Fix warnings in all snaps-related modules

It also adds vping/__init__.py to stop skipping vping unit tests.
It removes the useless import os which is not required for mock (here
the mock patch was simply false).

It should be noted that the code is partially duplicated between
snaps_test_runner.py and vping_base_base.py. A small part of code has
been rewritten to fix that without multi inheritance.

Change-Id: I2e3e181ad7dab8aa41afb1e63d0b6795ff0d1610
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

3 files changed, 31 insertions, 45 deletions

diff --git a/functest/opnfv_tests/openstack/vping/vping_base.py b/functest/opnfv_tests/openstack/vping/vping_base.py
index df9774ec..b99fdf6b 100644
--- a/functest/opnfv_tests/openstack/vping/vping_base.py
+++ b/functest/opnfv_tests/openstack/vping/vping_base.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 # Copyright (c) 2017 Cable Television Laboratories, Inc. and others.
 #
 # This program and the accompanying materials
@@ -37,19 +39,15 @@ class VPingBase(testcase.TestCase):
 
     def __init__(self, **kwargs):
         super(VPingBase, self).__init__(**kwargs)
-
         self.logger = logging.getLogger(__name__)
-
         if 'os_creds' in kwargs:
             self.os_creds = kwargs['os_creds']
         else:
-            creds_override = None
-            if hasattr(CONST, 'snaps_os_creds_override'):
-                creds_override = CONST.__getattribute__(
-                    'snaps_os_creds_override')
-
+            creds_override = getattr(
+                CONST, 'snaps_os_creds_override') if hasattr(
+                    CONST, 'snaps_os_creds_override') else None
             self.os_creds = openstack_tests.get_credentials(
-                os_env_file=CONST.__getattribute__('openstack_creds'),
+                os_env_file=getattr(CONST, 'openstack_creds'),
                 overrides=creds_override)
 
         self.creators = list()
@@ -62,27 +60,24 @@ class VPingBase(testcase.TestCase):
         # Shared metadata
         self.guid = '-' + str(uuid.uuid4())
 
-        self.router_name = CONST.__getattribute__(
-            'vping_router_name') + self.guid
-        self.vm1_name = CONST.__getattribute__('vping_vm_name_1') + self.guid
-        self.vm2_name = CONST.__getattribute__('vping_vm_name_2') + self.guid
-
-        self.vm_boot_timeout = CONST.__getattribute__('vping_vm_boot_timeout')
-        self.vm_delete_timeout = CONST.__getattribute__(
-            'vping_vm_delete_timeout')
-        self.vm_ssh_connect_timeout = CONST.__getattribute__(
-            'vping_vm_ssh_connect_timeout')
-        self.ping_timeout = CONST.__getattribute__('vping_ping_timeout')
+        self.router_name = getattr(CONST, 'vping_router_name') + self.guid
+        self.vm1_name = getattr(CONST, 'vping_vm_name_1') + self.guid
+        self.vm2_name = getattr(CONST, 'vping_vm_name_2') + self.guid
+
+        self.vm_boot_timeout = getattr(CONST, 'vping_vm_boot_timeout')
+        self.vm_delete_timeout = getattr(CONST, 'vping_vm_delete_timeout')
+        self.vm_ssh_connect_timeout = getattr(
+            CONST, 'vping_vm_ssh_connect_timeout')
+        self.ping_timeout = getattr(CONST, 'vping_ping_timeout')
         self.flavor_name = 'vping-flavor' + self.guid
 
         # Move this configuration option up for all tests to leverage
         if hasattr(CONST, 'snaps_images_cirros'):
-            self.cirros_image_config = CONST.__getattribute__(
-                'snaps_images_cirros')
+            self.cirros_image_config = getattr(CONST, 'snaps_images_cirros')
         else:
             self.cirros_image_config = None
 
-    def run(self):
+    def run(self, **kwargs):  # pylint: disable=too-many-locals
         """
         Begins the test execution which should originate from the subclass
         """
@@ -95,7 +90,7 @@ class VPingBase(testcase.TestCase):
                 '%Y-%m-%d %H:%M:%S'))
 
         image_base_name = '{}-{}'.format(
-            CONST.__getattribute__('vping_image_name'),
+            getattr(CONST, 'vping_image_name'),
             str(self.guid))
         os_image_settings = openstack_tests.cirros_image_settings(
             image_base_name, image_metadata=self.cirros_image_config)
@@ -105,26 +100,21 @@ class VPingBase(testcase.TestCase):
             self.os_creds, os_image_settings)
         self.creators.append(self.image_creator)
 
