Fix last Pylint error in Functest

It also fixes all pylint warnings in router and the related unit
tests. tox.ini is updated to ensure that no error is introduced.

Change-Id: Iddd74b0dac7b6581d72b04369140006c9e19f998
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

9 files changed, 75 insertions, 55 deletions

diff --git a/functest/opnfv_tests/vnf/router/cloudify_vrouter.py b/functest/opnfv_tests/vnf/router/cloudify_vrouter.py
index f2cd63fb..1596860d 100644
--- a/functest/opnfv_tests/vnf/router/cloudify_vrouter.py
+++ b/functest/opnfv_tests/vnf/router/cloudify_vrouter.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vrouter testcase implementation."""
 
 import logging
@@ -50,6 +52,7 @@ __author__ = "Shuya Nakama <shuya.nakama@okinawaopenlabs.org>"
 
 
 class CloudifyVrouter(vrouter_base.VrouterOnBoardingBase):
+    # pylint: disable=too-many-instance-attributes
     """vrouter testcase deployed with Cloudify Orchestrator."""
 
     __logger = logging.getLogger(__name__)
@@ -129,6 +132,7 @@ class CloudifyVrouter(vrouter_base.VrouterOnBoardingBase):
                 self.created_object.append(image_creator)
 
     def deploy_orchestrator(self):
+        # pylint: disable=too-many-locals,too-many-statements
         """
         Deploy Cloudify Manager.
         network, security group, fip, VM creation
@@ -408,7 +412,7 @@ class CloudifyVrouter(vrouter_base.VrouterOnBoardingBase):
                     try:
                         cfy_client.executions.cancel(execution['id'],
                                                      force=True)
-                    except:  # pylint: disable=broad-except
+                    except Exception:  # pylint: disable=broad-except
                         self.__logger.warn("Can't cancel the current exec")
 
             execution = cfy_client.executions.start(
@@ -419,27 +423,14 @@ class CloudifyVrouter(vrouter_base.VrouterOnBoardingBase):
             wait_for_execution(cfy_client, execution, self.__logger)
             cfy_client.deployments.delete(self.vnf['descriptor'].get('name'))
             cfy_client.blueprints.delete(self.vnf['descriptor'].get('name'))
-        except:  # pylint: disable=broad-except
+        except Exception:  # pylint: disable=broad-except
             self.__logger.warn("Some issue during the undeployment ..")
             self.__logger.warn("Tenant clean continue ..")
-
-        self.__logger.info('Remove the cloudify manager OS object ..')
-        for creator in reversed(self.created_object):
-            try:
-                creator.clean()
-            except Exception as exc:
-                self.logger.error('Unexpected error cleaning - %s', exc)
-
         super(CloudifyVrouter, self).clean()
 
-    def run(self, **kwargs):
-        """Execute CloudifyVrouter test case."""
-        return super(CloudifyVrouter, self).run(**kwargs)
-
     def get_vnf_info_list(self, target_vnf_name):
-        return self.util.get_vnf_info_list(self.cfy_manager_ip,
-                                           self.deployment_name,
-                                           target_vnf_name)
+        return self.util.get_vnf_info_list(
+            self.cfy_manager_ip, self.deployment_name, target_vnf_name)
 
 
 # ----------------------------------------------------------
diff --git a/functest/opnfv_tests/vnf/router/test_controller/function_test_exec.py b/functest/opnfv_tests/vnf/router/test_controller/function_test_exec.py
index d023d479..be7bee88 100644
--- a/functest/opnfv_tests/vnf/router/test_controller/function_test_exec.py
+++ b/functest/opnfv_tests/vnf/router/test_controller/function_test_exec.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vrouter function test execution module"""
 
 import logging
diff --git a/functest/opnfv_tests/vnf/router/utilvnf.py b/functest/opnfv_tests/vnf/router/utilvnf.py
index 9d196836..421cfe83 100644
--- a/functest/opnfv_tests/vnf/router/utilvnf.py
+++ b/functest/opnfv_tests/vnf/router/utilvnf.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """ Utility module of vrouter testcase """
 
 import json
@@ -46,7 +48,7 @@ NUMBER_OF_DIGITS_FOR_AVG_JITTER = 3
 NUMBER_OF_DIGITS_FOR_AVG_PKT_LOSS = 1
 
 
-class Utilvnf(object):
+class Utilvnf(object):  # pylint: disable=too-many-instance-attributes
     """ Utility class of vrouter testcase """
 
