Add Designate Tempest Docs
Add initial docs for writing tempest tests Change-Id: Ia562850049ae5f1b796613967a33c50ddcf2772d
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Kiall Mac Innes
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@ -58,6 +58,7 @@ Reference Documentation
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designate-manage
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rest
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devstack
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tempest
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related
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glossary
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backends
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251
doc/source/tempest.rst
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251
doc/source/tempest.rst
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..
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Copyright 2016 Hewlett Packard Enterprise Development Company, L.P.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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.. _tempest:
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=======
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Tempest
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=======
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The Designate team maintains a set of tempest tests to exercise the Designate
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service and APIs.
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Intro and References
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====================
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* `Tempest Docs`_ - Tempest docs
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* `Tempest HACKING`_ - General tempest style and coding guidelines
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* `Tempest Plugins`_ - Tempest Test Plugin Interface guide
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Quick Start
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===========
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To run all tests from this plugin, install the plugin into your environment
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and from the tempest repo, run::
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$ tox -e all-plugin -- designate
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To run a single test case, run with the test case name, for example::
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$ tox -e all-plugin -- designate_tempest_plugin.tests.api.v2.test_zones.ZonesAdminTest.test_get_other_tenant_zone
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To run all tempest tests including this plugin, run::
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$ tox -e all-plugin
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Writing new tests
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=================
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Writing new tests is easy, and we encourage contributers to write tests for
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any new or changed functionality. Most of the patterns you will find in the
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Designate tests will look familar if you have contributed to tempest, so rather
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than re-type all their docs here, please have a read of the `Tempest Docs`_.
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Test Clients
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------------
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In Tempest tests, it is forbidden to use a services python bindings or client,
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as doing so would allow API changes to go unnoticed when the server and client
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are updated. As such, each service is expected to have a minimal in-tree
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client. Designate's client can be found in:
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.. code-block:: bash
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$ tree -P "*_client.py" designate_tempest_plugin/services/dns/
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designate_tempest_plugin/services/dns/
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├── json
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│ └── versions_client.py
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└── v2
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└── json
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├── recordsets_client.py
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└── zones_client.py
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An example client, in this case for a subset of /v2/zones is included below:
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.. code-block:: python
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class ZonesClient(base.DnsClientV2Base):
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"""API V2 Tempest REST client for Designate API"""
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@base.handle_errors
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def create_zone(self, name=None, email=None, ttl=None, description=None,
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wait_until=False, params=None):
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"""Create a zone with the specified parameters.
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:param name: The name of the zone.
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Default: Random Value
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:param email: The email for the zone.
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Default: Random Value
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:param ttl: The ttl for the zone.
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Default: Random Value
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:param description: A description of the zone.
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Default: Random Value
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:param wait_until: Block until the zone reaches the desiered status
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:param params: A Python dict that represents the query paramaters to
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include in the request URI.
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:return: A tuple with the server response and the created zone.
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"""
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zone = {
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'name': name or dns_data_utils.rand_zone_name(),
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'email': email or dns_data_utils.rand_email(),
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'ttl': ttl or dns_data_utils.rand_ttl(),
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'description': description or data_utils.rand_name('test-zone'),
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}
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resp, body = self._create_request('zones', zone, params=params)
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if wait_until:
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waiters.wait_for_zone_status(self, body['id'], wait_until)
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return resp, body
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Some items to note, client methods should be wrapped in the
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`base.handle_errors` decorator, which is used to allow for ignoring certain
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types of errors, in certain cases. Most commonly, this will be ignoring 404's
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when cleaning up resources.
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Test Cases
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----------
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Designate's tests can be found in:
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.. code-block:: bash
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$ tree -P "test_*.py" designate_tempest_plugin/tests/
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designate_tempest_plugin/tests/
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├── api
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│ ├── test_versions.py
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│ └── v2
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│ ├── test_recordsets.py
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│ └── test_zones.py
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└── scenario
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An example test, in this case for a subset of /v2/zones functionality is
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included below:
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.. code-block:: python
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class ZonesTest(BaseZonesTest):
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@classmethod
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def setup_clients(cls):
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super(ZonesTest, cls).setup_clients()
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cls.client = cls.os.zones_client
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@test.attr(type='smoke')
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@test.idempotent_id('fbabd6af-238a-462e-b923-de4d736b90a7')
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def test_create_zone(self):
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LOG.info('Create a zone')
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_, zone = self.client.create_zone()
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self.addCleanup(self.client.delete_zone, zone['id'])
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LOG.info('Ensure we respond with CREATE+PENDING')
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self.assertEqual('CREATE', zone['action'])
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self.assertEqual('PENDING', zone['status'])
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waiters.wait_for_zone_status(
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self.client, zone['id'], 'ACTIVE')
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LOG.info('Re-Fetch the zone')
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_, body = self.client.show_zone(zone['id'])
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LOG.info('Ensure the fetched response matches the created zone')
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self._assertExpected(zone, body)
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Test Cases - Alternative Credentials
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------------------------------------
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Some tests require more than just a "standard" cloud user, e.g. those tests
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checking admin only functionality. We can ensure both user and admin
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credentials are available using the class level "credentials" property like so:
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.. code-block:: python
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class ZonesAdminTest(BaseZonesTest):
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credentials = ['primary', 'admin']
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@classmethod
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def setup_clients(cls):
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super(ZonesAdminTest, cls).setup_clients()
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cls.client = cls.os.zones_client
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cls.adm_client = cls.os_adm.zones_client
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@test.idempotent_id('6477f92d-70ba-46eb-bd6c-fc50c405e222')
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def test_get_other_tenant_zone(self):
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LOG.info('Create a zone as a user')
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_, zone = self.client.create_zone()
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self.addCleanup(self.client.delete_zone, zone['id'])
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LOG.info('Fetch the zone as an admin')
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_, body = self.adm_client.show_zone(
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zone['id'], params={'all_tenants': True})
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LOG.info('Ensure the fetched response matches the created zone')
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self._assertExpected(zone, body)
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Test Decorators
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---------------
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Several different test decorators are used within the test cases, this attempts
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to explain their purpose and correct usage.
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@test.idempotent_id
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~~~~~~~~~~~~~~~~~~~
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The `idempotent_id` decorator allows for tracking of tests even after they have
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been renamed. The UUID should be randomly generated as the test is first
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written, e.g. with `uuidgen` on most linux hosts, and should not be changed
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when the test is renamed.
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Every test should have a unique idempotent_id assigned.
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Example:
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.. code-block:: python
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class ZonesTest(BaseZonesTest):
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@test.idempotent_id('fbabd6af-238a-462e-b923-de4d736b90a7')
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def test_create_zone(self):
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pass
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@test.attr
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~~~~~~~~~~
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The `attr` decorator is used to set test attributes, this is most commonly used
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to set the test type. Currently, we use one test type "smoke", which should be
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applied to any tests which test the most basic functionaility Designate
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provides, allowing for the core functionaility to be tested quickly, without
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having to run the entire suite.
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Example:
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.. code-block:: python
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class ZonesTest(BaseZonesTest):
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@test.attr(type='smoke')
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def test_create_zone(self):
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pass
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.. _Tempest Docs: http://docs.openstack.org/developer/tempest/
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.. _Tempest HACKING: http://docs.openstack.org/developer/tempest/HACKING.html
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.. _Tempest Plugins: http://docs.openstack.org/developer/tempest/plugin.html
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