674 lines
26 KiB
Python
674 lines
26 KiB
Python
# Copyright 2012 New Dream Network, LLC (DreamHost)
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import copy
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import os
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import sys
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import textwrap
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from alembic.autogenerate import api as alembic_ag_api
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from alembic import config as alembic_config
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from alembic.operations import ops as alembic_ops
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import fixtures
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import mock
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import pkg_resources
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import sqlalchemy as sa
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from neutron.common import utils
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from neutron.db import migration
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from neutron.db.migration import autogen
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from neutron.db.migration import cli
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from neutron.tests import base
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from neutron.tests.unit import testlib_api
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class FakeConfig(object):
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service = ''
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class FakeRevision(object):
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path = 'fakepath'
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def __init__(self, labels=None, down_revision=None):
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if not labels:
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labels = set()
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self.branch_labels = labels
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self.down_revision = down_revision
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self.revision = utils.get_random_string(10)
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self.module = mock.MagicMock()
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class MigrationEntrypointsMemento(fixtures.Fixture):
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'''Create a copy of the migration entrypoints map so it can be restored
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during test cleanup.
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'''
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def _setUp(self):
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self.ep_backup = {}
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for proj, ep in cli.migration_entrypoints.items():
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self.ep_backup[proj] = copy.copy(ep)
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self.addCleanup(self.restore)
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def restore(self):
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cli.migration_entrypoints = self.ep_backup
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class TestDbMigration(base.BaseTestCase):
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def setUp(self):
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super(TestDbMigration, self).setUp()
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mock.patch('alembic.op.get_bind').start()
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self.mock_alembic_is_offline = mock.patch(
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'alembic.context.is_offline_mode', return_value=False).start()
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self.mock_alembic_is_offline.return_value = False
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self.mock_sa_inspector = mock.patch(
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'sqlalchemy.engine.reflection.Inspector').start()
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def _prepare_mocked_sqlalchemy_inspector(self):
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mock_inspector = mock.MagicMock()
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mock_inspector.get_table_names.return_value = ['foo', 'bar']
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mock_inspector.get_columns.return_value = [{'name': 'foo_column'},
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{'name': 'bar_column'}]
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self.mock_sa_inspector.from_engine.return_value = mock_inspector
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def test_schema_has_table(self):
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self._prepare_mocked_sqlalchemy_inspector()
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self.assertTrue(migration.schema_has_table('foo'))
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def test_schema_has_table_raises_if_offline(self):
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self.mock_alembic_is_offline.return_value = True
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self.assertRaises(RuntimeError, migration.schema_has_table, 'foo')
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def test_schema_has_column_missing_table(self):
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self._prepare_mocked_sqlalchemy_inspector()
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self.assertFalse(migration.schema_has_column('meh', 'meh'))
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def test_schema_has_column(self):
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self._prepare_mocked_sqlalchemy_inspector()
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self.assertTrue(migration.schema_has_column('foo', 'foo_column'))
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def test_schema_has_column_raises_if_offline(self):
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self.mock_alembic_is_offline.return_value = True
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self.assertRaises(RuntimeError, migration.schema_has_column,
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'foo', 'foo_col')
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def test_schema_has_column_missing_column(self):
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self._prepare_mocked_sqlalchemy_inspector()
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self.assertFalse(migration.schema_has_column(
