Re: [dpdk-dev] [PATCH v2] doc: add code coverage report generation guide

[Thomas Monjalon <thomas@monjalon.net>]

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23/09/2019 14:15, Marcin Zapolski:
> Add unit tests and code coverage reports generation guides to Meson
> build documentation.
> 
> Signed-off-by: Marcin Zapolski <marcinx.a.zapolski@intel.com>
> ---
> v2: fix trailing whitespaces
> ---
>  doc/build-sdk-meson.txt | 40 ++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 40 insertions(+)
> 
> diff --git a/doc/build-sdk-meson.txt b/doc/build-sdk-meson.txt
> index fc7fe37b5..691950a62 100644
> --- a/doc/build-sdk-meson.txt
> +++ b/doc/build-sdk-meson.txt
> @@ -192,3 +192,43 @@ From examples/helloworld/Makefile::
>  
>  	build:
>  		@mkdir -p $@
> +
> +Running DPDK unit-tests
> +-----------------------
> +
> +To run all defined unit tests we can use the command::
> +
> +	meson test -C build
> +
> +from DPDK root direcotry, where build is the project build directory. It is the
> +equivalent to running::
> +
> +	ninja test
> +
> +in ``build`` directory.
> +To run a set of tests belonging to a specific test suite, we can use::
> +
> +	meson test -C build --suite <test-suite>
> +
> +where <test-suite> can be ``fast-tests``, ``perf-tests``, ``driver-tests`` or
> +``debug-tests``.
> +
> +Generating code coverage reports
> +--------------------------------
> +
> +To gather code coverage data, we need to give meson the  ``-Db_coverage=true``
> +command line flag::
> +
> +	meson configure -Db_coverage=true
> +
> +To generate code coverage reports, the ``gcovr`` tool needs to be installed. On
> +most linux distributions it is available through the package manager, eg.
> +``sudo apt-get install gcovr``.
> +Then, after running the tests, we can generate the reports simply by running::
> +
> +	ninja coverage
> +
> +in project build directory. The reports will be generated in
> +``build/meson-logs`` directory, in ``html``, ``xml`` and ``txt`` formats.
> +To generate the coverage reports in only one format, we can use one of
> +``coverage-html``, ``coverage-xml`` or ``coverage-txt`` meson targets.