monasca-agent/tests/test_process.py
Sean McGinnis 1d4e926076
Use unittest.mock instead of third party mock
Now that we no longer support py27, we can use the standard library
unittest.mock module instead of the third party mock lib.

Change-Id: I1dca4b2c7eccf1b19482dde60b88a132935b48b8
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
2020-04-18 11:54:36 -05:00

127 lines
4.5 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.
from unittest import mock
import unittest
from tests.common import load_check
class TestSimpleProcess(unittest.TestCase):
def setUp(self):
self.psutil_process_iter_patcher = mock.patch('psutil.process_iter')
self.mock_process_iter = self.psutil_process_iter_patcher.start()
process_attrs = {
'name': 'process_name',
'pid': 1234,
'username': 'user',
'cmdline': '/usr/bin/process_name'
}
process = mock.Mock()
process.as_dict.return_value = process_attrs
self.mock_process_iter.return_value = [process]
config = {'init_config': {},
'instances': [{'name': 'test',
'search_string': ['process_name'],
'detailed': False}]}
self.check = load_check('process', config)
def tearDown(self):
self.psutil_process_iter_patcher.stop()
def testPidCount(self):
self.check.run()
metrics = self.check.get_metrics()
self.assertEqual(1, len(metrics))
self.assertEqual('process.pid_count', metrics[0]['measurement']['name'])
class TestDetailedProcess(unittest.TestCase):
def setUp(self):
self.psutil_process_patcher = mock.patch('psutil.Process')
self.psutil_process_iter_patcher = mock.patch('psutil.process_iter')
self.mock_process = self.psutil_process_patcher.start()
self.mock_process_iter = self.psutil_process_iter_patcher.start()
process_attrs_as_dict = {
'name': 'process_name',
'pid': 1234,
'username': 'user',
'cmdline': '/usr/bin/process_name',
}
process_attrs = {
'memory_info_ex.return_value': mock.Mock(rss=1048576),
'num_threads.return_value': 1,
'num_fds.return_value': 1,
'cpu_percent.return_value': 1,
'io_counters.return_value': mock.Mock(**{'read_count': 1,
'write_count': 1,
'read_bytes': 1024,
'write_bytes': 1024})
}
process = mock.Mock(**process_attrs)
process.as_dict.return_value = process_attrs_as_dict
self.mock_process_iter.return_value = [process]
self.mock_process.return_value = process
config = {'init_config': {},
'instances': [{'name': 'test',
'search_string': ['process_name'],
'detailed': True}]}
self.check = load_check('process', config)
def tearDown(self):
self.psutil_process_patcher.stop()
self.psutil_process_iter_patcher.stop()
def testPidCount(self):
self.check.run()
metrics = self.check.get_metrics()
self.assertGreater(len(metrics), 1)
def run_check(self):
self.check.prepare_run()
self.check.run()
metrics = self.check.get_metrics()
measurement_names = [metric['measurement']['name'] for metric in metrics]
measurement_names.sort()
return measurement_names
def testMeasurements(self):
measurement_names = self.run_check()
# first run will not have cpu_perc in it
expected_names = ['process.io.read_count',
'process.io.read_kbytes',
'process.io.write_count',
'process.io.write_kbytes',
'process.mem.rss_mbytes',
'process.open_file_descriptors',
'process.pid_count',
'process.thread_count']
self.assertListEqual(measurement_names, expected_names)
# run again to get cpu_perc
expected_names.insert(0, 'process.cpu_perc')
measurement_names = self.run_check()
self.assertListEqual(measurement_names, expected_names)