linux-kernel - Re: [PATCH v12 04/18] kunit: test: add assertion printing library

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Date:   Mon, 12 Aug 2019 16:46:44 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Brendan Higgins <brendanhiggins@...gle.com>,
        frowand.list@...il.com, gregkh@...uxfoundation.org,
        jpoimboe@...hat.com, keescook@...gle.com,
        kieran.bingham@...asonboard.com, mcgrof@...nel.org,
        peterz@...radead.org, robh@...nel.org, shuah@...nel.org,
        tytso@....edu, yamada.masahiro@...ionext.com
Cc:     devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        kunit-dev@...glegroups.com, linux-doc@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-um@...ts.infradead.org,
        Alexander.Levin@...rosoft.com, Tim.Bird@...y.com,
        amir73il@...il.com, dan.carpenter@...cle.com, daniel@...ll.ch,
        jdike@...toit.com, joel@....id.au, julia.lawall@...6.fr,
        khilman@...libre.com, knut.omang@...cle.com, logang@...tatee.com,
        mpe@...erman.id.au, pmladek@...e.com, rdunlap@...radead.org,
        richard@....at, rientjes@...gle.com, rostedt@...dmis.org,
        wfg@...ux.intel.com, Brendan Higgins <brendanhiggins@...gle.com>
Subject: Re: [PATCH v12 04/18] kunit: test: add assertion printing library

Quoting Brendan Higgins (2019-08-12 11:24:07)
> Add `struct kunit_assert` and friends which provide a structured way to
> capture data from an expectation or an assertion (introduced later in
> the series) so that it may be printed out in the event of a failure.
> 
> Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
> ---

Reviewed-by: Stephen Boyd <sboyd@...nel.org>

Just some minor nits below

> diff --git a/include/kunit/assert.h b/include/kunit/assert.h
> new file mode 100644
> index 0000000000000..55f1b88b0cb4d
> --- /dev/null
> +++ b/include/kunit/assert.h
> @@ -0,0 +1,183 @@
[...]
> +                           struct string_stream *stream);
> +
> +struct kunit_fail_assert {
> +       struct kunit_assert assert;
> +};
> +
> +void kunit_fail_assert_format(const struct kunit_assert *assert,
> +                             struct string_stream *stream);
> +
> +#define KUNIT_INIT_FAIL_ASSERT_STRUCT(test, type) {                           \
> +               .assert = KUNIT_INIT_ASSERT_STRUCT(test,                       \
> +                                                  type,                       \
> +                                                  kunit_fail_assert_format)   \

This one got indented one too many times?

> +}
> +
> +struct kunit_unary_assert {
> +       struct kunit_assert assert;
> +       const char *condition;
> +       bool expected_true;
> +};
> +
> +void kunit_unary_assert_format(const struct kunit_assert *assert,
> +                              struct string_stream *stream);
> +
[...]
> +#define KUNIT_INIT_BINARY_STR_ASSERT_STRUCT(test,                             \
> +                                           type,                              \
> +                                           op_str,                            \
> +                                           left_str,                          \
> +                                           left_val,                          \
> +                                           right_str,                         \
> +                                           right_val) {                       \
> +       .assert = KUNIT_INIT_ASSERT_STRUCT(test,                               \
> +                                          type,                               \
> +                                          kunit_binary_str_assert_format),    \
> +       .operation = op_str,                                                   \
> +       .left_text = left_str,                                                 \
> +       .left_value = left_val,                                                \
> +       .right_text = right_str,                                               \
> +       .right_value = right_val                                               \
> +}

It would be nice to have kernel doc on these macros so we know how to
use them.