kunit: tool: Parse skipped tests from kselftest.h

Skipped tests reported by kselftest.h use a different format than KTAP,
there is no explicit test name. Normally the test name is part of the
free-form string after the SKIP keyword:

	ok 3 # SKIP test: some reason

Extend the parser to handle those correctly. Use the free-form string as
test name instead.

Link: https://lore.kernel.org/r/20250813-kunit-kselftesth-skip-v1-1-57ae3de4f109@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

Author: t-8ch

tools/testing/kunit/kunit_parser.py

@@ -352,9 +352,9 @@ def parse_test_plan(lines: LineStream, test: Test) -> bool:
 	lines.pop()
 	return True
 
-TEST_RESULT = re.compile(r'^\s*(ok|not ok) ([0-9]+) (- )?([^#]*)( # .*)?$')
+TEST_RESULT = re.compile(r'^\s*(ok|not ok) ([0-9]+) ?(- )?([^#]*)( # .*)?$')
 
-TEST_RESULT_SKIP = re.compile(r'^\s*(ok|not ok) ([0-9]+) (- )?(.*) # SKIP(.*)$')
+TEST_RESULT_SKIP = re.compile(r'^\s*(ok|not ok) ([0-9]+) ?(- )?(.*) # SKIP ?(.*)$')
 
 def peek_test_name_match(lines: LineStream, test: Test) -> bool:
 	"""
@@ -379,6 +379,8 @@ def peek_test_name_match(lines: LineStream, test: Test) -> bool:
 	if not match:
 		return False
 	name = match.group(4)
+	if not name:
+		return False
 	return name == test.name
 
 def parse_test_result(lines: LineStream, test: Test,
@@ -416,7 +418,7 @@ def parse_test_result(lines: LineStream, test: Test,
 
 	# Set name of test object
 	if skip_match:
-		test.name = skip_match.group(4)
+		test.name = skip_match.group(4) or skip_match.group(5)
 	else:
 		test.name = match.group(4)
 

tools/testing/kunit/test_data/test_is_test_passed-kselftest.log

@@ -1,5 +1,5 @@
 TAP version 13
-1..2
+1..3
 # selftests: membarrier: membarrier_test_single_thread
 # TAP version 13
 # 1..2
@@ -12,3 +12,4 @@ ok 1 selftests: membarrier: membarrier_test_single_thread
 # ok 1 sys_membarrier available
 # ok 2 sys membarrier invalid command test: command = -1, flags = 0, errno = 22. Failed as expected
 ok 2 selftests: membarrier: membarrier_test_multi_thread
+ok 3 # SKIP selftests: membarrier: membarrier_test_multi_thread