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'foo', column_name='meh'))
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class TestCli(base.BaseTestCase):
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def setUp(self):
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super(TestCli, self).setUp()
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self.do_alembic_cmd_p = mock.patch.object(cli, 'do_alembic_command')
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self.do_alembic_cmd = self.do_alembic_cmd_p.start()
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self.mock_alembic_err = mock.patch('alembic.util.err').start()
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self.mock_alembic_err.side_effect = SystemExit
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def mocked_root_dir(cfg):
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return os.path.join('/fake/dir', cli._get_project_base(cfg))
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mock_root = mock.patch.object(cli, '_get_package_root_dir').start()
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mock_root.side_effect = mocked_root_dir
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# Avoid creating fake directories
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mock.patch('neutron.common.utils.ensure_dir').start()
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# Set up some configs and entrypoints for tests to chew on
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self.configs = []
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self.projects = ('neutron', 'networking-foo', 'neutron-fwaas')
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ini = os.path.join(os.path.dirname(cli.__file__), 'alembic.ini')
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self.useFixture(MigrationEntrypointsMemento())
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cli.migration_entrypoints = {}
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for project in self.projects:
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config = alembic_config.Config(ini)
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config.set_main_option('neutron_project', project)
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module_name = project.replace('-', '_') + '.db.migration'
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attrs = ('alembic_migrations',)
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script_location = ':'.join([module_name, attrs[0]])
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config.set_main_option('script_location', script_location)
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self.configs.append(config)
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entrypoint = pkg_resources.EntryPoint(project,
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module_name,
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attrs=attrs)
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cli.migration_entrypoints[project] = entrypoint
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def _main_test_helper(self, argv, func_name, exp_kwargs=[{}]):
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with mock.patch.object(sys, 'argv', argv),\
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mock.patch.object(cli, 'run_sanity_checks'),\
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mock.patch.object(cli, 'validate_labels'):
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cli.main()
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self.do_alembic_cmd.assert_has_calls(
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[mock.call(mock.ANY, func_name, **kwargs)
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for kwargs in exp_kwargs]
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)
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def test_stamp(self):
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self._main_test_helper(
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['prog', 'stamp', 'foo'],
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'stamp',
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[{'revision': 'foo', 'sql': False}]
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)
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self._main_test_helper(
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['prog', 'stamp', 'foo', '--sql'],
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'stamp',
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[{'revision': 'foo', 'sql': True}]
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)
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def test_current(self):
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self._main_test_helper(['prog', 'current'], 'current')
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def test_history(self):
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self._main_test_helper(['prog', 'history'], 'history')
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def test_check_migration(self):
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with mock.patch.object(cli, 'validate_heads_file') as validate:
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self._main_test_helper(['prog', 'check_migration'], 'branches')
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self.assertEqual(len(self.projects), validate.call_count)
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def _test_database_sync_revision(self, separate_branches=True):
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with mock.patch.object(cli, 'update_heads_file') as update,\
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mock.patch.object(cli, '_use_separate_migration_branches',
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return_value=separate_branches):
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if separate_branches:
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mock.patch('os.path.exists').start()
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expected_kwargs = [{
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'message': 'message', 'sql': False, 'autogenerate': True,
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}]
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self._main_test_helper(
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['prog', 'revision', '--autogenerate', '-m', 'message'],
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'revision',
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expected_kwargs
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)
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self.assertEqual(len(self.projects), update.call_count)
