summaryrefslogtreecommitdiff
path: root/tools/testing/kunit/kunit_parser.py
blob: f13e0c0d666395595bd2cf71c8affe1deebe82f8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
# 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()

kunit_start_re = re.compile(r'TAP version [0-9]+$')
kunit_end_re = re.compile('(List of all partitions:|'
			  'Kernel panic - not syncing: VFS:|reboot: System halted)')

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)
		yield 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) -> 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
		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]) -> 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 not expected_test_case_num:
		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):
		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

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)
	test_suites = []
	test_suite = parse_test_suite(lines)
	while test_suite:
		test_suites.append(test_suite)
		test_suite = parse_test_suite(lines)
	return TestResult(bubble_up_suite_errors(test_suites), test_suites, lines)

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_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)
		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('')
	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