On Wed, Jun 30, 2021 at 4:40 PM Rae Moar rmoar@google.com wrote:

This patch addresses misleading error messages reported by kunit_tool in two cases. First, in the case of TAP output having an incorrect header format or missing a header, the parser used to output an error message of 'no tests run!'. Now the parser outputs an error message of 'could not parse test results!'.

As an example:

Before: $ ./tools/testing/kunit/kunit.py parse /dev/null [ERROR] no tests run! ...

After: $ ./tools/testing/kunit/kunit.py parse /dev/null [ERROR] could not parse test results! ...

Second, in the case of TAP output with the correct header but no tests, the parser used to output an error message of 'could not parse test results!'. Now the parser outputs an error message of 'no tests run!'.

As an example:

Before: $ echo -e 'TAP version 14\n1..0' | ./tools/testing/kunit/kunit.py parse [ERROR] could not parse test results!

After: $ echo -e 'TAP version 14\n1..0' | ./tools/testing/kunit/kunit.py parse [ERROR] no tests run!

Additionally, this patch also corrects the tests in kunit_tool_test.py and adds a test to check the error in the case of TAP output with the correct header but no tests (the log for this test was simplified from the first version of this patch).

Just as a note: usually people will mention changes between versions of a patch series just above the diffstat. Picking a random example from linux-kselftest: https://lore.kernel.org/linux-kselftest/20210630081202.4423-7-yangbo.lu@nxp....

Note the extra "---" above those change notes, just like above the diffstat.

Signed-off-by: Rae Moar rmoar@google.com

Reviewed-by: Daniel Latypov dlatypov@google.com

Thanks! Looks good to me.

Just a note to others, this is a v2 of https://lore.kernel.org/linux-kselftest/20210629223541.1512296-1-rmoar@googl...

---

tools/testing/kunit/kunit_parser.py | 6 ++++-- tools/testing/kunit/kunit_tool_test.py | 16 +++++++++++++--- ...st_is_test_passed-no_tests_run_no_header.log} | 0 ...t_is_test_passed-no_tests_run_with_header.log | 2 ++ 4 files changed, 19 insertions(+), 5 deletions(-) rename tools/testing/kunit/test_data/{test_is_test_passed-no_tests_run.log => test_is_test_passed-no_tests_run_no_header.log} (100%) create mode 100644 tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_with_header.log

diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py index c3c524b79db8..b88db3f51dc5 100644 --- a/tools/testing/kunit/kunit_parser.py +++ b/tools/testing/kunit/kunit_parser.py @@ -338,9 +338,11 @@ def bubble_up_suite_errors(test_suites: Iterable[TestSuite]) -> TestStatus: def parse_test_result(lines: LineStream) -> TestResult: consume_non_diagnostic(lines) if not lines or not parse_tap_header(lines):

•           return TestResult(TestStatus.NO_TESTS, [], lines)
  

•           return TestResult(TestStatus.FAILURE_TO_PARSE_TESTS, [], lines)
    expected_test_suite_num = parse_test_plan(lines)
  

•   if not expected_test_suite_num:
  

•   if expected_test_suite_num == 0:
  

•           return TestResult(TestStatus.NO_TESTS, [], lines)
  

•   elif expected_test_suite_num is None:
            return TestResult(TestStatus.FAILURE_TO_PARSE_TESTS, [], lines)
    test_suites = []
    for i in range(1, expected_test_suite_num + 1):
  

diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py index bdae0e5f6197..75045aa0f8a1 100755 --- a/tools/testing/kunit/kunit_tool_test.py +++ b/tools/testing/kunit/kunit_tool_test.py @@ -157,8 +157,18 @@ class KUnitParserTest(unittest.TestCase): kunit_parser.TestStatus.FAILURE, result.status)

•   def test_no_header(self):
  

•           empty_log = test_data_path('test_is_test_passed-no_tests_run_no_header.log')
  

•           with open(empty_log) as file:
  

•                   result = kunit_parser.parse_run_tests(
  

•                           kunit_parser.extract_tap_lines(file.readlines()))
  

•           self.assertEqual(0, len(result.suites))
  

•           self.assertEqual(
  

•                   kunit_parser.TestStatus.FAILURE_TO_PARSE_TESTS,
  

•                   result.status)
  

•   def test_no_tests(self):
  

•           empty_log = test_data_path('test_is_test_passed-no_tests_run.log')
  

•           empty_log = test_data_path('test_is_test_passed-no_tests_run_with_header.log')
            with open(empty_log) as file:
                    result = kunit_parser.parse_run_tests(
                            kunit_parser.extract_tap_lines(file.readlines()))
  

@@ -173,7 +183,7 @@ class KUnitParserTest(unittest.TestCase): with open(crash_log) as file: result = kunit_parser.parse_run_tests( kunit_parser.extract_tap_lines(file.readlines()))

•           print_mock.assert_any_call(StrContains('no tests run!'))
  

•           print_mock.assert_any_call(StrContains('could not parse test results!'))
            print_mock.stop()
            file.close()
  
  

@@ -309,7 +319,7 @@ class KUnitJsonTest(unittest.TestCase): result["sub_groups"][1]["test_cases"][0])

    def test_no_tests_json(self):

•           result = self._json_for('test_is_test_passed-no_tests_run.log')
  

•           result = self._json_for('test_is_test_passed-no_tests_run_with_header.log')
            self.assertEqual(0, len(result['sub_groups']))
  
  

class StrContains(str): diff --git a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_no_header.log similarity index 100% rename from tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log rename to tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_no_header.log diff --git a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_with_header.log b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_with_header.log new file mode 100644 index 000000000000..5f48ee659d40 --- /dev/null +++ b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run_with_header.log @@ -0,0 +1,2 @@ +TAP version 14

+1..0

2.32.0.93.g670b81a890-goog