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update.reset_mock()
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for kwarg in expected_kwargs:
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kwarg['autogenerate'] = False
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kwarg['sql'] = True
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self._main_test_helper(
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['prog', 'revision', '--sql', '-m', 'message'],
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'revision',
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expected_kwargs
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)
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self.assertEqual(len(self.projects), update.call_count)
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update.reset_mock()
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for kwarg in expected_kwargs:
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kwarg['sql'] = False
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kwarg['head'] = 'expand@head'
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self._main_test_helper(
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['prog', 'revision', '-m', 'message', '--expand'],
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'revision',
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expected_kwargs
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)
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self.assertEqual(len(self.projects), update.call_count)
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update.reset_mock()
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for kwarg in expected_kwargs:
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kwarg['head'] = 'contract@head'
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self._main_test_helper(
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['prog', 'revision', '-m', 'message', '--contract'],
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'revision',
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expected_kwargs
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)
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self.assertEqual(len(self.projects), update.call_count)
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def test_database_sync_revision(self):
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self._test_database_sync_revision()
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def test_database_sync_revision_no_branches(self):
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# Test that old branchless approach is still supported
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self._test_database_sync_revision(separate_branches=False)
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def test_upgrade_revision(self):
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self._main_test_helper(
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['prog', 'upgrade', '--sql', 'head'],
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'upgrade',
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[{'desc': None, 'revision': 'heads', 'sql': True}]
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)
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def test_upgrade_delta(self):
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self._main_test_helper(
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['prog', 'upgrade', '--delta', '3'],
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'upgrade',
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[{'desc': None, 'revision': '+3', 'sql': False}]
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)
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def test_upgrade_revision_delta(self):
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self._main_test_helper(
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['prog', 'upgrade', 'kilo', '--delta', '3'],
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'upgrade',
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[{'desc': None, 'revision': 'kilo+3', 'sql': False}]
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)
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def test_upgrade_expand(self):
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self._main_test_helper(
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['prog', 'upgrade', '--expand'],
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'upgrade',
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[{'desc': cli.EXPAND_BRANCH,
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'revision': 'expand@head',
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'sql': False}]
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)
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def test_upgrade_expand_contract_are_mutually_exclusive(self):
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with testlib_api.ExpectedException(SystemExit):
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self._main_test_helper(
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['prog', 'upgrade', '--expand --contract'], 'upgrade')
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def _test_upgrade_conflicts_with_revision(self, mode):
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with testlib_api.ExpectedException(SystemExit):
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self._main_test_helper(
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['prog', 'upgrade', '--%s revision1' % mode], 'upgrade')
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def _test_upgrade_conflicts_with_delta(self, mode):
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with testlib_api.ExpectedException(SystemExit):
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self._main_test_helper(
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['prog', 'upgrade', '--%s +3' % mode], 'upgrade')
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def test_upgrade_expand_conflicts_with_revision(self):
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self._test_upgrade_conflicts_with_revision('expand')
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def test_upgrade_contract_conflicts_with_revision(self):
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self._test_upgrade_conflicts_with_revision('contract')
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def test_upgrade_expand_conflicts_with_delta(self):
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self._test_upgrade_conflicts_with_delta('expand')
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def test_upgrade_contract_conflicts_with_delta(self):
