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Diffstat (limited to 'docs/testing/developer/devguide/devguide.rst')
| -rwxr-xr-x | docs/testing/developer/devguide/devguide.rst | 150 |
1 files changed, 145 insertions, 5 deletions
diff --git a/docs/testing/developer/devguide/devguide.rst b/docs/testing/developer/devguide/devguide.rst index 91f2c2148..76ed7c651 100755 --- a/docs/testing/developer/devguide/devguide.rst +++ b/docs/testing/developer/devguide/devguide.rst @@ -47,7 +47,7 @@ your field of interest is. Where can I find some help to start? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -.. _`user guide`: http://artifacts.opnfv.org/yardstick/danube/1.0/docs/stesting_user_userguide/index.html +.. _`user guide`: https://artifacts.opnfv.org/yardstick/docs/testing_user_userguide/index.html .. _`wiki page`: https://wiki.opnfv.org/display/yardstick/ This guide is made for you. You can have a look at the `user guide`_. @@ -401,7 +401,7 @@ Gerrit & JIRA introduction ++++++++++++++++++++++++++ .. _Gerrit: https://www.gerritcodereview.com/ -.. _`OPNFV Gerrit`: http://gerrit.opnfv.org/ +.. _`OPNFV Gerrit`: http://gerrit.opnfv.org/gerrit .. _link: https://identity.linuxfoundation.org/ .. _JIRA: https://jira.opnfv.org/secure/Dashboard.jspa @@ -449,6 +449,10 @@ Verify your patch:: It is used in CI but also by the CLI. +For more details on ``tox`` and tests, please refer to the `Running tests`_ +and `working with tox`_ sections below, which describe the different available +environments. + Submit the code with Git ++++++++++++++++++++++++ @@ -481,7 +485,7 @@ Git repository:: JIRA: YARDSTICK-XXX -.. _`this document`: http://chris.beams.io/posts/git-commit/ +.. _`this document`: https://chris.beams.io/posts/git-commit/ The message that is required for the commit should follow a specific set of rules. This practice allows to standardize the description messages attached @@ -506,8 +510,8 @@ Yardstick committers and contributors to review your codes. :alt: Gerrit for code review You can find a list Yardstick people -`here <https://wiki.opnfv.org/display/yardstick/People>`_, or use the -``yardstick-reviewers`` and ``yardstick-committers`` groups in gerrit. +`here <https://wiki.opnfv.org/display/yardstick/Yardstick+People>`_, or use +the ``yardstick-reviewers`` and ``yardstick-committers`` groups in gerrit. Modify the code under review in Gerrit ++++++++++++++++++++++++++++++++++++++ @@ -566,6 +570,142 @@ The process for backporting is as follows: A backported change needs a ``+1`` and a ``+2`` from a committer who didn’t propose the change (i.e. minimum 3 people involved). +Development guidelines +---------------------- +This section provides guidelines and best practices for feature development +and bug fixing in Yardstick. + +In general, bug fixes should be submitted as a single patch. + +When developing larger features, all commits on the local topic branch can be +submitted together, by running ``git review`` on the tip of the branch. This +creates a chain of related patches in gerrit. + +Each commit should contain one logical change and the author should aim for no +more than 300 lines of code per commit. This helps to make the changes easier +to review. + +Each feature should have the following: + +* Feature/bug fix code +* Unit tests (both positive and negative) +* Functional tests (optional) +* Sample testcases (if applicable) +* Documentation +* Update to release notes + +Coding style +~~~~~~~~~~~~ +.. _`OpenStack Style Guidelines`: https://docs.openstack.org/hacking/latest/user/hacking.html +.. _`OPNFV coding guidelines`: https://wiki.opnfv.org/display/DEV/Contribution+Guidelines + +Please follow the `OpenStack Style Guidelines`_ for code contributions (the +section on Internationalization (i18n) Strings is not applicable). + +When writing commit message, the `OPNFV coding guidelines`_ on git commit +message style should also be used. + +Running tests +~~~~~~~~~~~~~ +Once your patch has been submitted, a number of tests will be run by Jenkins +CI to verify the patch. Before submitting your patch, you should run these +tests locally. You can do this using ``tox``, which has a number of different +test environments defined in ``tox.ini``. +Calling ``tox`` without any additional arguments runs the default set of +tests (unit tests, functional tests, coverage and pylint). + +If some tests are failing, you can save time and select test environments +individually, by passing one or more of the following command-line options to +``tox``: + +* ``-e py27``: Unit tests using Python 2.7 +* ``-e py3``: Unit tests using Python 3 +* ``-e pep8``: Linter and style checks on updated files +* ``-e functional``: Functional tests using Python 2.7 +* ``-e functional-py3``: Functional tests using Python 3 +* ``-e coverage``: Code coverage checks + +.. note:: You need to stage your changes prior to running coverage for those + changes to be checked. + +In addition to the tests run by Jenkins (listed above), there are a number of +other test environments defined. + +* ``-e pep8-full``: Linter and style checks are run on the whole repo (not + just on updated files) +* ``-e os-requirements``: Check that the requirements are compatible with + OpenStack requirements. + +Working with tox +++++++++++++++++ +.. _virtualenv: https://virtualenv.pypa.io/en/stable/ + +``tox`` uses `virtualenv`_ to create isolated Python environments to run the +tests in. The test environments are located at +``.tox/<environment_name>`` e.g. ``.tox/py27``. + +If requirements are changed, you will need to recreate the tox test +environment to make sure the new requirements are installed. This is done by +passing the additional ``-r`` command-line option to ``tox``:: + + tox -r -e ... + +This can also be achieved by deleting the test environments manually before +running ``tox``:: + + rm -rf .tox/<environment_name> + rm -rf .tox/py27 + +Writing unit tests +~~~~~~~~~~~~~~~~~~ +For each change submitted, a set of unit tests should be submitted, which +should include both positive and negative testing. + +In order to help identify which tests are needed, follow the guidelines below. + +* In general, there should be a separate test for each branching point, return + value and input set. +* Negative tests should be written to make sure exceptions are raised and/or + handled appropriately. + +The following convention should be used for naming tests:: + + test_<method_name>_<some_comment> + +The comment gives more information on the nature of the test, the side effect +being checked, or the parameter being modified:: + + test_my_method_runtime_error + test_my_method_invalid_credentials + test_my_method_param1_none + +Mocking ++++++++ +The ``mock`` library is used for unit testing to stub out external libraries. + +The following conventions are used in Yardstick: + +* Use ``mock.patch.object`` instead of ``mock.patch``. + +* When naming mocked classes/functions, use ``mock_<class_and_function_name>`` + e.g. ``mock_subprocess_call`` + +* Avoid decorating classes with mocks. Apply the mocking in ``setUp()``:: + + @mock.patch.object(ssh, 'SSH') + class MyClassTestCase(unittest.TestCase): + + should be:: + + class MyClassTestCase(unittest.TestCase): + def setUp(self): + self._mock_ssh = mock.patch.object(ssh, 'SSH') + self.mock_ssh = self._mock_ssh.start() + + self.addCleanup(self._stop_mocks) + + def _stop_mocks(self): + self._mock_ssh.stop() Plugins ------- |