From: Uriel Guajardo <[email protected]>

Currently, if the kernel is configured incorrectly or if it crashes before any
kunit tests are run, kunit finishes without error, reporting
that 0 test cases were run.

To fix this, an error is shown when the tap header is not found, which
indicates that kunit was not able to run at all.

Signed-off-by: Uriel Guajardo <[email protected]>
---
 tools/testing/kunit/kunit_parser.py               |   8 ++++----
 tools/testing/kunit/kunit_tool_test.py            |  11 +++++++++++
 .../kunit/test_data/test_insufficient_memory.log  | Bin 0 -> 856 bytes
 3 files changed, 15 insertions(+), 4 deletions(-)
 create mode 100644 tools/testing/kunit/test_data/test_insufficient_memory.log

diff --git a/tools/testing/kunit/kunit_parser.py 
b/tools/testing/kunit/kunit_parser.py
index 64aac9dcd431..f13e0c0d6663 100644
--- a/tools/testing/kunit/kunit_parser.py
+++ b/tools/testing/kunit/kunit_parser.py
@@ -265,11 +265,9 @@ def bubble_up_suite_errors(test_suite_list: 
List[TestSuite]) -> TestStatus:
        return bubble_up_errors(lambda x: x.status, test_suite_list)
 
 def parse_test_result(lines: List[str]) -> TestResult:
-       if not lines:
-               return TestResult(TestStatus.NO_TESTS, [], lines)
        consume_non_diagnositic(lines)
-       if not parse_tap_header(lines):
-               return None
+       if not lines or not parse_tap_header(lines):
+               return TestResult(TestStatus.NO_TESTS, [], lines)
        test_suites = []
        test_suite = parse_test_suite(lines)
        while test_suite:
@@ -282,6 +280,8 @@ def parse_run_tests(kernel_output) -> TestResult:
        failed_tests = 0
        crashed_tests = 0
        test_result = 
parse_test_result(list(isolate_kunit_output(kernel_output)))
+       if test_result.status == TestStatus.NO_TESTS:
+               print_with_timestamp(red('[ERROR] ') + 'no kunit output 
detected')
        for test_suite in test_result.suites:
                if test_suite.status == TestStatus.SUCCESS:
                        print_suite_divider(green('[PASSED] ') + 
test_suite.name)
diff --git a/tools/testing/kunit/kunit_tool_test.py 
b/tools/testing/kunit/kunit_tool_test.py
index 984588d6ba95..4a7ef2eef831 100755
--- a/tools/testing/kunit/kunit_tool_test.py
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -170,6 +170,17 @@ class KUnitParserTest(unittest.TestCase):
                        result.status)
                file.close()
 
+       def test_no_kunit_output(self):
+               crash_log = get_absolute_path(
+                       'test_data/test_insufficient_memory.log')
+               file = open(crash_log)
+               print_mock = mock.patch('builtins.print').start()
+               result = kunit_parser.parse_run_tests(
+                       kunit_parser.isolate_kunit_output(file.readlines()))
+               print_mock.assert_any_call(StrContains("no kunit output 
detected"))
+               print_mock.stop()
+               file.close()
+
        def test_crashed_test(self):
                crashed_log = get_absolute_path(
                        'test_data/test_is_test_passed-crash.log')
diff --git a/tools/testing/kunit/test_data/test_insufficient_memory.log 
b/tools/testing/kunit/test_data/test_insufficient_memory.log
new file mode 100644
index 
0000000000000000000000000000000000000000..6c9e4da7b6d763a03c0c83302b2faa6dc21a6ea6
GIT binary patch
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-- 
2.27.0.278.ge193c7cf3a9-goog

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