = 'test_scenario'
+        CONST.__setattr__('INSTALLER_TYPE', 'test_installer')
+        CONST.__setattr__('DEPLOY_SCENARIO', 'test_scenario')
         dic = {'scenario': [{'scenarios': ['test_scenario'],
                              'installers': ['test_installer'],
                              'tests': ['test']}]}
@@ -154,8 +154,8 @@ class OSRallyTesting(unittest.TestCase):
                                  [])
 
     def test_excl_func_default(self):
-        CONST.INSTALLER_TYPE = 'test_installer'
-        CONST.DEPLOY_SCENARIO = 'test_scenario'
+        CONST.__setattr__('INSTALLER_TYPE', 'test_installer')
+        CONST.__setattr__('DEPLOY_SCENARIO', 'test_scenario')
         dic = {'functionality': [{'functions': ['no_live_migration'],
                                   'tests': ['test']}]}
         with mock.patch('__builtin__.open', mock.mock_open()), \
diff --git a/functest/tests/unit/openstack/tempest/test_conf_utils.py b/functest/tests/unit/openstack/tempest/test_conf_utils.py
index 8ca5cc5b..e63f256d 100644
--- a/functest/tests/unit/openstack/tempest/test_conf_utils.py
+++ b/functest/tests/unit/openstack/tempest/test_conf_utils.py
@@ -54,12 +54,12 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
                        return_value=(mock.Mock(), None)), \
                 self.assertRaises(Exception) as context:
 
-            CONST.tempest_use_custom_images = True
+            CONST.__setattr__('tempest_use_custom_images', True)
             conf_utils.create_tempest_resources()
             msg = 'Failed to create image'
             self.assertTrue(msg in context)
 
-            CONST.tempest_use_custom_images = False
+            CONST.__setattr__('tempest_use_custom_images', False)
             conf_utils.create_tempest_resources(use_custom_images=True)
             msg = 'Failed to create image'
             self.assertTrue(msg in context)
@@ -84,20 +84,20 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
                        'os_utils.get_or_create_flavor',
                        return_value=(mock.Mock(), None)), \
                 self.assertRaises(Exception) as context:
-            CONST.tempest_use_custom_images = True
-            CONST.tempest_use_custom_flavors = True
+            CONST.__setattr__('tempest_use_custom_images', True)
+            CONST.__setattr__('tempest_use_custom_flavors', True)
             conf_utils.create_tempest_resources()
             msg = 'Failed to create flavor'
             self.assertTrue(msg in context)
 
-            CONST.tempest_use_custom_images = True
-            CONST.tempest_use_custom_flavors = False
+            CONST.__setattr__('tempest_use_custom_images', True)
+            CONST.__setattr__('tempest_use_custom_flavors', False)
             conf_utils.create_tempest_resources(use_custom_flavors=False)
             msg = 'Failed to create flavor'
             self.assertTrue(msg in context)
 
     def test_get_verifier_id_missing_verifier(self):
-        CONST.tempest_deployment_name = 'test_deploy_name'
+        CONST.__setattr__('tempest_deployment_name', 'test_deploy_name')
         with mock.patch('functest.opnfv_tests.openstack.tempest.'
                         'conf_utils.subprocess.Popen') as mock_popen, \
                 self.assertRaises(Exception):
@@ -108,7 +108,7 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
             conf_utils.get_verifier_id(),
 
     def test_get_verifier_id_default(self):
-        CONST.tempest_deployment_name = 'test_deploy_name'
+        CONST.__setattr__('tempest_deployment_name', 'test_deploy_name')
         with mock.patch('functest.opnfv_tests.openstack.tempest.'
                         'conf_utils.subprocess.Popen') as mock_popen:
             mock_stdout = mock.Mock()
@@ -120,7 +120,7 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
                              'test_deploy_id')
 
     def test_get_verifier_deployment_id_missing_rally(self):
-        CONST.rally_deployment_name = 'test_rally_deploy_name'
+        CONST.__setattr__('tempest_deployment_name', 'test_deploy_name')
         with mock.patch('functest.opnfv_tests.openstack.tempest.'
                         'conf_utils.subprocess.Popen') as mock_popen, \
                 self.assertRaises(Exception):
@@ -131,7 +131,7 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
             conf_utils.get_verifier_deployment_id(),
 
