Andrey Kurilin
1b83b2f110
Replace common oslo code nova.openstack.common.db by usage of oslo.db library and remove common code. Replaced catching of raw sqlalchemy exceptions by catches of oslo.db exceptions(such as DBError, DBDuplicateEntry, etc). Co-Authored-By: Eugeniya Kudryashova <ekudryashova@mirantis.com> Closes-Bug: #1364986 Closes-Bug: #1353131 Closes-Bug: #1283987 Closes-Bug: #1274523 Change-Id: I0649539e071b2318ec85ed5d70259c949408e64b
98 lines
4.5 KiB
ReStructuredText
98 lines
4.5 KiB
ReStructuredText
Nova Style Commandments
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=======================
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- Step 1: Read the OpenStack Style Commandments
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http://docs.openstack.org/developer/hacking/
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- Step 2: Read on
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Nova Specific Commandments
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---------------------------
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- ``nova.db`` imports are not allowed in ``nova/virt/*``
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- [N309] no db session in public API methods (disabled)
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This enforces a guideline defined in ``oslo.db.sqlalchemy.session``
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- [N310] timeutils.utcnow() wrapper must be used instead of direct calls to
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datetime.datetime.utcnow() to make it easy to override its return value in tests
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- [N311] importing code from other virt drivers forbidden
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Code that needs to be shared between virt drivers should be moved
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into a common module
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- [N312] using config vars from other virt drivers forbidden
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Config parameters that need to be shared between virt drivers
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should be moved into a common module
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- [N313] capitalize help string
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Config parameter help strings should have a capitalized first letter
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- [N314] vim configuration should not be kept in source files.
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- [N315] We do not use @authors tags in source files. We have git to track
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authorship.
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- [N316] Change assertTrue(isinstance(A, B)) by optimal assert like
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assertIsInstance(A, B).
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- [N317] Change assertEqual(type(A), B) by optimal assert like
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assertIsInstance(A, B)
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- [N318] Change assertEqual(A, None) or assertEqual(None, A) by optimal assert like
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assertIsNone(A)
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- [N319] Validate that debug level logs are not translated.
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- [N320] Setting CONF.* attributes directly in tests is forbidden. Use
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self.flags(option=value) instead.
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- [N321] Validate that LOG messages, except debug ones, have translations
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- [N322] Method's default argument shouldn't be mutable
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- [N323] Ensure that the _() function is explicitly imported to ensure proper translations.
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- [N324] Ensure that jsonutils.%(fun)s must be used instead of json.%(fun)s
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- [N325] str() cannot be used on an exception. Remove use or use six.text_type()
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Creating Unit Tests
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-------------------
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For every new feature, unit tests should be created that both test and
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(implicitly) document the usage of said feature. If submitting a patch for a
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bug that had no unit test, a new passing unit test should be added. If a
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submitted bug fix does have a unit test, be sure to add a new one that fails
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without the patch and passes with the patch.
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For more information on creating unit tests and utilizing the testing
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infrastructure in OpenStack Nova, please read ``nova/tests/README.rst``.
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Running Tests
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-------------
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The testing system is based on a combination of tox and testr. The canonical
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approach to running tests is to simply run the command ``tox``. This will
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create virtual environments, populate them with dependencies and run all of
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the tests that OpenStack CI systems run. Behind the scenes, tox is running
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``testr run --parallel``, but is set up such that you can supply any additional
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testr arguments that are needed to tox. For example, you can run:
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``tox -- --analyze-isolation`` to cause tox to tell testr to add
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--analyze-isolation to its argument list.
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Python packages may also have dependencies that are outside of tox's ability
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to install. Please refer to doc/source/devref/development.environment.rst for
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a list of those packages on Ubuntu, Fedora and Mac OS X.
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It is also possible to run the tests inside of a virtual environment
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you have created, or it is possible that you have all of the dependencies
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installed locally already. In this case, you can interact with the testr
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command directly. Running ``testr run`` will run the entire test suite. ``testr
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run --parallel`` will run it in parallel (this is the default incantation tox
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uses.) More information about testr can be found at:
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http://wiki.openstack.org/testr
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Building Docs
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-------------
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Normal Sphinx docs can be built via the setuptools ``build_sphinx`` command. To
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do this via ``tox``, simply run ``tox -evenv -- python setup.py build_sphinx``,
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which will cause a virtualenv with all of the needed dependencies to be
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created and then inside of the virtualenv, the docs will be created and
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put into doc/build/html.
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If you'd like a PDF of the documentation, you'll need LaTeX installed, and
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additionally some fonts. On Ubuntu systems, you can get what you need with::
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apt-get install texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended
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Then run ``build_sphinx_latex``, change to the build dir and run ``make``.
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Like so::
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tox -evenv -- python setup.py build_sphinx_latex
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cd build/sphinx/latex
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make
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You should wind up with a PDF - Nova.pdf.
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