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#!/usr/bin/env python
# Copyright (c) 2016 Orange and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
"""Define the parent class of all Functest TestCases."""
import logging
import os
import prettytable
import functest.utils.functest_utils as ft_utils
import functest.utils.openstack_clean as os_clean
import functest.utils.openstack_snapshot as os_snapshot
__author__ = "Cedric Ollivier <cedric.ollivier@orange.com>"
class TestCase(object):
"""Base model for single test case."""
EX_OK = os.EX_OK
"""everything is OK"""
EX_RUN_ERROR = os.EX_SOFTWARE
"""run() failed"""
EX_PUSH_TO_DB_ERROR = os.EX_SOFTWARE - 1
"""push_to_db() failed"""
EX_TESTCASE_FAILED = os.EX_SOFTWARE - 2
"""results are false"""
__logger = logging.getLogger(__name__)
def __init__(self, **kwargs):
self.details = {}
self.project_name = kwargs.get('project_name', 'functest')
self.case_name = kwargs.get('case_name', '')
self.criteria = kwargs.get('criteria', 100)
self.result = 0
self.start_time = 0
self.stop_time = 0
def __str__(self):
try:
assert self.project_name
assert self.case_name
result = 'PASS' if(self.is_successful(
) == TestCase.EX_OK) else 'FAIL'
msg = prettytable.PrettyTable(
header_style='upper', padding_width=5,
field_names=['test case', 'project', 'duration',
'result'])
msg.add_row([self.case_name, self.project_name,
self.get_duration(), result])
return msg.get_string()
except AssertionError:
self.__logger.error("We cannot print invalid objects")
return super(TestCase, self).__str__()
def get_duration(self):
"""Return the duration of the test case.
Returns:
duration if start_time and stop_time are set
"XX:XX" otherwise.
"""
try:
assert self.start_time
assert self.stop_time
if self.stop_time < self.start_time:
return "XX:XX"
return "{0[0]:02.0f}:{0[1]:02.0f}".format(divmod(
self.stop_time - self.start_time, 60))
except Exception: # pylint: disable=broad-except
self.__logger.error("Please run test before getting the duration")
return "XX:XX"
def is_successful(self):
"""Interpret the result of the test case.
It allows getting the result of TestCase. It completes run()
which only returns the execution status.
It can be overriden if checking result is not suitable.
Returns:
TestCase.EX_OK if result is 'PASS'.
TestCase.EX_TESTCASE_FAILED otherwise.
"""
try:
assert self.criteria
assert self.result is not None
if (not isinstance(self.result, str) and
not isinstance(self.criteria, str)):
if self.result >= self.criteria:
return TestCase.EX_OK
else:
# Backward compatibility
# It must be removed as soon as TestCase subclasses
# stop setting result = 'PASS' or 'FAIL'.
# In this case criteria is unread.
self.__logger.warning(
"Please update result which must be an int!")
if self.result == 'PASS':
return TestCase.EX_OK
except AssertionError:
self.__logger.error("Please run test before checking the results")
return TestCase.EX_TESTCASE_FAILED
def run(self, **kwargs):
"""Run the test case.
It allows running TestCase and getting its execution
status.
The subclasses must override the default implementation which
is false on purpose.
The new implementation must set the following attributes to
push the results to DB:
* result,
* start_time,
* stop_time.
Args:
kwargs: Arbitrary keyword arguments.
Returns:
TestCase.EX_RUN_ERROR.
"""
# pylint: disable=unused-argument
self.__logger.error("Run must be implemented")
return TestCase.EX_RUN_ERROR
def push_to_db(self):
"""Push the results of the test case to the DB.
It allows publishing the results and to check the status.
It could be overriden if the common implementation is not
suitable. The following attributes must be set before pushing
the results to DB:
* project_name,
* case_name,
* result,
* start_time,
* stop_time.
Returns:
TestCase.EX_OK if results were pushed to DB.
TestCase.EX_PUSH_TO_DB_ERROR otherwise.
"""
try:
assert self.project_name
assert self.case_name
assert self.start_time
assert self.stop_time
pub_result = 'PASS' if self.is_successful(
) == TestCase.EX_OK else 'FAIL'
if ft_utils.push_results_to_db(
self.project_name, self.case_name, self.start_time,
self.stop_time, pub_result, self.details):
self.__logger.info(
"The results were successfully pushed to DB")
return TestCase.EX_OK
else:
self.__logger.error("The results cannot be pushed to DB")
return TestCase.EX_PUSH_TO_DB_ERROR
except Exception: # pylint: disable=broad-except
self.__logger.exception("The results cannot be pushed to DB")
return TestCase.EX_PUSH_TO_DB_ERROR
def create_snapshot(self): # pylint: disable=no-self-use
"""Save the testing environment before running test.
It can be overriden if resources must be listed running the
test case.
Returns:
TestCase.EX_OK
"""
return TestCase.EX_OK
def clean(self):
"""Clean the resources.
It can be overriden if resources must be deleted after
running the test case.
"""
class OSGCTestCase(TestCase):
"""Model for single test case which requires an OpenStack Garbage
Collector."""
__logger = logging.getLogger(__name__)
def create_snapshot(self):
"""Create a snapshot listing the OpenStack resources.
Returns:
TestCase.EX_OK if os_snapshot.main() returns 0.
TestCase.EX_RUN_ERROR otherwise.
"""
try:
assert os_snapshot.main() == 0
self.__logger.info("OpenStack resources snapshot created")
return TestCase.EX_OK
except Exception: # pylint: disable=broad-except
self.__logger.exception("Cannot create the snapshot")
return TestCase.EX_RUN_ERROR
def clean(self):
"""Clean the OpenStack resources."""
try:
assert os_clean.main() == 0
self.__logger.info("OpenStack resources cleaned")
except Exception: # pylint: disable=broad-except
self.__logger.exception("Cannot clean the OpenStack resources")
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