     logger = logging.getLogger(__name__)
@@ -107,7 +109,7 @@ class Utilvnf(object):
         self.test_result_json_file = "test_result.json"
         if os.path.isfile(self.test_result_json_file):
             os.remove(self.test_result_json_file)
-            self.logger.debug("removed %s" % self.test_result_json_file)
+            self.logger.debug("removed %s", self.test_result_json_file)
 
     def get_nova_client(self):
         nova_client = nova_utils.nova_client(self.snaps_creds)
@@ -127,7 +129,7 @@ class Utilvnf(object):
                 break
 
         address = server.addresses[
-                      network_name][NOVA_CILENT_NETWORK_INFO_INDEX]["addr"]
+            network_name][NOVA_CILENT_NETWORK_INFO_INDEX]["addr"]
 
         return address
 
@@ -141,8 +143,7 @@ class Utilvnf(object):
                 break
 
         mac_address = server.addresses[network_name][
-                          NOVA_CILENT_NETWORK_INFO_INDEX][
-                          "OS-EXT-IPS-MAC:mac_addr"]
+            NOVA_CILENT_NETWORK_INFO_INDEX]["OS-EXT-IPS-MAC:mac_addr"]
 
         return mac_address
 
@@ -226,10 +227,7 @@ class Utilvnf(object):
             vnf["user"] = self.image["user"]
             vnf["pass"] = self.image["pass"]
 
-            if vnf_name == target_vnf_name:
-                vnf["target_vnf_flag"] = True
-            else:
-                vnf["target_vnf_flag"] = False
+            vnf["target_vnf_flag"] = bool(vnf_name == target_vnf_name)
 
             self.logger.debug("vnf name : " + vnf_name)
             self.logger.debug(vnf_name + " floating ip address : " +
@@ -251,14 +249,16 @@ class Utilvnf(object):
 
         return vnf_info_list
 
-    def get_target_vnf(self, vnf_info_list):
+    @staticmethod
+    def get_target_vnf(vnf_info_list):
         for vnf in vnf_info_list:
             if vnf["target_vnf_flag"]:
                 return vnf
 
         return None
 
-    def get_reference_vnf_list(self, vnf_info_list):
+    @staticmethod
+    def get_reference_vnf_list(vnf_info_list):
         reference_vnf_list = []
         for vnf in vnf_info_list:
             if not vnf["target_vnf_flag"]:
@@ -266,14 +266,16 @@ class Utilvnf(object):
 
         return reference_vnf_list
 
-    def get_vnf_info(self, vnf_info_list, vnf_name):
+    @staticmethod
+    def get_vnf_info(vnf_info_list, vnf_name):
         for vnf in vnf_info_list:
             if vnf["vnf_name"] == vnf_name:
                 return vnf
 
         return None
 
-    def convert_functional_test_result(self, result_data_list):
+    @staticmethod
+    def convert_functional_test_result(result_data_list):
         result = {}
         for result_data in result_data_list:
             test_kind = result_data["test_kind"]
@@ -311,11 +313,12 @@ class Utilvnf(object):
             output_json_data = json.dumps(test_result,
                                           sort_keys=True,
                                           indent=4)
-            self.logger.debug("test_result %s" % output_json_data)
+            self.logger.debug("test_result %s", output_json_data)
         else:
-            self.logger.debug("Not found %s" % self.test_result_json_file)
+            self.logger.debug("Not found %s", self.test_result_json_file)
 
-    def get_test_scenario(self, file_path):
+    @staticmethod
+    def get_test_scenario(file_path):
         test_scenario_file = open(file_path,
                                   'r')
         test_scenario_yaml = yaml.safe_load(test_scenario_file)
diff --git a/functest/opnfv_tests/vnf/router/vnf_controller/checker.py b/functest/opnfv_tests/vnf/router/vnf_controller/checker.py
index 198a5ffc..a7a70f6d 100644
--- a/functest/opnfv_tests/vnf/router/vnf_controller/checker.py
+++ b/functest/opnfv_tests/vnf/router/vnf_controller/checker.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vrouter test result check module"""
 
 import json
@@ -24,7 +26,8 @@ class Checker(object):
     def __init__(self):
         self.logger.debug("init checker")
 
-    def load_check_rule(self, rule_file_dir, rule_file_name, parameter):
+    @staticmethod
+    def load_check_rule(rule_file_dir, rule_file_name, parameter):
         loader = FileSystemLoader(rule_file_dir,
                                   encoding='utf8')
         env = Environment(loader=loader)
@@ -33,7 +36,8 @@ class Checker(object):
         check_rule_data = json.loads(check_rule)
         return check_rule_data
 