-        private_net_name = CONST.__getattribute__(
-            'vping_private_net_name') + self.guid
-        private_subnet_name = CONST.__getattribute__(
-            'vping_private_subnet_name') + self.guid
-        private_subnet_cidr = CONST.__getattribute__(
-            'vping_private_subnet_cidr')
+        private_net_name = getattr(CONST, 'vping_private_net_name') + self.guid
+        private_subnet_name = getattr(
+            CONST, 'vping_private_subnet_name') + self.guid
+        private_subnet_cidr = getattr(CONST, 'vping_private_subnet_cidr')
 
         vping_network_type = None
         vping_physical_network = None
         vping_segmentation_id = None
 
         if hasattr(CONST, 'vping_network_type'):
-            vping_network_type = CONST.__getattribute__(
-                'vping_network_type')
+            vping_network_type = getattr(CONST, 'vping_network_type')
         if hasattr(CONST, 'vping_physical_network'):
-            vping_physical_network = CONST.__getattribute__(
-                'vping_physical_network')
+            vping_physical_network = getattr(CONST, 'vping_physical_network')
         if hasattr(CONST, 'vping_segmentation_id'):
-            vping_segmentation_id = CONST.__getattribute__(
-                'vping_segmentation_id')
+            vping_segmentation_id = getattr(CONST, 'vping_segmentation_id')
 
         self.logger.info(
             "Creating network with name: '%s'", private_net_name)
@@ -154,7 +144,7 @@ class VPingBase(testcase.TestCase):
 
         self.logger.info(
             "Creating flavor with name: '%s'", self.flavor_name)
-        scenario = CONST.__getattribute__('DEPLOY_SCENARIO')
+        scenario = getattr(CONST, 'DEPLOY_SCENARIO')
         flavor_metadata = None
         flavor_ram = 512
         if 'ovs' in scenario or 'fdio' in scenario:
@@ -197,7 +187,7 @@ class VPingBase(testcase.TestCase):
         Cleanup all OpenStack objects. Should be called on completion
         :return:
         """
-        if CONST.__getattribute__('vping_cleanup_objects') == 'True':
+        if getattr(CONST, 'vping_cleanup_objects') == 'True':
             for creator in reversed(self.creators):
                 try:
                     creator.clean()
diff --git a/functest/opnfv_tests/openstack/vping/vping_ssh.py b/functest/opnfv_tests/openstack/vping/vping_ssh.py
index 7df767ed..57e177e5 100644
--- a/functest/opnfv_tests/openstack/vping/vping_ssh.py
+++ b/functest/opnfv_tests/openstack/vping/vping_ssh.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-#
+
 # Copyright (c) 2015 All rights reserved
 # This program and the accompanying materials
 # are made available under the terms of the Apache License, Version 2.0
@@ -7,12 +7,8 @@
 #
 # http://www.apache.org/licenses/LICENSE-2.0
 
-
 """vPingSSH testcase."""
 
-# This 1st import is here simply for pep8 as the 'os' package import appears
-# to be required for mock and the unit tests will fail without it
-import os  # noqa # pylint: disable=unused-import
 import time
 
 from scp import SCPClient
@@ -53,7 +49,7 @@ class VPingSSH(vping_base.VPingBase):
         self.sg_desc = CONST.__getattribute__('vping_sg_desc')
 
     @energy.enable_recording
-    def run(self):
+    def run(self, **kwargs):
         """
         Excecute VPingSSH testcase.
 
diff --git a/functest/opnfv_tests/openstack/vping/vping_userdata.py b/functest/opnfv_tests/openstack/vping/vping_userdata.py
index ceba0917..76cdcf83 100644
--- a/functest/opnfv_tests/openstack/vping/vping_userdata.py
+++ b/functest/opnfv_tests/openstack/vping/vping_userdata.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python
-#
+
 # Copyright (c) 2015 All rights reserved
 # This program and the accompanying materials
 # are made available under the terms of the Apache License, Version 2.0
@@ -29,7 +29,7 @@ class VPingUserdata(vping_base.VPingBase):
             kwargs["case_name"] = "vping_userdata"
         super(VPingUserdata, self).__init__(**kwargs)
 
-    def run(self):
+    def run(self, **kwargs):
         """
         Sets up the OpenStack VM instance objects then executes the ping and
         validates.