Re: [PATCH v2] kunit: tool: Fix bug in parsing test plan

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On Fri, 7 Mar 2025 at 02:20, Rae Moar <rmoar@xxxxxxxxxx> wrote:
>
> A bug was identified where the KTAP below caused an infinite loop:
>
>  TAP version 13
>  ok 4 test_case
>  1..4
>
> The infinite loop was caused by the parser not parsing a test plan
> if following a test result line.
>
> Fix this bug to correctly parse test plan line.
>
> Signed-off-by: Rae Moar <rmoar@xxxxxxxxxx>
> ---

Looks good. I agree with Brendan that this probably should have a
test, but I'm happy to take that as a follow-up if you prefer.

Reviewed-by: David Gow <davidgow@xxxxxxxxxx>

Cheers,
-- David

> Changes since v1:
> - Remove error reported when test plan is missing.
>
>  tools/testing/kunit/kunit_parser.py | 9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py
> index 29fc27e8949b..da53a709773a 100644
> --- a/tools/testing/kunit/kunit_parser.py
> +++ b/tools/testing/kunit/kunit_parser.py
> @@ -759,7 +759,7 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest:
>                 # If parsing the main/top-level test, parse KTAP version line and
>                 # test plan
>                 test.name = "main"
> -               ktap_line = parse_ktap_header(lines, test, printer)
> +               parse_ktap_header(lines, test, printer)
>                 test.log.extend(parse_diagnostic(lines))
>                 parse_test_plan(lines, test)
>                 parent_test = True
> @@ -768,13 +768,12 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str], is_subtest:
>                 # the KTAP version line and/or subtest header line
>                 ktap_line = parse_ktap_header(lines, test, printer)
>                 subtest_line = parse_test_header(lines, test)
> +               test.log.extend(parse_diagnostic(lines))
> +               parse_test_plan(lines, test)
>                 parent_test = (ktap_line or subtest_line)
>                 if parent_test:
> -                       # If KTAP version line and/or subtest header is found, attempt
> -                       # to parse test plan and print test header
> -                       test.log.extend(parse_diagnostic(lines))
> -                       parse_test_plan(lines, test)
>                         print_test_header(test, printer)
> +
>         expected_count = test.expected_count
>         subtests = []
>         test_num = 1
>
> base-commit: 0619a4868fc1b32b07fb9ed6c69adc5e5cf4e4b2
> --
> 2.49.0.rc0.332.g42c0ae87b1-goog
>

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