-    def regexp_information(self, response, rules):
+    @staticmethod
+    def regexp_information(response, rules):
         status = False
         result_data = {}
 
diff --git a/functest/opnfv_tests/vnf/router/vnf_controller/command_generator.py b/functest/opnfv_tests/vnf/router/vnf_controller/command_generator.py
index 98cb14cc..7d9116bc 100644
--- a/functest/opnfv_tests/vnf/router/vnf_controller/command_generator.py
+++ b/functest/opnfv_tests/vnf/router/vnf_controller/command_generator.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """command generator module for vrouter testing"""
 
 import logging
@@ -21,12 +23,16 @@ class CommandGenerator(object):
     def __init__(self):
         self.logger.debug("init command generator")
 
-    def load_template(self, template_dir, template):
+    @staticmethod
+    def load_template(template_dir, template):
+        # pylint disable=missing-docstring
         loader = FileSystemLoader(template_dir,
                                   encoding='utf8')
         env = Environment(loader=loader)
         return env.get_template(template)
 
-    def command_create(self, template, parameter):
+    @staticmethod
+    def command_create(template, parameter):
+        # pylint disable=missing-docstring
         commands = template.render(parameter)
         return commands.split('\n')
diff --git a/functest/opnfv_tests/vnf/router/vnf_controller/ssh_client.py b/functest/opnfv_tests/vnf/router/vnf_controller/ssh_client.py
index c85a5735..628afd30 100644
--- a/functest/opnfv_tests/vnf/router/vnf_controller/ssh_client.py
+++ b/functest/opnfv_tests/vnf/router/vnf_controller/ssh_client.py
@@ -10,10 +10,11 @@
 """ssh client module for vrouter testing"""
 
 import logging
-import paramiko
 import time
 import yaml
 
+import paramiko
+
 from functest.opnfv_tests.vnf.router.utilvnf import Utilvnf
 
 RECEIVE_ROOP_WAIT = 1
@@ -23,7 +24,7 @@ DEFAULT_CONNECT_RETRY_COUNT = 10
 DEFAULT_SEND_TIMEOUT = 10
 
 
-class SshClient(object):
+class SshClient(object):  # pylint: disable=too-many-instance-attributes
     """ssh client class for vrouter testing"""
 
     logger = logging.getLogger(__name__)
@@ -51,6 +52,7 @@ class SshClient(object):
 
     def connect(self, time_out=DEFAULT_CONNECT_TIMEOUT,
                 retrycount=DEFAULT_CONNECT_RETRY_COUNT):
+        # pylint: disable=missing-docstring
         while retrycount > 0:
             try:
                 self.logger.info("SSH connect to %s.", self.ip_address)
@@ -72,7 +74,7 @@ class SshClient(object):
 
                 self.shell.recv(self.ssh_revieve_buff)
                 break
-            except:  # pylint: disable=broad-except
+            except Exception:  # pylint: disable=broad-except
                 self.logger.info("SSH timeout for %s...", self.ip_address)
                 time.sleep(time_out)
                 retrycount -= 1
@@ -88,13 +90,14 @@ class SshClient(object):
         return self.connected
 
     def send(self, cmd, prompt, timeout=DEFAULT_SEND_TIMEOUT):
+        # pylint: disable=missing-docstring
         if self.connected is True:
             self.shell.settimeout(timeout)
             self.logger.debug("Commandset : '%s'", cmd)
 
             try:
                 self.shell.send(cmd + '\n')
-            except:  # pylint: disable=broad-except
+            except Exception:  # pylint: disable=broad-except
                 self.logger.error("ssh send timeout : Command : '%s'", cmd)
                 return None
 
@@ -103,7 +106,7 @@ class SshClient(object):
                 time.sleep(RECEIVE_ROOP_WAIT)
                 try:
                     res = self.shell.recv(self.ssh_revieve_buff)
-                except:  # pylint: disable=broad-except
+                except Exception:  # pylint: disable=broad-except
                     self.logger.error("ssh receive timeout : Command : '%s'",
                                       cmd)
                     break
@@ -112,18 +115,19 @@ class SshClient(object):
 
             self.logger.debug("Response : '%s'", res_buff)
             return res_buff
-        else:
-            self.logger.error("Cannot connected to IP '%s'.", self.ip_address)
-            return None
+        self.logger.error("Cannot connected to IP '%s'.", self.ip_address)
+        return None
 
     def close(self):
+        # pylint: disable=missing-docstring
         if self.connected is True:
             self.ssh.close()
 
