53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
# 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 mock
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import testtools
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from oslo_config import cfg
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from oslo_config import fixture as config_fixture
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from placement import db_api
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CONF = cfg.CONF
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class DbApiTests(testtools.TestCase):
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def setUp(self):
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super(DbApiTests, self).setUp()
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self.conf_fixture = self.useFixture(config_fixture.Config(CONF))
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db_api.configure.reset()
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@mock.patch.object(db_api.placement_context_manager, "configure")
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def test_can_call_configure_twice(self, configure_mock):
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"""This test asserts that configure can be safely called twice
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which may happen if placement is run under mod_wsgi and the
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wsgi application is reloaded.
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"""
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db_api.configure(self.conf_fixture.conf)
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configure_mock.assert_called_once()
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# a second invocation of configure on a transaction context
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# should raise an exception so mock this and assert its not
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# called on a second invocation of db_api's configure function
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configure_mock.side_effect = TypeError()
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db_api.configure(self.conf_fixture.conf)
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# Note we have not reset the mock so it should
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# have been called once from the first invocation of
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# db_api.configure and the second invocation should not
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# have called it again
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configure_mock.assert_called_once()
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