Re: [PATCH] kunit: tool: make --kunitconfig accept dirs, add lib/kunit fragment

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On Tue, Feb 23, 2021 at 6:52 AM Daniel Latypov <dlatypov@xxxxxxxxxx> wrote:
>
> TL;DR
> $ ./tools/testing/kunit/kunit.py run --kunitconfig=lib/kunit
>
> Per suggestion from Ted [1], we can reduce the amount of typing by
> assuming a convention that these files are named '.kunitconfig'.
>
> In the case of [1], we now have
> $ ./tools/testing/kunit/kunit.py run --kunitconfig=fs/ext4
>
> Also add in such a fragment for kunit itself so we can give that as an
> example more close to home (and thus less likely to be accidentally
> broken).
>
> [1] https://lore.kernel.org/linux-ext4/YCNF4yP1dB97zzwD@xxxxxxx/
>
> Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
> ---

Thanks! I really like this.

I'd assumed we'd check if the path exists, and fall back to appending
".kunitconfig", but checking if it's a directory is better.

I tried this out with all the different combinations I could think of,
and it works well.

Reviewed-by: David Gow <davidgow@xxxxxxxxxx>

Cheers,
-- David

>  lib/kunit/.kunitconfig                 | 3 +++
>  tools/testing/kunit/kunit.py           | 4 +++-
>  tools/testing/kunit/kunit_kernel.py    | 2 ++
>  tools/testing/kunit/kunit_tool_test.py | 6 ++++++
>  4 files changed, 14 insertions(+), 1 deletion(-)
>  create mode 100644 lib/kunit/.kunitconfig
>
> diff --git a/lib/kunit/.kunitconfig b/lib/kunit/.kunitconfig
> new file mode 100644
> index 000000000000..9235b7d42d38
> --- /dev/null
> +++ b/lib/kunit/.kunitconfig
> @@ -0,0 +1,3 @@
> +CONFIG_KUNIT=y
> +CONFIG_KUNIT_TEST=y
> +CONFIG_KUNIT_EXAMPLE_TEST=y
> diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
> index d5144fcb03ac..5da8fb3762f9 100755
> --- a/tools/testing/kunit/kunit.py
> +++ b/tools/testing/kunit/kunit.py
> @@ -184,7 +184,9 @@ def add_common_opts(parser) -> None:
>                             help='Run all KUnit tests through allyesconfig',
>                             action='store_true')
>         parser.add_argument('--kunitconfig',
> -                            help='Path to Kconfig fragment that enables KUnit tests',
> +                            help='Path to Kconfig fragment that enables KUnit tests.'
> +                            ' If given a directory, (e.g. lib/kunit), "/.kunitconfig" '
> +                            'will get  automatically appended.',
>                              metavar='kunitconfig')
>
>  def add_build_opts(parser) -> None:
> diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
> index f309a33256cd..89a7d4024e87 100644
> --- a/tools/testing/kunit/kunit_kernel.py
> +++ b/tools/testing/kunit/kunit_kernel.py
> @@ -132,6 +132,8 @@ class LinuxSourceTree(object):
>                         return
>
>                 if kunitconfig_path:
> +                       if os.path.isdir(kunitconfig_path):
> +                               kunitconfig_path = os.path.join(kunitconfig_path, KUNITCONFIG_PATH)
>                         if not os.path.exists(kunitconfig_path):
>                                 raise ConfigError(f'Specified kunitconfig ({kunitconfig_path}) does not exist')
>                 else:
> diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
> index 1ad3049e9069..2e809dd956a7 100755
> --- a/tools/testing/kunit/kunit_tool_test.py
> +++ b/tools/testing/kunit/kunit_tool_test.py
> @@ -251,6 +251,12 @@ class LinuxSourceTreeTest(unittest.TestCase):
>                 with tempfile.NamedTemporaryFile('wt') as kunitconfig:
>                         tree = kunit_kernel.LinuxSourceTree('', kunitconfig_path=kunitconfig.name)
>
> +       def test_dir_kunitconfig(self):
> +               with tempfile.TemporaryDirectory('') as dir:
> +                       with open(os.path.join(dir, '.kunitconfig'), 'w') as f:
> +                               pass
> +                       tree = kunit_kernel.LinuxSourceTree('', kunitconfig_path=dir)
> +
>         # TODO: add more test cases.
>
>
>
> base-commit: b12b47249688915e987a9a2a393b522f86f6b7ab
> --
> 2.30.0.617.g56c4b15f3c-goog
>



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