121 lines
5.9 KiB
ReStructuredText
121 lines
5.9 KiB
ReStructuredText
Nova Style Commandments
|
|
=======================
|
|
|
|
- Step 1: Read the OpenStack Style Commandments
|
|
http://docs.openstack.org/developer/hacking/
|
|
- Step 2: Read on
|
|
|
|
Nova Specific Commandments
|
|
---------------------------
|
|
|
|
- ``nova.db`` imports are not allowed in ``nova/virt/*``
|
|
- [N309] no db session in public API methods (disabled)
|
|
This enforces a guideline defined in ``oslo.db.sqlalchemy.session``
|
|
- [N310] timeutils.utcnow() wrapper must be used instead of direct calls to
|
|
datetime.datetime.utcnow() to make it easy to override its return value in tests
|
|
- [N311] importing code from other virt drivers forbidden
|
|
Code that needs to be shared between virt drivers should be moved
|
|
into a common module
|
|
- [N312] using config vars from other virt drivers forbidden
|
|
Config parameters that need to be shared between virt drivers
|
|
should be moved into a common module
|
|
- [N313] capitalize help string
|
|
Config parameter help strings should have a capitalized first letter
|
|
- [N314] vim configuration should not be kept in source files.
|
|
- [N316] Change assertTrue(isinstance(A, B)) by optimal assert like
|
|
assertIsInstance(A, B).
|
|
- [N317] Change assertEqual(type(A), B) by optimal assert like
|
|
assertIsInstance(A, B)
|
|
- [N318] Change assertEqual(A, None) or assertEqual(None, A) by optimal assert like
|
|
assertIsNone(A)
|
|
- [N319] Validate that debug level logs are not translated.
|
|
- [N320] Setting CONF.* attributes directly in tests is forbidden. Use
|
|
self.flags(option=value) instead.
|
|
- [N321] Validate that LOG messages, except debug ones, have translations
|
|
- [N322] Method's default argument shouldn't be mutable
|
|
- [N323] Ensure that the _() function is explicitly imported to ensure proper translations.
|
|
- [N324] Ensure that jsonutils.%(fun)s must be used instead of json.%(fun)s
|
|
- [N325] str() and unicode() cannot be used on an exception. Remove use or use six.text_type()
|
|
- [N326] Translated messages cannot be concatenated. String should be included in translated message.
|
|
- [N328] Validate that LOG.info messages use _LI.
|
|
- [N329] Validate that LOG.exception messages use _LE.
|
|
- [N330] Validate that LOG.warning and LOG.warn messages use _LW.
|
|
- [N332] Check that the api_version decorator is the first decorator on a method
|
|
- [N334] Change assertTrue/False(A in/not in B, message) to the more specific
|
|
assertIn/NotIn(A, B, message)
|
|
- [N335] Check for usage of deprecated assertRaisesRegexp
|
|
- [N336] Must use a dict comprehension instead of a dict constructor with a sequence of key-value pairs.
|
|
- [N337] Don't import translation in tests
|
|
- [N338] Change assertEqual(A in B, True), assertEqual(True, A in B),
|
|
assertEqual(A in B, False) or assertEqual(False, A in B) to the more specific
|
|
assertIn/NotIn(A, B)
|
|
- [N339] Check common raise_feature_not_supported() is used for v2.1 HTTPNotImplemented response.
|
|
- [N340] Check nova.utils.spawn() is used instead of greenthread.spawn() and eventlet.spawn()
|
|
|
|
Creating Unit Tests
|
|
-------------------
|
|
For every new feature, unit tests should be created that both test and
|
|
(implicitly) document the usage of said feature. If submitting a patch for a
|
|
bug that had no unit test, a new passing unit test should be added. If a
|
|
submitted bug fix does have a unit test, be sure to add a new one that fails
|
|
without the patch and passes with the patch.
|
|
|
|
For more information on creating unit tests and utilizing the testing
|
|
infrastructure in OpenStack Nova, please read ``nova/tests/unit/README.rst``.
|
|
|
|
|
|
Running Tests
|
|
-------------
|
|
The testing system is based on a combination of tox and testr. The canonical
|
|
approach to running tests is to simply run the command ``tox``. This will
|
|
create virtual environments, populate them with dependencies and run all of
|
|
the tests that OpenStack CI systems run. Behind the scenes, tox is running
|
|
``testr run --parallel``, but is set up such that you can supply any additional
|
|
testr arguments that are needed to tox. For example, you can run:
|
|
``tox -- --analyze-isolation`` to cause tox to tell testr to add
|
|
--analyze-isolation to its argument list.
|
|
|
|
Python packages may also have dependencies that are outside of tox's ability
|
|
to install. Please refer to ``doc/source/development.environment.rst`` for
|
|
a list of those packages on Ubuntu, Fedora and Mac OS X.
|
|
|
|
To run a single or restricted set of tests, pass a regex that matches
|
|
the class name containing the tests as an extra ``tox`` argument;
|
|
e.g. ``tox -- TestWSGIServer`` (note the double-hypen) will test all
|
|
WSGI server tests from ``nova/tests/unit/test_wsgi.py``; ``--
|
|
TestWSGIServer.test_uri_length_limit`` would run just that test, and
|
|
``-- TestWSGIServer|TestWSGIServerWithSSL`` would run tests from both
|
|
classes.
|
|
|
|
It is also possible to run the tests inside of a virtual environment
|
|
you have created, or it is possible that you have all of the dependencies
|
|
installed locally already. In this case, you can interact with the testr
|
|
command directly. Running ``testr run`` will run the entire test suite. ``testr
|
|
run --parallel`` will run it in parallel (this is the default incantation tox
|
|
uses.) More information about testr can be found at:
|
|
http://wiki.openstack.org/testr
|
|
|
|
Building Docs
|
|
-------------
|
|
Normal Sphinx docs can be built via the setuptools ``build_sphinx`` command. To
|
|
do this via ``tox``, simply run ``tox -e docs``,
|
|
which will cause a virtualenv with all of the needed dependencies to be
|
|
created and then inside of the virtualenv, the docs will be created and
|
|
put into doc/build/html.
|
|
|
|
Building a PDF of the Documentation
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
If you'd like a PDF of the documentation, you'll need LaTeX and ImageMagick
|
|
installed, and additionally some fonts. On Ubuntu systems, you can get what you
|
|
need with::
|
|
|
|
apt-get install texlive-full imagemagick
|
|
|
|
Then you can then use the ``build_latex_pdf.sh`` script in tools/ to take care
|
|
of both the the sphinx latex generation and the latex compilation. For example::
|
|
|
|
tools/build_latex_pdf.sh
|
|
|
|
The script must be run from the root of the Nova repository and it'll copy the
|
|
output pdf to Nova.pdf in that directory.
|