# SPDX-License-Identifier: GPL-2.0
#
# Parses test results from a kernel dmesg log.
#
# Copyright (C) 2019, Google LLC.
# Author: Felix Guo <felixguoxiuping@gmail.com>
# Author: Brendan Higgins <brendanhiggins@google.com>
import re
from collections import namedtuple
from datetime import datetime
from enum import Enum, auto
from functools import reduce
from typing import List
TestResult = namedtuple('TestResult', ['status','suites','log'])
class TestSuite(object):
def __init__(self):
self.status = None
self.name = None
self.cases = []
def __str__(self):
return 'TestSuite(' + self.status + ',' + self.name + ',' + str(self.cases) + ')'
def __repr__(self):
return str(self)
class TestCase(object):
def __init__(self):
self.status = None
self.name = ''
self.log = []
def __str__(self):
return 'TestCase(' + self.status + ',' + self.name + ',' + str(self.log) + ')'
def __repr__(self):
return str(self)
class TestStatus(Enum):
SUCCESS = auto()
FAILURE = auto()
TEST_CRASHED = auto()
NO_TESTS = auto()
FAILURE_TO_PARSE_TESTS = auto()
kunit_start_re = re.compile(r'TAP version [0-9]+$')
kunit_end_re = re.compile('(List of all partitions:|'
'Kernel panic - not syncing: VFS:)')
def isolate_kunit_output(kernel_output):
started = False
for line in kernel_output:
if kunit_start_re.search(line):
prefix_len = len(line.split('TAP version')[0])
started = True
yield line[prefix_len:] if prefix_len > 0 else line
elif kunit_end_re.search(line):
break
elif started:
yield line[prefix_len:] if prefix_len > 0 else line
def raw_output(kernel_output):
for line in kernel_output:
print(line)
DIVIDER = '=' * 60
RESET = '\033[0;0m'
def red(text):
return '\033[1;31m' + text + RESET
def yellow(text):
return '\033[1;33m' + text + RESET
def green(text):
return '\033[1;32m' + text + RESET
def print_with_timestamp(message):
print('[%s] %s' % (datetime.now().strftime('%H:%M:%S'), message))
def format_suite_divider(message):
return '======== ' + message + ' ========'
def print_suite_divider(message):
print_with_timestamp(DIVIDER)
print_with_timestamp(format_suite_divider(message))
def print_log(log):
for m in log:
print_with_timestamp(m)
TAP_ENTRIES = re.compile(r'^(TAP|[\s]*ok|[\s]*not ok|[\s]*[0-9]+\.\.[0-9]+|[\s]*#).*$')
def consume_non_diagnositic(lines: List[str]) -> None:
while lines and not TAP_ENTRIES.match(lines[0]):
lines.pop(0)
def save_non_diagnositic(lines: List[str], test_case: TestCase) -> None:
while lines and not TAP_ENTRIES.match(lines[0]):
test_case.log.append(lines[0])
lines.pop(0)
OkNotOkResult = namedtuple('OkNotOkResult', ['is_ok','description', 'text'])
OK_NOT_OK_SUBTEST = re.compile(r'^[\s]+(ok|not ok) [0-9]+ - (.*)$')
OK_NOT_OK_MODULE = re.compile(r'^(ok|not ok) ([0-9]+) - (.*)$')
def parse_ok_not_ok_test_case(lines: List[str], test_case: TestCase) -> bool:
save_non_diagnositic(lines, test_case)
if not lines:
test_case.status = TestStatus.TEST_CRASHED
return True
line = lines[0]
match = OK_NOT_OK_SUBTEST.match(line)
while not match and lines:
line = lines.pop(0)
match = OK_NOT_OK_SUBTEST.match(line)
if match:
test_case.log.append(lines.pop(0))
test_case.name = match.group(2)
if test_case.status == TestStatus.TEST_CRASHED:
return True
if match.group(1) == 'ok':
test_case.status = TestStatus.SUCCESS
else:
test_case.status = TestStatus.FAILURE
return True
else:
return False
SUBTEST_DIAGNOSTIC = re.compile(r'^[\s]+# .*?: (.*)$')
DIAGNOSTIC_CRASH_MESSAGE = 'kunit test case crashed!'
