incubator-airflow/tests/core/test_local_settings.py

176 строки
6.2 KiB
Python

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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 os
import sys
import tempfile
import unittest
from unittest.mock import MagicMock, call
from airflow.exceptions import AirflowClusterPolicyViolation
SETTINGS_FILE_POLICY = """
def test_policy(task_instance):
task_instance.run_as_user = "myself"
"""
SETTINGS_FILE_POLICY_WITH_DUNDER_ALL = """
__all__ = ["test_policy"]
def test_policy(task_instance):
task_instance.run_as_user = "myself"
def not_policy():
print("This shouldn't be imported")
"""
SETTINGS_FILE_POD_MUTATION_HOOK = """
def pod_mutation_hook(pod):
pod.namespace = 'airflow-tests'
"""
SETTINGS_FILE_CUSTOM_POLICY = """
from airflow.models.baseoperator import BaseOperator
from airflow.exceptions import AirflowClusterPolicyViolation
def task_must_have_owners(task: BaseOperator):
if not task.owner or task.owner.lower() == "airflow":
raise AirflowClusterPolicyViolation(
f'''Task must have non-None non-'airflow' owner.
Current value: {task.owner}'''
)
"""
class SettingsContext:
def __init__(self, content: str, module_name: str):
self.content = content
self.settings_root = tempfile.mkdtemp()
filename = "{}.py".format(module_name)
self.settings_file = os.path.join(self.settings_root, filename)
def __enter__(self):
with open(self.settings_file, 'w') as handle:
handle.writelines(self.content)
sys.path.append(self.settings_root)
return self.settings_file
def __exit__(self, *exc_info):
sys.path.remove(self.settings_root)
class TestLocalSettings(unittest.TestCase):
# Make sure that the configure_logging is not cached
def setUp(self):
self.old_modules = dict(sys.modules)
def tearDown(self):
# Remove any new modules imported during the test run. This lets us
# import the same source files for more than one test.
for mod in [m for m in sys.modules if m not in self.old_modules]:
del sys.modules[mod]
@unittest.mock.patch("airflow.settings.import_local_settings")
@unittest.mock.patch("airflow.settings.prepare_syspath")
def test_initialize_order(self, prepare_syspath, import_local_settings):
"""
Tests that import_local_settings is called after prepare_classpath
"""
mock = unittest.mock.Mock()
mock.attach_mock(prepare_syspath, "prepare_syspath")
mock.attach_mock(import_local_settings, "import_local_settings")
import airflow.settings
airflow.settings.initialize()
mock.assert_has_calls([call.prepare_syspath(), call.import_local_settings()])
def test_import_with_dunder_all_not_specified(self):
"""
Tests that if __all__ is specified in airflow_local_settings,
only module attributes specified within are imported.
"""
with SettingsContext(SETTINGS_FILE_POLICY_WITH_DUNDER_ALL, "airflow_local_settings"):
from airflow import settings
settings.import_local_settings()
with self.assertRaises(AttributeError):
settings.not_policy() # pylint: disable=no-member
def test_import_with_dunder_all(self):
"""
Tests that if __all__ is specified in airflow_local_settings,
only module attributes specified within are imported.
"""
with SettingsContext(SETTINGS_FILE_POLICY_WITH_DUNDER_ALL, "airflow_local_settings"):
from airflow import settings
settings.import_local_settings()
task_instance = MagicMock()
settings.test_policy(task_instance) # pylint: disable=no-member
assert task_instance.run_as_user == "myself"
@unittest.mock.patch("airflow.settings.log.debug")
def test_import_local_settings_without_syspath(self, log_mock):
"""
Tests that an ImportError is raised in import_local_settings
if there is no airflow_local_settings module on the syspath.
"""
from airflow import settings
settings.import_local_settings()
log_mock.assert_called_once_with("Failed to import airflow_local_settings.", exc_info=True)
def test_policy_function(self):
"""
Tests that task instances are mutated by the policy
function in airflow_local_settings.
"""
with SettingsContext(SETTINGS_FILE_POLICY, "airflow_local_settings"):
from airflow import settings
settings.import_local_settings()
task_instance = MagicMock()
settings.test_policy(task_instance) # pylint: disable=no-member
assert task_instance.run_as_user == "myself"
def test_pod_mutation_hook(self):
"""
Tests that pods are mutated by the pod_mutation_hook
function in airflow_local_settings.
"""
with SettingsContext(SETTINGS_FILE_POD_MUTATION_HOOK, "airflow_local_settings"):
from airflow import settings
settings.import_local_settings()
pod = MagicMock()
settings.pod_mutation_hook(pod)
assert pod.namespace == 'airflow-tests'
def test_custom_policy(self):
with SettingsContext(SETTINGS_FILE_CUSTOM_POLICY, "airflow_local_settings"):
from airflow import settings
settings.import_local_settings()
task_instance = MagicMock()
task_instance.owner = 'airflow'
with self.assertRaises(AirflowClusterPolicyViolation):
settings.task_must_have_owners(task_instance) # pylint: disable=no-member