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Message-ID: <CABVgOSmh2x-Bf=Ts3AHiNAuOfHQV=ECiFhm2yFfOyJtidVt5ig@mail.gmail.com>
Date: Tue, 22 Nov 2022 13:46:14 +0800
From: David Gow <davidgow@...gle.com>
To: Daniel Latypov <dlatypov@...gle.com>
Cc: brendanhiggins@...gle.com, rmoar@...gle.com,
linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org
Subject: Re: [PATCH] kunit: tool: make --json do nothing if --raw_ouput is set
On Tue, Nov 22, 2022 at 3:55 AM 'Daniel Latypov' via KUnit Development
<kunit-dev@...glegroups.com> wrote:
>
> When --raw_output is set (to any value), we don't actually parse the
> test results. So asking to print the test results as json doesn't make
> sense.
>
> We internally create a fake test with one passing subtest, so --json
> would actually print out something misleading.
>
> This patch:
> * Rewords the flag descriptions so hopefully this is more obvious.
> * Also updates --raw_output's description to note the default behavior
> is to print out only "KUnit" results (actually any KTAP results)
> * also renames and refactors some related logic for clarity (e.g.
> test_result => test, it's a kunit_parser.Test object).
>
> Notably, this patch does not make it an error to specify --json and
> --raw_output together. This is an edge case, but I know of at least one
> wrapper around kunit.py that always sets --json. You'd never be able to
> use --raw_output with that wrapper.
>
> Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
> ---
This seems sensible enough to me (and works fine here).
I really like the new flag descriptions, too.
Reviewed-by: David Gow <davidgow@...gle.com>
Cheers,
-- David
> tools/testing/kunit/kunit.py | 34 ++++++++++++++++++----------------
> 1 file changed, 18 insertions(+), 16 deletions(-)
>
> diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
> index 4d4663fb578b..e7b6549712d6 100755
> --- a/tools/testing/kunit/kunit.py
> +++ b/tools/testing/kunit/kunit.py
> @@ -192,12 +192,11 @@ def _map_to_overall_status(test_status: kunit_parser.TestStatus) -> KunitStatus:
> def parse_tests(request: KunitParseRequest, metadata: kunit_json.Metadata, input_data: Iterable[str]) -> Tuple[KunitResult, kunit_parser.Test]:
> parse_start = time.time()
>
> - test_result = kunit_parser.Test()
> -
> if request.raw_output:
> # Treat unparsed results as one passing test.
> - test_result.status = kunit_parser.TestStatus.SUCCESS
> - test_result.counts.passed = 1
> + fake_test = kunit_parser.Test()
> + fake_test.status = kunit_parser.TestStatus.SUCCESS
> + fake_test.counts.passed = 1
>
> output: Iterable[str] = input_data
> if request.raw_output == 'all':
> @@ -206,14 +205,17 @@ def parse_tests(request: KunitParseRequest, metadata: kunit_json.Metadata, input
> output = kunit_parser.extract_tap_lines(output, lstrip=False)
> for line in output:
> print(line.rstrip())
> + parse_time = time.time() - parse_start
> + return KunitResult(KunitStatus.SUCCESS, parse_time), fake_test
>
> - else:
> - test_result = kunit_parser.parse_run_tests(input_data)
> - parse_end = time.time()
> +
> + # Actually parse the test results.
> + test = kunit_parser.parse_run_tests(input_data)
> + parse_time = time.time() - parse_start
>
> if request.json:
> json_str = kunit_json.get_json_result(
> - test=test_result,
> + test=test,
> metadata=metadata)
> if request.json == 'stdout':
> print(json_str)
> @@ -223,10 +225,10 @@ def parse_tests(request: KunitParseRequest, metadata: kunit_json.Metadata, input
> stdout.print_with_timestamp("Test results stored in %s" %
> os.path.abspath(request.json))
>
> - if test_result.status != kunit_parser.TestStatus.SUCCESS:
> - return KunitResult(KunitStatus.TEST_FAILURE, parse_end - parse_start), test_result
> + if test.status != kunit_parser.TestStatus.SUCCESS:
> + return KunitResult(KunitStatus.TEST_FAILURE, parse_time), test
>
> - return KunitResult(KunitStatus.SUCCESS, parse_end - parse_start), test_result
> + return KunitResult(KunitStatus.SUCCESS, parse_time), test
>
> def run_tests(linux: kunit_kernel.LinuxSourceTree,
> request: KunitRequest) -> KunitResult:
> @@ -359,14 +361,14 @@ def add_exec_opts(parser) -> None:
> choices=['suite', 'test'])
>
> def add_parse_opts(parser) -> None:
> - parser.add_argument('--raw_output', help='If set don\'t format output from kernel. '
> - 'If set to --raw_output=kunit, filters to just KUnit output.',
> + parser.add_argument('--raw_output', help='If set don\'t parse output from kernel. '
> + 'By default, filters to just KUnit output. Use '
> + '--raw_output=all to show everything',
> type=str, nargs='?', const='all', default=None, choices=['all', 'kunit'])
> parser.add_argument('--json',
> nargs='?',
> - help='Stores test results in a JSON, and either '
> - 'prints to stdout or saves to file if a '
> - 'filename is specified',
> + help='Prints parsed test results as JSON to stdout or a file if '
> + 'a filename is specified. Does nothing if --raw_output is set.',
> type=str, const='stdout', default=None, metavar='FILE')
>
>
>
> base-commit: 870f63b7cd78d0055902d839a60408f7428b4e84
> --
> 2.38.1.584.g0f3c55d4c2-goog
>
> --
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