[PATCH] kunit: tool: add parsing of all files in directory

[Rae Moar <rmoar@google.com>]

Add ability to parse all files within a directory. Additionally add the
ability to parse all results in the KUnit debugfs repository.

How to parse all files in directory:

./tools/testing/kunit/kunit.py parse [directory path]

How to parse KUnit debugfs repository:

./tools/testing/kunit/kunit.py parse debugfs

For each file, the parser outputs the file name, results, and test
summary. At the end of all parsing, the parser outputs a total summary
line.

This feature can be easily tested on the tools/testing/kunit/test_data/
directory.

Signed-off-by: Rae Moar <rmoar@google.com>
---
 tools/testing/kunit/kunit.py | 45 ++++++++++++++++++++++++++----------
 1 file changed, 33 insertions(+), 12 deletions(-)

diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index bc74088c458a..827e6dac40ae 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -511,19 +511,40 @@ def exec_handler(cli_args: argparse.Namespace) -> None:
 
 
 def parse_handler(cli_args: argparse.Namespace) -> None:
-	if cli_args.file is None:
+	parsed_files = []
+	total_test = kunit_parser.Test()
+	total_test.status = kunit_parser.TestStatus.SUCCESS
+	if cli_args.file_path is None:
 		sys.stdin.reconfigure(errors='backslashreplace')  # type: ignore
 		kunit_output = sys.stdin  # type: Iterable[str]
-	else:
-		with open(cli_args.file, 'r', errors='backslashreplace') as f:
+	elif cli_args.file_path == "debugfs":
+		for (root, _, files) in os.walk("/sys/kernel/debug/kunit"):
+			for file in files:
+				if file == "results":
+					parsed_files.append(os.path.join(root, file))
+	elif os.path.isdir(cli_args.file_path):
+		for (root, _, files) in os.walk(cli_args.file_path):
+			for file in files:
+				parsed_files.append(os.path.join(root, file))
+	elif os.path.isfile(cli_args.file_path):
+		parsed_files.append(cli_args.file_path)
+
+	for file in parsed_files:
+		print(file)
+		with open(file, 'r', errors='backslashreplace') as f:
 			kunit_output = f.read().splitlines()
-	# We know nothing about how the result was created!
-	metadata = kunit_json.Metadata()
-	request = KunitParseRequest(raw_output=cli_args.raw_output,
-					json=cli_args.json)
-	result, _ = parse_tests(request, metadata, kunit_output)
-	if result.status != KunitStatus.SUCCESS:
-		sys.exit(1)
+		# We know nothing about how the result was created!
+		metadata = kunit_json.Metadata()
+		request = KunitParseRequest(raw_output=cli_args.raw_output,
+						json=cli_args.json)
+		_, test = parse_tests(request, metadata, kunit_output)
+		total_test.subtests.append(test)
+
+	if len(parsed_files) > 1: # if more than one file was parsed output total summary
+		print('All files parsed.')
+		stdout.print_with_timestamp(kunit_parser.DIVIDER)
+		kunit_parser.bubble_up_test_results(total_test)
+		kunit_parser.print_summary_line(total_test)
 
 
 subcommand_handlers_map = {
@@ -569,8 +590,8 @@ def main(argv: Sequence[str]) -> None:
 					    help='Parses KUnit results from a file, '
 					    'and parses formatted results.')
 	add_parse_opts(parse_parser)
-	parse_parser.add_argument('file',
-				  help='Specifies the file to read results from.',
+	parse_parser.add_argument('file_path',
+				  help='Specifies the file path to read results from.',
 				  type=str, nargs='?', metavar='input_file')
 
 	cli_args = parser.parse_args(massage_argv(argv))

base-commit: 08c454e26daab6f843e5883fb96f680f11784fa6
-- 
2.44.0.rc0.258.g7320e95886-goog