107 lines
2.7 KiB
ReStructuredText
107 lines
2.7 KiB
ReStructuredText
.. _running-tests:
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=============
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Running tests
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=============
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Kolla-ansible contains a suit of tests in the ``tests`` directory.
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Any proposed code change in gerrit is automatically rejected by the OpenStack
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Jenkins server [#f1]_ if the change causes test failures.
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It is recommended for developers to run the test suite before submitting patch
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for review. This allows to catch errors as early as possible.
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Preferred way to run the tests
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The preferred way to run the unit tests is using ``tox``. It executes tests in
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isolated environment, by creating separate virtualenv and installing
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dependencies from the ``requirements.txt`` and ``test-requirements.txt`` files,
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so the only package you install is ``tox`` itself:
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.. code-block:: console
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$ pip install tox
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See `the unit testing section of the Testing wiki page`_ for more information.
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Following are some simple examples.
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To run the Python 2.7 tests:
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.. code-block:: console
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$ tox -e py27
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To run the style tests:
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.. code-block:: console
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$ tox -e pep8
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To run multiple tests separate items by commas:
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.. code-block:: console
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$ tox -e py27,py34,pep8
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.. _the unit testing section of the Testing wiki page: https://wiki.openstack.org/wiki/Testing#Unit_Tests
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Running a subset of tests
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-------------------------
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Instead of running all tests, you can specify an individual directory, file,
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class or method that contains test code, i.e. filter full names of tests by a
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string.
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To run the tests located only in the ``kolla-ansible/tests``
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directory use:
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.. code-block:: console
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$ tox -e py27 kolla-ansible.tests
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To run the tests of a specific file
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say ``kolla-ansible/tests/test_kolla_docker.py``:
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.. code-block:: console
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$ tox -e py27 test_kolla_docker
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To run the tests in the ``ModuleArgsTest`` class in
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the ``kolla-ansible/tests/test_kolla_docker.py`` file:
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.. code-block:: console
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$ tox -e py27 test_kolla_docker.ModuleArgsTest
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To run the ``ModuleArgsTest.test_module_args`` test method in
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the ``kolla-ansible/tests/test_kolla_docker.py`` file:
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.. code-block:: console
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$ tox -e py27 test_kolla_docker.ModuleArgsTest.test_module_args
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Debugging unit tests
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------------------------
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In order to break into the debugger from a unit test we need to insert
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a breaking point to the code:
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.. code-block:: python
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import pdb; pdb.set_trace()
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Then run ``tox`` with the debug environment as one of the following::
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tox -e debug
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tox -e debug test_file_name.TestClass.test_name
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For more information see the `oslotest documentation
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<https://docs.openstack.org/oslotest/latest/user/features.html#debugging-with-oslo-debug-helper>`_.
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.. rubric:: Footnotes
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.. [#f1] See https://docs.openstack.org/infra/system-config/jjb.html
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