[PATCH 2/3] kunit: tool: make parser stop overwriting status of suites w/ no_tests

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Consider this invocation
$ ./tools/testing/kunit/kunit.py parse <<EOF
  TAP version 14
  1..2
  ok 1 - suite
    # Subtest: no_tests_suite
    # catastrophic error!
  not ok 1 - no_tests_suite
EOF

It will have a 0 exit code even though there's a "not ok".

Consider this one:
$ ./tools/testing/kunit/kunit.py parse <<EOF
  TAP version 14
  1..2
  ok 1 - suite
  not ok 1 - no_tests_suite
EOF

It will a non-zero exit code.

Why?
We have this line in the kunit_parser.py
> parent_test = parse_test_header(lines, test)
where we have special handling when we see "# Subtest" and we ignore the
explicit reported "not ok 1" status!

Also, NO_TESTS at a suite-level only results in a non-zero status code
where then there's only one suite atm.

This change is the minimal one to make sure we don't overwrite it.

Signed-off-by: Daniel Latypov <dlatypov@xxxxxxxxxx>
---
 tools/testing/kunit/kunit_parser.py                        | 7 +++++--
 .../test_data/test_is_test_passed-no_tests_no_plan.log     | 2 +-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py
index 7a0faf527a98..45c2c5837281 100644
--- a/tools/testing/kunit/kunit_parser.py
+++ b/tools/testing/kunit/kunit_parser.py
@@ -775,8 +775,11 @@ def parse_test(lines: LineStream, expected_num: int, log: List[str]) -> Test:
 
 	# Check for there being no tests
 	if parent_test and len(subtests) == 0:
-		test.status = TestStatus.NO_TESTS
-		test.add_error('0 tests run!')
+		# Don't override a bad status if this test had one reported.
+		# Assumption: no subtests means CRASHED is from Test.__init__()
+		if test.status in (TestStatus.TEST_CRASHED, TestStatus.SUCCESS):
+			test.status = TestStatus.NO_TESTS
+			test.add_error('0 tests run!')
 
 	# Add statuses to TestCounts attribute in Test object
 	bubble_up_test_results(test)
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_no_plan.log b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_no_plan.log
index dd873c981108..4f81876ee6f1 100644
--- a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_no_plan.log
+++ b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_no_plan.log
@@ -3,5 +3,5 @@ TAP version 14
   # Subtest: suite
   1..1
     # Subtest: case
-  ok 1 - case # SKIP
+  ok 1 - case
 ok 1 - suite
-- 
2.36.0.rc2.479.g8af0fa9b8e-goog




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