Hi Tales On 8/19/22 02:32, Tales Aparecida wrote: > Reword "Creating a ``.kunitconfig``" into "Selecting which tests to run" > covering the current alternatives for editing configs and glob-filtering > > Signed-off-by: Tales Aparecida <tales.aparecida@xxxxxxxxx> > --- > Documentation/dev-tools/kunit/start.rst | 90 +++++++++++++++++-------- > 1 file changed, 63 insertions(+), 27 deletions(-) > > diff --git a/Documentation/dev-tools/kunit/start.rst b/Documentation/dev-tools/kunit/start.rst > index e4b73adde6d0..f0ec64207bd3 100644 > --- a/Documentation/dev-tools/kunit/start.rst > +++ b/Documentation/dev-tools/kunit/start.rst > @@ -52,27 +52,20 @@ The tests will pass or fail. > For detailed information on this wrapper, see: > Documentation/dev-tools/kunit/run_wrapper.rst. > > -Creating a ``.kunitconfig`` > ---------------------------- > - > -By default, kunit_tool runs a selection of tests. However, you can specify which > -unit tests to run by creating a ``.kunitconfig`` file with kernel config options > -that enable only a specific set of tests and their dependencies. > -The ``.kunitconfig`` file contains a list of kconfig options which are required > -to run the desired targets. The ``.kunitconfig`` also contains any other test > -specific config options, such as test dependencies. For example: the > -``FAT_FS`` tests - ``FAT_KUNIT_TEST``, depends on > -``FAT_FS``. ``FAT_FS`` can be enabled by selecting either ``MSDOS_FS`` > -or ``VFAT_FS``. To run ``FAT_KUNIT_TEST``, the ``.kunitconfig`` has: > +Selecting which tests to run > +---------------------------- > > -.. code-block:: none > +By default, kunit_tool runs all tests reachable with minimal configuration, > +that is, using default values for most of the kconfig options. However, > +you can select which tests to run by: > > - CONFIG_KUNIT=y > - CONFIG_MSDOS_FS=y > - CONFIG_FAT_KUNIT_TEST=y > +- `Customizing Kconfig`_ used to compile the kernel, or > +- `Filtering tests by name`_ to select specifically which compiled tests to run. > > -1. A good starting point for the ``.kunitconfig`` is the KUnit default config. > - You can generate it by running: > +Customizing Kconfig > +~~~~~~~~~~~~~~~~~~~ > +A good starting point for the ``.kunitconfig`` is the KUnit default config. > +If you didn't run ``kunit.py run`` yet, you can generate it by running: > > .. code-block:: bash > > @@ -84,27 +77,70 @@ or ``VFAT_FS``. To run ``FAT_KUNIT_TEST``, the ``.kunitconfig`` has: > ``.kunitconfig`` lives in the ``--build_dir`` used by kunit.py, which is > ``.kunit`` by default. > > -.. note :: > +Before running the tests, kunit_tool ensures that all config options > +set in ``.kunitconfig`` are set in the kernel ``.config``. It will warn > +you if you have not included dependencies for the options used. > + > +There are many ways to customize the configurations: > + > +a. Edit ``.kunit/.kunitconfig``. The file should contain the list of kconfig > + options required to run the desired tests, including their dependencies. > You may want to remove CONFIG_KUNIT_ALL_TESTS from the ``.kunitconfig`` as > it will enable a number of additional tests that you may not want. > + If you need to run on an architecture other than UML see :ref:`kunit-on-qemu`. > > -2. You can then add any other Kconfig options, for example: > +b. Enable additional kconfig options on top of ``.kunit/.kunitconfig``. > + For example, to include the kernel's linked-list test you can run:: > > -.. code-block:: none > + ./tools/testing/kunit/kunit.py run \ > + --kconfig_add CONFIG_LIST_KUNIT_TEST=y > > - CONFIG_LIST_KUNIT_TEST=y > +c. Provide the path of one or more .kunitconfig files from the tree. > + For example, to run only ``FAT_FS`` and ``EXT4`` tests you can run:: > > -Before running the tests, kunit_tool ensures that all config options > -set in ``.kunitconfig`` are set in the kernel ``.config``. It will warn > -you if you have not included dependencies for the options used. > + ./tools/testing/kunit/kunit.py run \ > + --kunitconfig ./fs/fat/.kunitconfig \ > + --kunitconfig ./fs/ext4/.kunitconfig > > -.. note :: > - If you change the ``.kunitconfig``, kunit.py will trigger a rebuild of the > +d. If you change the ``.kunitconfig``, kunit.py will trigger a rebuild of the > ``.config`` file. But you can edit the ``.config`` file directly or with > tools like ``make menuconfig O=.kunit``. As long as its a superset of > ``.kunitconfig``, kunit.py won't overwrite your changes. > > > +.. note :: > + > + To save a .kunitconfig after finding a satisfactory configuration:: > + > + make savedefconfig O=.kunit > + cp .kunit/defconfig .kunit/.kunitconfig > + > +Filtering tests by name > +~~~~~~~~~~~~~~~~~~~~~~~ > +If you want to be more specific than Kconfig can provide, it is also possible > +to select which tests to execute at boot-time by passing a glob filter > +(read instructions regarding the pattern in the manpage :manpage:`glob(7)`). > +If there is a ``"."`` (period) in the filter, it will be interpreted as a > +separator between the name of the test-suite and the test-case, > +otherwise, it will be interpreted as the name of the test suite. > +For example, let's assume we are using the default config: Another small nit: you could keep the consistency on naming test-suite and test-cases. Currently, you are using "test-suite" and "test suite" (same for test-cases). I guess any of the two options are fine, but it would be nice to keep it consistent. > + > +a. inform the name of a test suite, like ``"kunit_executor_test"``, > + to run every test case it contains:: > + > + ./tools/testing/kunit/kunit.py run "kunit_executor_test" > + > +b. inform the name of a test case prefixed by its test suite, > + like ``"example.example_simple_test"``, to run specifically that test case:: > + > + ./tools/testing/kunit/kunit.py run "example.example_simple_test" > + > +c. use wildcard characters (``*?[``) to run any test-case that match the pattern, I guess it would be "matches" instead of "match" here. Other than this small nits, this is a great improvement on the docs! Reviewed-by: Maíra Canal <mairacanal@xxxxxxxxxx> Best Regards, - Maíra Canal > + like ``"*.*64*"`` to run test-cases containing ``"64"`` in the name inside > + any test-suite:: > + > + ./tools/testing/kunit/kunit.py run "*.*64*" > + > Running Tests without the KUnit Wrapper > ======================================= > If you do not want to use the KUnit Wrapper (for example: you want code