-    def error_check(response, err_strs=["error",
-                                        "warn",
-                                        "unknown command",
-                                        "already exist"]):
+    @staticmethod
+    def error_check(response, err_strs=None):
+        # pylint: disable=missing-docstring
+        if err_strs is None:
+            err_strs = ["error", "warn", "unknown command", "already exist"]
         for err in err_strs:
             if err in response:
                 return False
diff --git a/functest/opnfv_tests/vnf/router/vnf_controller/vm_controller.py b/functest/opnfv_tests/vnf/router/vnf_controller/vm_controller.py
index d1c2e324..10e48645 100644
--- a/functest/opnfv_tests/vnf/router/vnf_controller/vm_controller.py
+++ b/functest/opnfv_tests/vnf/router/vnf_controller/vm_controller.py
@@ -7,6 +7,8 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vm controll module"""
 
 import logging
diff --git a/functest/opnfv_tests/vnf/router/vnf_controller/vnf_controller.py b/functest/opnfv_tests/vnf/router/vnf_controller/vnf_controller.py
index 814e9e33..a5b1ad85 100644
--- a/functest/opnfv_tests/vnf/router/vnf_controller/vnf_controller.py
+++ b/functest/opnfv_tests/vnf/router/vnf_controller/vnf_controller.py
@@ -7,14 +7,17 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vrouter controll module"""
 
 import logging
 import os
-import prettytable
 import time
 import yaml
 
+import prettytable
+
 from functest.opnfv_tests.vnf.router.utilvnf import Utilvnf
 from functest.opnfv_tests.vnf.router.vnf_controller.checker import Checker
 from functest.opnfv_tests.vnf.router.vnf_controller.ssh_client import (
@@ -45,6 +48,7 @@ class VnfController(object):
 
     def config_vnf(self, source_vnf, destination_vnf, test_cmd_file_path,
                    parameter_file_path, prompt_file_path):
+        # pylint: disable=too-many-arguments
         parameter_file = open(parameter_file_path,
                               'r')
         cmd_input_param = yaml.safe_load(parameter_file)
@@ -63,6 +67,7 @@ class VnfController(object):
     def result_check(self, target_vnf, reference_vnf,
                      check_rule_file_path_list, parameter_file_path,
                      prompt_file_path):
+        # pylint: disable=too-many-arguments,too-many-locals
 
         res_dict_data_list = []
 
@@ -93,8 +98,8 @@ class VnfController(object):
         checker = Checker()
 
         res_table = prettytable.PrettyTable(
-                        header_style='upper', padding_width=5,
-                        field_names=['test item', 'result'])
+            header_style='upper', padding_width=5,
+            field_names=['test item', 'result'])
 
         status = True
         res_data_list = []
diff --git a/functest/opnfv_tests/vnf/router/vrouter_base.py b/functest/opnfv_tests/vnf/router/vrouter_base.py
index a534f1f2..0678313e 100644
--- a/functest/opnfv_tests/vnf/router/vrouter_base.py
+++ b/functest/opnfv_tests/vnf/router/vrouter_base.py
@@ -7,15 +7,18 @@
 # which accompanies this distribution, and is available at
 # http://www.apache.org/licenses/LICENSE-2.0
 
+# pylint: disable=missing-docstring
+
 """vrouter testing base class module"""
 
 import datetime
 import json
 import logging
 import os
-import pkg_resources
 import time
 
+import pkg_resources
+
 import functest.core.vnf as vnf
 from functest.utils.constants import CONST
 from functest.opnfv_tests.vnf.router.test_controller import function_test_exec
@@ -66,8 +69,7 @@ class VrouterOnBoardingBase(vnf.VnfOnBoarding):
                                          test_info["test_kind"] +
                                          " test.")
                         (result, result_data) = self.function_test_vrouter(
-                                                    target_vnf_name,
-                                                    test_info)
+                            target_vnf_name, test_info)
                         test_result_data_list.append(result_data)
                         if not result:
                             break
@@ -115,5 +117,6 @@ class VrouterOnBoardingBase(vnf.VnfOnBoarding):
         return result, test_result_data
 
     def get_vnf_info_list(self, target_vnf_name):
+        # pylint: disable=unused-argument,no-self-use
         vnf_info_list = []
         return vnf_info_list