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self._test_upgrade_conflicts_with_delta('contract')
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def test_upgrade_contract(self):
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self._main_test_helper(
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['prog', 'upgrade', '--contract'],
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'upgrade',
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[{'desc': cli.CONTRACT_BRANCH,
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'revision': 'contract@head',
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'sql': False}]
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)
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def assert_command_fails(self, command):
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# Avoid cluttering stdout with argparse error messages
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mock.patch('argparse.ArgumentParser._print_message').start()
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with mock.patch.object(sys, 'argv', command), mock.patch.object(
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cli, 'run_sanity_checks'):
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self.assertRaises(SystemExit, cli.main)
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def test_downgrade_fails(self):
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self.assert_command_fails(['prog', 'downgrade', '--sql', 'juno'])
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def test_upgrade_negative_relative_revision_fails(self):
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self.assert_command_fails(['prog', 'upgrade', '-2'])
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def test_upgrade_negative_delta_fails(self):
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self.assert_command_fails(['prog', 'upgrade', '--delta', '-2'])
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def test_upgrade_rejects_delta_with_relative_revision(self):
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self.assert_command_fails(['prog', 'upgrade', '+2', '--delta', '3'])
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def _test_validate_heads_file_helper(self, heads, file_heads=None,
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branchless=False):
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if file_heads is None:
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file_heads = []
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fake_config = self.configs[0]
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with mock.patch('alembic.script.ScriptDirectory.from_config') as fc,\
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mock.patch.object(cli, '_use_separate_migration_branches',
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return_value=not branchless):
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fc.return_value.get_heads.return_value = heads
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with mock.patch.object(cli, 'open') as mock_open:
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mock_open.return_value.__enter__ = lambda s: s
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mock_open.return_value.__exit__ = mock.Mock()
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mock_open.return_value.read.return_value = (
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'\n'.join(file_heads))
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if all(head in file_heads for head in heads):
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cli.validate_heads_file(fake_config)
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else:
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self.assertRaises(
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SystemExit,
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cli.validate_heads_file,
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fake_config
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)
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self.assertTrue(self.mock_alembic_err.called)
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if branchless:
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mock_open.assert_called_with(
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cli._get_head_file_path(fake_config))
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else:
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mock_open.assert_called_with(
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cli._get_heads_file_path(fake_config))
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fc.assert_called_once_with(fake_config)
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def test_validate_heads_file_multiple_heads(self):
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self._test_validate_heads_file_helper(['a', 'b'])
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def test_validate_heads_file_missing_file(self):
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self._test_validate_heads_file_helper(['a'])
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def test_validate_heads_file_wrong_contents(self):
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self._test_validate_heads_file_helper(['a'], ['b'])
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def test_validate_heads_success(self):
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self._test_validate_heads_file_helper(['a'], ['a'])
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@mock.patch.object(cli, '_use_separate_migration_branches',
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return_value=False)
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def test_validate_heads_file_branchless_failure(self, *args):
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self._test_validate_heads_file_helper(['a'], ['b'], branchless=True)
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@mock.patch.object(cli, '_use_separate_migration_branches',
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return_value=False)
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def test_validate_heads_file_branchless_success(self, *args):
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self._test_validate_heads_file_helper(['a'], ['a'], branchless=True)
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def test_update_heads_file_two_heads(self):
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with mock.patch('alembic.script.ScriptDirectory.from_config') as fc:
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heads = ('b', 'a')
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fc.return_value.get_heads.return_value = heads
