Re: [PATCH v2 1/1] Documentation: dev-tools: clarify KTAP specification wording

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On Tue, Feb 8, 2022 at 12:28 AM <frowand.list@xxxxxxxxx> wrote:
>
> From: Frank Rowand <frank.rowand@xxxxxxxx>
>
> Add the spec version to the title line.
>
> Explain likely source of "Unknown lines".
>
> "Unknown lines" in nested tests are optionally indented.
>
> Add "Unknown lines" items to differences between TAP & KTAP list
>
> Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxx>
> ---

Thanks for fixing this. I'm happy with this version.

Reviewed-by: David Gow <davidgow@xxxxxxxxxx>

>
> Changes since version 1
>   - Explain likely source of "Unknown lines"
>   - "Unknown line" in nested tests are optionally indented
>   - Add "Unknown lines" items to differences between TAP & KTAP list
>
>  Documentation/dev-tools/ktap.rst | 24 ++++++++++++++++++------
>  1 file changed, 18 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/dev-tools/ktap.rst b/Documentation/dev-tools/ktap.rst
> index 878530cb9c27..9c40c94d3f12 100644
> --- a/Documentation/dev-tools/ktap.rst
> +++ b/Documentation/dev-tools/ktap.rst
> @@ -1,8 +1,8 @@
>  .. SPDX-License-Identifier: GPL-2.0
>
> -========================================
> -The Kernel Test Anything Protocol (KTAP)
> -========================================
> +===================================================
> +The Kernel Test Anything Protocol (KTAP), version 1
> +===================================================
>
>  TAP, or the Test Anything Protocol is a format for specifying test results used
>  by a number of projects. It's website and specification are found at this `link
> @@ -174,6 +174,13 @@ There may be lines within KTAP output that do not follow the format of one of
>  the four formats for lines described above. This is allowed, however, they will
>  not influence the status of the tests.
>
> +This is an important difference from TAP.  Kernel tests may print messages
> +to the system console or a log file.  Both of these destinations may contain
> +messages either from unrelated kernel or userspace activity, or kernel
> +messages from non-test code that is invoked by the test.  The kernel code
> +invoked by the test likely is not aware that a test is in progress and
> +thus can not print the message as a diagnostic message.
> +
>  Nested tests
>  ------------
>
> @@ -186,10 +193,13 @@ starting with another KTAP version line and test plan, and end with the overall
>  result. If one of the subtests fail, for example, the parent test should also
>  fail.
>
> -Additionally, all result lines in a subtest should be indented. One level of
> +Additionally, all lines in a subtest should be indented. One level of
>  indentation is two spaces: "  ". The indentation should begin at the version
>  line and should end before the parent test's result line.
>
> +"Unknown lines" are not considered to be lines in a subtest and thus are
> +allowed to be either indented or not indented.
> +
>  An example of a test with two nested subtests:
>
>  .. code-block::
> @@ -225,9 +235,11 @@ Major differences between TAP and KTAP
>  --------------------------------------
>
>  Note the major differences between the TAP and KTAP specification:
> -- yaml and json are not recommended in diagnostic messages
> -- TODO directive not recognized
> +- yaml and json are not recommended in KTAP diagnostic messages
> +- TODO directive not recognized in KTAP
>  - KTAP allows for an arbitrary number of tests to be nested
> +- TAP includes "Unknown lines" in the category of "Anything else"
> +- TAP says "Unknown lines" are "incorrect; KTAP allows "Unknown lines"

Nit: unmached quotes around "incorrect".

>
>  The TAP14 specification does permit nested tests, but instead of using another
>  nested version line, uses a line of the form
> --
> Frank Rowand <frank.rowand@xxxxxxxx>
>

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