#!/usr/bin/python3# SPDX-License-Identifier: GPL-2.0## A thin wrapper on top of the KUnit Kernel## Copyright (C) 2019, Google LLC.# Author: Felix Guo <felixguoxiuping@gmail.com># Author: Brendan Higgins <brendanhiggins@google.com> import argparseimport sysimport osimport timeimport shutil from collections import namedtuplefrom enum import Enum, auto import kunit_configimport kunit_kernelimport kunit_parser KunitResult = namedtuple('KunitResult', ['status','result']) KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs',					   'build_dir', 'defconfig',					   'alltests', 'make_options']) KernelDirectoryPath = sys.argv[0].split('tools/testing/kunit/')[0] class KunitStatus(Enum):	SUCCESS = auto()	CONFIG_FAILURE = auto()	BUILD_FAILURE = auto()	TEST_FAILURE = auto() def create_default_kunitconfig():	if not os.path.exists(kunit_kernel.kunitconfig_path):		shutil.copyfile('arch/um/configs/kunit_defconfig',				kunit_kernel.kunitconfig_path) def get_kernel_root_path():	parts = sys.argv[0] if not __file__ else __file__	parts = os.path.realpath(parts).split('tools/testing/kunit')	if len(parts) != 2:		sys.exit(1)	return parts[0] def run_tests(linux: kunit_kernel.LinuxSourceTree,	      request: KunitRequest) -> KunitResult:	config_start = time.time()	success = linux.build_reconfig(request.build_dir, request.make_options)	config_end = time.time()	if not success:		return KunitResult(KunitStatus.CONFIG_FAILURE, 'could not configure kernel') 	kunit_parser.print_with_timestamp('Building KUnit Kernel ...') 	build_start = time.time()	success = linux.build_um_kernel(request.alltests,					request.jobs,					request.build_dir,					request.make_options)	build_end = time.time()	if not success:		return KunitResult(KunitStatus.BUILD_FAILURE, 'could not build kernel') 	kunit_parser.print_with_timestamp('Starting KUnit Kernel ...')	test_start = time.time()	kunit_output = linux.run_kernel(		timeout=None if request.alltests else request.timeout,		build_dir=request.build_dir)	if request.raw_output:		raw_output = kunit_parser.raw_output(kunit_output)		isolated = list(kunit_parser.isolate_kunit_output(raw_output))		test_result = kunit_parser.parse_test_result(isolated)	else:		test_result = kunit_parser.parse_run_tests(kunit_output)	test_end = time.time() 	kunit_parser.print_with_timestamp((		'Elapsed time: %.3fs total, %.3fs configuring, %.3fs ' +		'building, %.3fs running\n') % (				test_end - config_start,				config_end - config_start,				build_end - build_start,				test_end - test_start)) 	if test_result.status != kunit_parser.TestStatus.SUCCESS:		return KunitResult(KunitStatus.TEST_FAILURE, test_result)	else:		return KunitResult(KunitStatus.SUCCESS, test_result) def main(argv, linux=None):	parser = argparse.ArgumentParser(			description='Helps writing and running KUnit tests.')	subparser = parser.add_subparsers(dest='subcommand') 	run_parser = subparser.add_parser('run', help='Runs KUnit tests.')	run_parser.add_argument('--raw_output', help='don\'t format output from kernel',				action='store_true') 	run_parser.add_argument('--timeout',				help='maximum number of seconds to allow for all tests '				'to run. This does not include time taken to build the '				'tests.',				type=int,				default=300,				metavar='timeout') 	run_parser.add_argument('--jobs',				help='As in the make command, "Specifies  the number of '				'jobs (commands) to run simultaneously."',				type=int, default=8, metavar='jobs') 	run_parser.add_argument('--build_dir',				help='As in the make command, it specifies the build '				'directory.',				type=str, default='', metavar='build_dir') 	run_parser.add_argument('--defconfig',				help='Uses a default .kunitconfig.',				action='store_true') 	run_parser.add_argument('--alltests',				help='Run all KUnit tests through allyesconfig',				action='store_true') 	run_parser.add_argument('--make_options',				help='X=Y make option, can be repeated.',				action='append') 	cli_args = parser.parse_args(argv) 	if cli_args.subcommand == 'run':		if get_kernel_root_path():			os.chdir(get_kernel_root_path()) 		if cli_args.build_dir:			if not os.path.exists(cli_args.build_dir):				os.mkdir(cli_args.build_dir)			kunit_kernel.kunitconfig_path = os.path.join(				cli_args.build_dir,				kunit_kernel.kunitconfig_path) 		if cli_args.defconfig:			create_default_kunitconfig() 		if not linux:			linux = kunit_kernel.LinuxSourceTree() 		request = KunitRequest(cli_args.raw_output,				       cli_args.timeout,				       cli_args.jobs,				       cli_args.build_dir,				       cli_args.defconfig,				       cli_args.alltests,				       cli_args.make_options)		result = run_tests(linux, request)		if result.status != KunitStatus.SUCCESS:			sys.exit(1)	else:		parser.print_help() if __name__ == '__main__':	main(sys.argv[1:])