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with mock.patch('six.moves.builtins.open') as mock_open:
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mock_open.return_value.__enter__ = lambda s: s
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mock_open.return_value.__exit__ = mock.Mock()
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cli.update_heads_file(self.configs[0])
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mock_open.return_value.write.assert_called_once_with(
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'\n'.join(sorted(heads)))
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@mock.patch('os.path.exists')
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@mock.patch('os.remove')
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def test_update_heads_file_success(self, *os_mocks):
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with mock.patch('alembic.script.ScriptDirectory.from_config') as fc:
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heads = ('a', 'b')
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fc.return_value.get_heads.return_value = heads
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with mock.patch('six.moves.builtins.open') as mock_open:
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mock_open.return_value.__enter__ = lambda s: s
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mock_open.return_value.__exit__ = mock.Mock()
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cli.update_heads_file(self.configs[0])
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mock_open.return_value.write.assert_called_once_with(
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'\n'.join(heads))
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old_head_file = cli._get_head_file_path(self.configs[0])
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for mock_ in os_mocks:
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mock_.assert_called_with(old_head_file)
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def test_get_project_base(self):
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config = alembic_config.Config()
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config.set_main_option('script_location', 'a.b.c:d')
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proj_base = cli._get_project_base(config)
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self.assertEqual('a', proj_base)
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def test_get_root_versions_dir(self):
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config = alembic_config.Config()
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config.set_main_option('script_location', 'a.b.c:d')
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versions_dir = cli._get_root_versions_dir(config)
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self.assertEqual('/fake/dir/a/a/b/c/d/versions', versions_dir)
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def test_get_subproject_script_location(self):
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foo_ep = cli._get_subproject_script_location('networking-foo')
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expected = 'networking_foo.db.migration:alembic_migrations'
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self.assertEqual(expected, foo_ep)
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def test_get_subproject_script_location_not_installed(self):
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self.assertRaises(
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SystemExit, cli._get_subproject_script_location, 'not-installed')
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def test_get_service_script_location(self):
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fwaas_ep = cli._get_service_script_location('fwaas')
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expected = 'neutron_fwaas.db.migration:alembic_migrations'
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self.assertEqual(expected, fwaas_ep)
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def test_get_service_script_location_not_installed(self):
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self.assertRaises(
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SystemExit, cli._get_service_script_location, 'myaas')
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def test_get_subproject_base_not_installed(self):
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self.assertRaises(
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SystemExit, cli._get_subproject_base, 'not-installed')
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def test__compare_labels_ok(self):
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labels = {'label1', 'label2'}
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fake_revision = FakeRevision(labels)
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cli._compare_labels(fake_revision, {'label1', 'label2'})
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def test__compare_labels_fail_unexpected_labels(self):
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labels = {'label1', 'label2', 'label3'}
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fake_revision = FakeRevision(labels)
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self.assertRaises(
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SystemExit,
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cli._compare_labels, fake_revision, {'label1', 'label2'})
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@mock.patch.object(cli, '_compare_labels')
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def test__validate_single_revision_labels_branchless_fail_different_labels(
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self, compare_mock):
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fake_down_revision = FakeRevision()
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fake_revision = FakeRevision(down_revision=fake_down_revision)
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script_dir = mock.Mock()
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script_dir.get_revision.return_value = fake_down_revision
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cli._validate_single_revision_labels(script_dir, fake_revision,
|
|
label=None)
|
|
|
|
expected_labels = set()
|
|
compare_mock.assert_has_calls(
|
|
[mock.call(revision, expected_labels)
|
|
for revision in (fake_revision, fake_down_revision)]
|
|
)
|
|
|
|
@mock.patch.object(cli, '_compare_labels')
|
|
def test__validate_single_revision_labels_branches_fail_different_labels(
|
|
self, compare_mock):