     def test_get_verifier_deployment_id_default(self):
-        CONST.rally_deployment_name = 'test_rally_deploy_name'
+        CONST.__setattr__('tempest_deployment_name', 'test_deploy_name')
         with mock.patch('functest.opnfv_tests.openstack.tempest.'
                         'conf_utils.subprocess.Popen') as mock_popen:
             mock_stdout = mock.Mock()
@@ -240,8 +240,8 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
             mock.patch('__builtin__.open', mock.mock_open()), \
             mock.patch('functest.opnfv_tests.openstack.tempest.'
                        'conf_utils.shutil.copyfile'):
-            CONST.dir_functest_test = 'test_dir'
-            CONST.refstack_tempest_conf_path = 'test_path'
+            CONST.__setattr__('dir_functest_test', 'test_dir')
+            CONST.__setattr__('refstack_tempest_conf_path', 'test_path')
             conf_utils.configure_tempest_defcore('test_dep_dir',
                                                  img_flavor_dict)
             mset.assert_any_call('compute', 'image_ref', 'test_image_id')
@@ -266,8 +266,8 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
             mock.patch('__builtin__.open', mock.mock_open()), \
             mock.patch('functest.opnfv_tests.openstack.tempest.'
                        'conf_utils.backup_tempest_config'):
-            CONST.dir_functest_test = 'test_dir'
-            CONST.OS_ENDPOINT_TYPE = None
+            CONST.__setattr__('dir_functest_test', 'test_dir')
+            CONST.__setattr__('OS_ENDPOINT_TYPE', None)
             conf_utils.\
                 configure_tempest_update_params('test_conf_file',
                                                 IMAGE_ID=image_id,
@@ -277,25 +277,25 @@ class OSTempestConfUtilsTesting(unittest.TestCase):
             self.assertTrue(mwrite.called)
 
     def test_configure_tempest_update_params_missing_image_id(self):
-            CONST.tempest_use_custom_images = True
+            CONST.__setattr__('tempest_use_custom_images', True)
             self._test_missing_param(('compute', 'image_ref',
                                       'test_image_id'), 'test_image_id',
                                      None)
 
     def test_configure_tempest_update_params_missing_image_id_alt(self):
-            CONST.tempest_use_custom_images = True
+            CONST.__setattr__('tempest_use_custom_images', True)
             conf_utils.IMAGE_ID_ALT = 'test_image_id_alt'
             self._test_missing_param(('compute', 'image_ref_alt',
                                       'test_image_id_alt'), None, None)
 
     def test_configure_tempest_update_params_missing_flavor_id(self):
-            CONST.tempest_use_custom_flavors = True
+            CONST.__setattr__('tempest_use_custom_flavors', True)
             self._test_missing_param(('compute', 'flavor_ref',
                                       'test_flavor_id'), None,
                                      'test_flavor_id')
 
     def test_configure_tempest_update_params_missing_flavor_id_alt(self):
-            CONST.tempest_use_custom_flavors = True
+            CONST.__setattr__('tempest_use_custom_flavors', True)
             conf_utils.FLAVOR_ID_ALT = 'test_flavor_id_alt'
             self._test_missing_param(('compute', 'flavor_ref_alt',
                                       'test_flavor_id_alt'), None,
diff --git a/functest/tests/unit/openstack/tempest/test_tempest.py b/functest/tests/unit/openstack/tempest/test_tempest.py
index bb75c9ed..0baeff91 100644
--- a/functest/tests/unit/openstack/tempest/test_tempest.py
+++ b/functest/tests/unit/openstack/tempest/test_tempest.py
@@ -114,8 +114,8 @@ class OSTempestTesting(unittest.TestCase):
             mock.patch.object(self.tempestcommon, 'read_file',
                               return_value=['test1', 'test2']):
             conf_utils.TEMPEST_BLACKLIST = Exception
-            CONST.INSTALLER_TYPE = 'installer_type'
-            CONST.DEPLOY_SCENARIO = 'deploy_scenario'
+            CONST.__setattr__('INSTALLER_TYPE', 'installer_type')
+            CONST.__setattr__('DEPLOY_SCENARIO', 'deploy_scenario')
             self.tempestcommon.apply_tempest_blacklist()
             obj = m()
             obj.write.assert_any_call('test1\n')
@@ -130,8 +130,8 @@ class OSTempestTesting(unittest.TestCase):
                               return_value=['test1', 'test2']), \
             mock.patch('functest.opnfv_tests.openstack.tempest.tempest.'
                        'yaml.safe_load', return_value=item_dict):
-            CONST.INSTALLER_TYPE = 'installer_type'
-            CONST.DEPLOY_SCENARIO = 'deploy_scenario'
+            CONST.__setattr__('INSTALLER_TYPE', 'installer_type')
+            CONST.__setattr__('DEPLOY_SCENARIO', 'deploy_scenario')
             self.tempestcommon.apply_tempest_blacklist()
             obj = m()
             obj.write.assert_any_call('test1\n')