linux-kernel - Re: [PATCH v4 05/10] kunit: string-stream: Add cases for string

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Date:   Wed, 16 Aug 2023 15:54:41 -0400
From:   Rae Moar <rmoar@...gle.com>
To:     Richard Fitzgerald <rf@...nsource.cirrus.com>
Cc:     brendan.higgins@...ux.dev, davidgow@...gle.com,
        linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, patches@...nsource.cirrus.com
Subject: Re: [PATCH v4 05/10] kunit: string-stream: Add cases for
 string_stream newline appending

On Mon, Aug 14, 2023 at 9:23 AM Richard Fitzgerald
<rf@...nsource.cirrus.com> wrote:
>
> Add test cases for testing the string_stream feature that appends a
> newline to strings that do not already end with a newline.
>
> string_stream_no_auto_newline_test() tests with this feature disabled.
> Newlines should not be added or dropped.
>
> string_stream_auto_newline_test() tests with this feature enabled.
> Newlines should be added to lines that do not end with a newline.
>
> Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>

Hello!

These two cases seem very clean to me. I appreciate the organization
and commenting on the tests.

Reviewed-by: Rae Moar <rmoar@...gle.com>

Thanks!
-Rae

> ---
>  lib/kunit/string-stream-test.c | 51 ++++++++++++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
>
> diff --git a/lib/kunit/string-stream-test.c b/lib/kunit/string-stream-test.c
> index efe13e3322b5..46c2ac162fe8 100644
> --- a/lib/kunit/string-stream-test.c
> +++ b/lib/kunit/string-stream-test.c
> @@ -23,6 +23,7 @@ static void string_stream_init_test(struct kunit *test)
>         KUNIT_EXPECT_TRUE(test, list_empty(&stream->fragments));
>         KUNIT_EXPECT_PTR_EQ(test, stream->test, test);
>         KUNIT_EXPECT_EQ(test, stream->gfp, GFP_KERNEL);
> +       KUNIT_EXPECT_FALSE(test, stream->append_newlines);
>
>         KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream));
>  }
> @@ -226,12 +227,62 @@ static void string_stream_append_empty_string_test(struct kunit *test)
>         KUNIT_EXPECT_STREQ(test, string_stream_get_string(stream), "Add this line");
>  }
>
> +/* Adding strings without automatic newline appending */
> +static void string_stream_no_auto_newline_test(struct kunit *test)
> +{
> +       struct string_stream *stream;
> +
> +       stream = alloc_string_stream(test, GFP_KERNEL);
> +       KUNIT_ASSERT_NOT_ERR_OR_NULL(test, stream);
> +
> +       /*
> +        * Add some strings with and without newlines. All formatted
> +        * newlines should be preserved. No extra newlines should be
> +        * added.
> +        */
> +       string_stream_add(stream, "One");
> +       string_stream_add(stream, "Two\n");
> +       string_stream_add(stream, "%s\n", "Three");
> +       string_stream_add(stream, "Four");
> +       KUNIT_EXPECT_STREQ(test, string_stream_get_string(stream),
> +                          "OneTwo\nThree\nFour");
> +}
> +
> +/* Adding strings with automatic newline appending */
> +static void string_stream_auto_newline_test(struct kunit *test)
> +{
> +       struct string_stream *stream;
> +
> +       stream = alloc_string_stream(test, GFP_KERNEL);
> +       KUNIT_ASSERT_NOT_ERR_OR_NULL(test, stream);
> +
> +       string_stream_set_append_newlines(stream, true);
> +       KUNIT_EXPECT_TRUE(test, stream->append_newlines);
> +
> +       /*
> +        * Add some strings with and without newlines. Newlines should
> +        * be appended to lines that do not end with \n, but newlines
> +        * resulting from the formatting should not be changed.
> +        */
> +       string_stream_add(stream, "One");
> +       string_stream_add(stream, "Two\n");
> +       string_stream_add(stream, "%s\n", "Three");
> +       string_stream_add(stream, "%s", "Four\n");
> +       string_stream_add(stream, "Five\n%s", "Six");
> +       string_stream_add(stream, "Seven\n\n");
> +       string_stream_add(stream, "Eight");
> +       KUNIT_EXPECT_STREQ(test, string_stream_get_string(stream),
> +                          "One\nTwo\nThree\nFour\nFive\nSix\nSeven\n\nEight\n");
> +}
> +
>  static struct kunit_case string_stream_test_cases[] = {
>         KUNIT_CASE(string_stream_init_test),
>         KUNIT_CASE(string_stream_line_add_test),
>         KUNIT_CASE(string_stream_variable_length_line_test),
>         KUNIT_CASE(string_stream_append_test),
>         KUNIT_CASE(string_stream_append_empty_string_test),
> +       KUNIT_CASE(string_stream_no_auto_newline_test),
> +       KUNIT_CASE(string_stream_auto_newline_test),
>         {}
>  };
>
> --
> 2.30.2
>