|
|
|
|
fake_down_revision = FakeRevision()
|
|
fake_revision = FakeRevision(down_revision=fake_down_revision)
|
|
|
|
script_dir = mock.Mock()
|
|
script_dir.get_revision.return_value = fake_down_revision
|
|
cli._validate_single_revision_labels(
|
|
script_dir, fake_revision, label='fakebranch')
|
|
|
|
expected_labels = {'fakebranch'}
|
|
compare_mock.assert_has_calls(
|
|
[mock.call(revision, expected_labels)
|
|
for revision in (fake_revision, fake_down_revision)]
|
|
)
|
|
|
|
@mock.patch.object(cli, '_validate_single_revision_labels')
|
|
def test__validate_revision_validates_branches(self, validate_mock):
|
|
script_dir = mock.Mock()
|
|
fake_revision = FakeRevision()
|
|
branch = cli.MIGRATION_BRANCHES[0]
|
|
fake_revision.path = os.path.join('/fake/path', branch)
|
|
cli._validate_revision(script_dir, fake_revision)
|
|
validate_mock.assert_called_with(
|
|
script_dir, fake_revision, label=branch)
|
|
|
|
@mock.patch.object(cli, '_validate_single_revision_labels')
|
|
def test__validate_revision_validates_branchless_migrations(
|
|
self, validate_mock):
|
|
|
|
script_dir = mock.Mock()
|
|
fake_revision = FakeRevision()
|
|
cli._validate_revision(script_dir, fake_revision)
|
|
validate_mock.assert_called_with(script_dir, fake_revision)
|
|
|
|
@mock.patch.object(cli, '_validate_revision')
|
|
@mock.patch('alembic.script.ScriptDirectory.walk_revisions')
|
|
def test_validate_labels_walks_thru_all_revisions(
|
|
self, walk_mock, validate_mock):
|
|
|
|
revisions = [mock.Mock() for i in range(10)]
|
|
walk_mock.return_value = revisions
|
|
cli.validate_labels(self.configs[0])
|
|
validate_mock.assert_has_calls(
|
|
[mock.call(mock.ANY, revision) for revision in revisions]
|
|
)
|
|
|
|
@mock.patch.object(cli, '_use_separate_migration_branches')
|
|
@mock.patch.object(cli, '_get_version_branch_path')
|
|
def test_autogen_process_directives(
|
|
self,
|
|
get_version_branch_path,
|
|
use_separate_migration_branches):
|
|
|
|
use_separate_migration_branches.return_value = True
|
|
get_version_branch_path.side_effect = lambda cfg, branch: (
|
|
"/foo/expand" if branch == 'expand' else "/foo/contract")
|
|
|
|
migration_script = alembic_ops.MigrationScript(
|
|
'eced083f5df',
|
|
# these directives will be split into separate
|
|
# expand/contract scripts
|
|
alembic_ops.UpgradeOps(
|
|
ops=[
|
|
alembic_ops.CreateTableOp(
|
|
'organization',
|
|
[
|
|
sa.Column('id', sa.Integer(), primary_key=True),
|
|
sa.Column('name', sa.String(50), nullable=False)
|
|
]
|
|
),
|
|
alembic_ops.ModifyTableOps(
|
|
'user',
|
|
ops=[
|
|
alembic_ops.AddColumnOp(
|
|
'user',
|
|
sa.Column('organization_id', sa.Integer())
|
|
),
|
|
alembic_ops.CreateForeignKeyOp(
|
|
'org_fk', 'user', 'organization',
|
|
['organization_id'], ['id']
|
|
),
|
|
alembic_ops.DropConstraintOp(
|
|
'user', 'uq_user_org'
|
|
),
|
|
alembic_ops.DropColumnOp(
|
|
'user', 'organization_name'
|
|
)
|
|
]
|
|
)
|
|
]
|
|
),
|
|
# these will be discarded
|
|
alembic_ops.DowngradeOps(
|
|
ops=[
|
|
alembic_ops.AddColumnOp(
|
|
'user', sa.Column(
|
|
'organization_name', sa.String(50), nullable=True)
|
|
),
|
|
alembic_ops.CreateUniqueConstraintOp(
|
|
'uq_user_org', 'user',
|
|
['user_name', 'organization_name']
|
|
),
|
|
alembic_ops.ModifyTableOps(
|
|
'user',
|
|
ops=[
|
|
alembic_ops.DropConstraintOp('org_fk', 'user'),
|
|
alembic_ops.DropColumnOp('user', 'organization_id')
|
|
]
|
|
),
|
|
alembic_ops.DropTableOp('organization')
|
|
]
|
|
),
|
|
message='create the organization table and '
|
|
'replace user.organization_name'
|
|
)
|
|
|
|
directives = [migration_script]
|
|
autogen.process_revision_directives(
|
|
mock.Mock(), mock.Mock(), directives
|
|
)
|
|
|
|
expand = directives[0]
|
|
contract = directives[1]
|
|
self.assertEqual("/foo/expand", expand.version_path)
|
|
self.assertEqual("/foo/contract", contract.version_path)
|
|
self.assertTrue(expand.downgrade_ops.is_empty())
|
|
self.assertTrue(contract.downgrade_ops.is_empty())
|
|
|
|
self.assertEqual(
|
|
textwrap.dedent("""\
|
|
### commands auto generated by Alembic - please adjust! ###
|
|
op.create_table('organization',
|
|
sa.Column('id', sa.Integer(), nullable=False),
|
|
sa.Column('name', sa.String(length=50), nullable=False),
|
|
sa.PrimaryKeyConstraint('id')
|
|
)
|
|
op.add_column('user', """
|
|
"""sa.Column('organization_id', sa.Integer(), nullable=True))
|
|
op.create_foreign_key('org_fk', 'user', """
|
|
"""'organization', ['organization_id'], ['id'])
|
|
### end Alembic commands ###"""),
|
|
alembic_ag_api.render_python_code(expand.upgrade_ops)
|
|
)
|
|
self.assertEqual(
|
|
textwrap.dedent("""\
|
|
### commands auto generated by Alembic - please adjust! ###
|
|
op.drop_constraint('user', 'uq_user_org', type_=None)
|
|
op.drop_column('user', 'organization_name')
|
|
### end Alembic commands ###"""),
|
|
alembic_ag_api.render_python_code(contract.upgrade_ops)
|
|
)
|
|
|
|
@mock.patch('alembic.script.ScriptDirectory.walk_revisions')
|
|
def test__find_milestone_revisions_one_branch(self, walk_mock):
|
|
c_revs = [FakeRevision(labels={cli.CONTRACT_BRANCH}) for r in range(5)]
|
|
c_revs[1].module.neutron_milestone = [migration.LIBERTY]
|
|
|
|
walk_mock.return_value = c_revs
|
|
m = cli._find_milestone_revisions(self.configs[0], 'liberty',
|
|
cli.CONTRACT_BRANCH)
|
|
self.assertEqual(1, len(m))
|
|
m = cli._find_milestone_revisions(self.configs[0], 'liberty',
|
|
cli.EXPAND_BRANCH)
|
|
self.assertEqual(0, len(m))
|
|
|
|
@mock.patch('alembic.script.ScriptDirectory.walk_revisions')
|
|
def test__find_milestone_revisions_two_branches(self, walk_mock):
|
|
c_revs = [FakeRevision(labels={cli.CONTRACT_BRANCH}) for r in range(5)]
|
|
c_revs[1].module.neutron_milestone = [migration.LIBERTY]
|
|
e_revs = [FakeRevision(labels={cli.EXPAND_BRANCH}) for r in range(5)]
|
|
e_revs[3].module.neutron_milestone = [migration.LIBERTY]
|
|
|
|
walk_mock.return_value = c_revs + e_revs
|
|
m = cli._find_milestone_revisions(self.configs[0], 'liberty')
|
|
self.assertEqual(2, len(m))
|
|
|
|
m = cli._find_milestone_revisions(self.configs[0], 'mitaka')
|
|
self.assertEqual(0, len(m))
|
|
|
|
@mock.patch('alembic.script.ScriptDirectory.walk_revisions')
|
|
def test__find_milestone_revisions_branchless(self, walk_mock):
|
|
revisions = [FakeRevision() for r in range(5)]
|
|
revisions[2].module.neutron_milestone = [migration.LIBERTY]
|
|
|
|
walk_mock.return_value = revisions
|
|
m = cli._find_milestone_revisions(self.configs[0], 'liberty')
|
|
self.assertEqual(1, len(m))
|
|
|
|
m = cli._find_milestone_revisions(self.configs[0], 'mitaka')
|
|
self.assertEqual(0, len(m))
|
|
|
|
|
|
class TestSafetyChecks(base.BaseTestCase):
|
|
|
|
def test_validate_labels(self, *mocks):
|
|
cli.validate_labels(cli.get_neutron_config())
|