os-faults/os_faults/tests/unit/test_utils.py

85 lines
2.4 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import threading
import mock
from os_faults.tests.unit import test
from os_faults import utils
class MyException(Exception):
pass
class UtilsTestCase(test.TestCase):
def test_start_thread(self):
target = mock.Mock()
target_params = {'param1': 'val1', 'param2': 'val2'}
tw = utils.ThreadsWrapper()
tw.start_thread(target, **target_params)
tw.join_threads()
target.assert_has_calls([mock.call(param1='val1', param2='val2')])
self.assertIsInstance(tw.threads[0], threading.Thread)
self.assertEqual(len(tw.errors), 0)
def test_start_thread_raise_exception(self):
target = mock.Mock()
target.side_effect = MyException()
tw = utils.ThreadsWrapper()
tw.start_thread(target)
tw.join_threads()
self.assertEqual(type(tw.errors[0]), MyException)
def test_join_threads(self):
thread_1 = mock.Mock()
thread_2 = mock.Mock()
tw = utils.ThreadsWrapper()
tw.threads = [thread_1, thread_2]
tw.join_threads()
thread_1.join.assert_called_once()
thread_2.join.assert_called_once()
class MyClass(object):
FOO = 10
@utils.require_variables('FOO')
def method(self, a, b):
return self.FOO + a + b
@utils.require_variables('BAR', 'BAZ')
def method_that_miss_variables(self):
return self.BAR, self.BAZ
class RequiredVariablesTestCase(test.TestCase):
def test_require_variables(self):
inst = MyClass()
self.assertEqual(inst.method(1, b=2), 13)
def test_require_variables_not_implemented(self):
inst = MyClass()
err = self.assertRaises(NotImplementedError,
inst.method_that_miss_variables)
msg = 'BAR, BAZ required for MyClass.method_that_miss_variables'
self.assertEqual(str(err), msg)