def parse_diagnostic(lines: List[str], test_case: TestCase) -> bool:
save_non_diagnositic(lines, test_case)
if not lines:
return False
line = lines[0]
match = SUBTEST_DIAGNOSTIC.match(line)
if match:
test_case.log.append(lines.pop(0))
if match.group(1) == DIAGNOSTIC_CRASH_MESSAGE:
test_case.status = TestStatus.TEST_CRASHED
return True
else:
return False
def parse_test_case(lines: List[str]) -> TestCase:
test_case = TestCase()
save_non_diagnositic(lines, test_case)
while parse_diagnostic(lines, test_case):
pass
if parse_ok_not_ok_test_case(lines, test_case):
return test_case
else:
return None
SUBTEST_HEADER = re.compile(r'^[\s]+# Subtest: (.*)$')
def parse_subtest_header(lines: List[str]) -> str:
consume_non_diagnositic(lines)
if not lines:
return None
match = SUBTEST_HEADER.match(lines[0])
if match:
lines.pop(0)
return match.group(1)
else:
return None
SUBTEST_PLAN = re.compile(r'[\s]+[0-9]+\.\.([0-9]+)')
def parse_subtest_plan(lines: List[str]) -> int:
consume_non_diagnositic(lines)
match = SUBTEST_PLAN.match(lines[0])
if match:
lines.pop(0)
return int(match.group(1))
else:
return None
def max_status(left: TestStatus, right: TestStatus) -> TestStatus:
if left == TestStatus.TEST_CRASHED or right == TestStatus.TEST_CRASHED:
return TestStatus.TEST_CRASHED
elif left == TestStatus.FAILURE or right == TestStatus.FAILURE:
return TestStatus.FAILURE
elif left != TestStatus.SUCCESS:
return left
elif right != TestStatus.SUCCESS:
return right
else:
return TestStatus.SUCCESS
def parse_ok_not_ok_test_suite(lines: List[str],
test_suite: TestSuite,
expected_suite_index: int) -> bool:
consume_non_diagnositic(lines)
if not lines:
test_suite.status = TestStatus.TEST_CRASHED
return False
line = lines[0]
match = OK_NOT_OK_MODULE.match(line)
if match:
lines.pop(0)
if match.group(1) == 'ok':
test_suite.status = TestStatus.SUCCESS
else:
test_suite.status = TestStatus.FAILURE
suite_index = int(match.group(2))
if suite_index != expected_suite_index:
print_with_timestamp(
red('[ERROR] ') + 'expected_suite_index ' +
str(expected_suite_index) + ', but got ' +
str(suite_index))
return True
else:
return False
def bubble_up_errors(to_status, status_container_list) -> TestStatus:
status_list = map(to_status, status_container_list)
return reduce(max_status, status_list, TestStatus.SUCCESS)
def bubble_up_test_case_errors(test_suite: TestSuite) -> TestStatus:
max_test_case_status = bubble_up_errors(lambda x: x.status, test_suite.cases)
return max_status(max_test_case_status, test_suite.status)
def parse_test_suite(lines: List[str], expected_suite_index: int) -> TestSuite:
if not lines:
return None
consume_non_diagnositic(lines)
test_suite = TestSuite()
test_suite.status = TestStatus.SUCCESS
name = parse_subtest_header(lines)
if not name:
return None
test_suite.name = name
expected_test_case_num = parse_subtest_plan(lines)
if expected_test_case_num is None:
return None
while expected_test_case_num > 0:
test_case = parse_test_case(lines)
if not test_case:
break
test_suite.cases.append(test_case)
expected_test_case_num -= 1
if parse_ok_not_ok_test_suite(lines, test_suite, expected_suite_index):
test_suite.status = bubble_up_test_case_errors(test_suite)
return test_suite
elif not lines:
print_with_timestamp(red('[ERROR] ') + 'ran out of lines before end token')
return test_suite
else:
print('failed to parse end of suite' + lines[0])
return None
TAP_HEADER = re.compile(r'^TAP version 14$')
def parse_tap_header(lines: List[str]) -> bool:
consume_non_diagnositic(lines)
if TAP_HEADER.match(lines[0]):
lines.pop(0)
return True
else:
return False
TEST_PLAN = re.compile(r'[0-9]+\.\.([0-9]+)')
def parse_test_plan(lines: List[str]) -> int:
consume_non_diagnositic(lines)
match = TEST_PLAN.match(lines[0])
if match:
lines.pop(0)
return int(match.group(1))
else:
return None
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:
consume_non_diagnositic(lines)
if not lines or not parse_tap_header(lines):
return TestResult(TestStatus.NO_TESTS, [], lines)
expected_test_suite_num = parse_test_plan(lines)
if not expected_test_suite_num:
return TestResult(TestStatus.FAILURE_TO_PARSE_TESTS, [], lines)
test_suites = []
for i in range(1, expected_test_suite_num + 1):
test_suite = parse_test_suite(lines, i)
if test_suite:
test_suites.append(test_suite)
else:
print_with_timestamp(
red('[ERROR] ') + ' expected ' +
str(expected_test_suite_num) +
' test suites, but got ' + str(i - 2))
break
test_suite = parse_test_suite(lines, -1)
if test_suite:
print_with_timestamp(red('[ERROR] ') +
'got unexpected test suite: ' + test_suite.name)
if test_suites:
return TestResult(bubble_up_suite_errors(test_suites), test_suites, lines)
else:
return TestResult(TestStatus.NO_TESTS, [], lines)
def print_and_count_results(test_result: TestResult) -> None:
total_tests = 0
failed_tests = 0
crashed_tests = 0
for test_suite in test_result.suites:
if test_suite.status == TestStatus.SUCCESS:
print_suite_divider(green('[PASSED] ') + test_suite.name)
elif test_suite.status == TestStatus.TEST_CRASHED:
print_suite_divider(red('[CRASHED] ' + test_suite.name))
else:
print_suite_divider(red('[FAILED] ') + test_suite.name)
for test_case in test_suite.cases:
total_tests += 1
if test_case.status == TestStatus.SUCCESS:
print_with_timestamp(green('[PASSED] ') + test_case.name)
elif test_case.status == TestStatus.TEST_CRASHED:
crashed_tests += 1
print_with_timestamp(red('[CRASHED] ' + test_case.name))
print_log(map(yellow, test_case.log))
print_with_timestamp('')
else:
failed_tests += 1
print_with_timestamp(red('[FAILED] ') + test_case.name)
print_log(map(yellow, test_case.log))
print_with_timestamp('')
return total_tests, failed_tests, crashed_tests
def parse_run_tests(kernel_output) -> TestResult:
total_tests = 0
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(red('[ERROR] ') + yellow('no tests run!'))
elif test_result.status == TestStatus.FAILURE_TO_PARSE_TESTS:
print(red('[ERROR] ') + yellow('could not parse test results!'))
else:
(total_tests,
failed_tests,
crashed_tests) = print_and_count_results(test_result)
print_with_timestamp(DIVIDER)
fmt = green if test_result.status == TestStatus.SUCCESS else red
print_with_timestamp(
fmt('Testing complete. %d tests run. %d failed. %d crashed.' %
(total_tests, failed_tests, crashed_tests)))
return test_result
