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# Copyright (C) 2025 Red Hat, Inc.
#
# 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
from unittest import TestCase
from oslo_config import cfg
from oslo_service.backend._threading import service
class DummyService(service.ServiceBase):
def start(self):
pass
def stop(self, graceful=False):
pass
def wait(self):
pass
def reset(self):
pass
class ProcessLauncherTestCase(TestCase):
def setUp(self):
super().setUp()
self.conf = cfg.ConfigOpts()
def test_accepts_wait_interval_and_logs_warning(self):
# Patch the actual logger used in the module
with mock.patch('warnings.warn') as mock_warn:
launcher = service.ProcessLauncher(self.conf, wait_interval=0.1)
self.assertIsInstance(launcher, service.ProcessLauncher)
# Ensure warning is logged
mock_warn.assert_called_once()
self.assertIn('wait_interval', mock_warn.call_args[0][0])
def test_no_warning_without_wait_interval(self):
with mock.patch('warnings.warn') as mock_warn:
launcher = service.ProcessLauncher(self.conf)
self.assertIsInstance(launcher, service.ProcessLauncher)
mock_warn.assert_not_called()
def test_allows_multiple_launch_service_calls(self):
launcher = service.ProcessLauncher(self.conf)
s1 = DummyService()
s2 = DummyService()
# Just check that both calls do not raise
try:
launcher.launch_service(s1)
launcher.launch_service(s2)
except Exception as e:
self.fail(
f"Multiple launch_service() calls raised an exception: {e}")
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