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-rw-r--r--tools/testing/kunit/.gitignore3
-rwxr-xr-xtools/testing/kunit/kunit.py116
-rw-r--r--tools/testing/kunit/kunit_config.py66
-rw-r--r--tools/testing/kunit/kunit_kernel.py148
-rw-r--r--tools/testing/kunit/kunit_parser.py310
-rwxr-xr-xtools/testing/kunit/kunit_tool_test.py206
-rw-r--r--tools/testing/kunit/test_data/test_is_test_passed-all_passed.log32
-rw-r--r--tools/testing/kunit/test_data/test_is_test_passed-crash.log69
-rw-r--r--tools/testing/kunit/test_data/test_is_test_passed-failure.log36
-rw-r--r--tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log75
-rw-r--r--tools/testing/kunit/test_data/test_output_isolated_correctly.log106
-rw-r--r--tools/testing/kunit/test_data/test_read_from_file.kconfig17
12 files changed, 1184 insertions, 0 deletions
diff --git a/tools/testing/kunit/.gitignore b/tools/testing/kunit/.gitignore
new file mode 100644
index 000000000000..c791ff59a37a
--- /dev/null
+++ b/tools/testing/kunit/.gitignore
@@ -0,0 +1,3 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod] \ No newline at end of file
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
new file mode 100755
index 000000000000..da11bd62a4b8
--- /dev/null
+++ b/tools/testing/kunit/kunit.py
@@ -0,0 +1,116 @@
+#!/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 argparse
+import sys
+import os
+import time
+
+from collections import namedtuple
+from enum import Enum, auto
+
+import kunit_config
+import kunit_kernel
+import kunit_parser
+
+KunitResult = namedtuple('KunitResult', ['status','result'])
+
+KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir'])
+
+class KunitStatus(Enum):
+ SUCCESS = auto()
+ CONFIG_FAILURE = auto()
+ BUILD_FAILURE = auto()
+ TEST_FAILURE = auto()
+
+def run_tests(linux: kunit_kernel.LinuxSourceTree,
+ request: KunitRequest) -> KunitResult:
+ config_start = time.time()
+ success = linux.build_reconfig(request.build_dir)
+ 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.jobs, request.build_dir)
+ 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()
+
+ test_result = kunit_parser.TestResult(kunit_parser.TestStatus.SUCCESS,
+ [],
+ 'Tests not Parsed.')
+ if request.raw_output:
+ kunit_parser.raw_output(
+ linux.run_kernel(timeout=request.timeout))
+ else:
+ kunit_output = linux.run_kernel(timeout=request.timeout)
+ 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):
+ 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=None, metavar='build_dir')
+
+ cli_args = parser.parse_args(argv)
+
+ if cli_args.subcommand == 'run':
+ request = KunitRequest(cli_args.raw_output,
+ cli_args.timeout,
+ cli_args.jobs,
+ cli_args.build_dir)
+ result = run_tests(linux, request)
+ if result.status != KunitStatus.SUCCESS:
+ sys.exit(1)
+ else:
+ parser.print_help()
+
+if __name__ == '__main__':
+ main(sys.argv[1:], kunit_kernel.LinuxSourceTree())
diff --git a/tools/testing/kunit/kunit_config.py b/tools/testing/kunit/kunit_config.py
new file mode 100644
index 000000000000..ebf3942b23f5
--- /dev/null
+++ b/tools/testing/kunit/kunit_config.py
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Builds a .config from a kunitconfig.
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping@gmail.com>
+# Author: Brendan Higgins <brendanhiggins@google.com>
+
+import collections
+import re
+
+CONFIG_IS_NOT_SET_PATTERN = r'^# CONFIG_\w+ is not set$'
+CONFIG_PATTERN = r'^CONFIG_\w+=\S+$'
+
+KconfigEntryBase = collections.namedtuple('KconfigEntry', ['raw_entry'])
+
+
+class KconfigEntry(KconfigEntryBase):
+
+ def __str__(self) -> str:
+ return self.raw_entry
+
+
+class KconfigParseError(Exception):
+ """Error parsing Kconfig defconfig or .config."""
+
+
+class Kconfig(object):
+ """Represents defconfig or .config specified using the Kconfig language."""
+
+ def __init__(self):
+ self._entries = []
+
+ def entries(self):
+ return set(self._entries)
+
+ def add_entry(self, entry: KconfigEntry) -> None:
+ self._entries.append(entry)
+
+ def is_subset_of(self, other: 'Kconfig') -> bool:
+ return self.entries().issubset(other.entries())
+
+ def write_to_file(self, path: str) -> None:
+ with open(path, 'w') as f:
+ for entry in self.entries():
+ f.write(str(entry) + '\n')
+
+ def parse_from_string(self, blob: str) -> None:
+ """Parses a string containing KconfigEntrys and populates this Kconfig."""
+ self._entries = []
+ is_not_set_matcher = re.compile(CONFIG_IS_NOT_SET_PATTERN)
+ config_matcher = re.compile(CONFIG_PATTERN)
+ for line in blob.split('\n'):
+ line = line.strip()
+ if not line:
+ continue
+ elif config_matcher.match(line) or is_not_set_matcher.match(line):
+ self._entries.append(KconfigEntry(line))
+ elif line[0] == '#':
+ continue
+ else:
+ raise KconfigParseError('Failed to parse: ' + line)
+
+ def read_from_file(self, path: str) -> None:
+ with open(path, 'r') as f:
+ self.parse_from_string(f.read())
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
new file mode 100644
index 000000000000..07c0abf2f47d
--- /dev/null
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -0,0 +1,148 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Runs UML kernel, collects output, and handles errors.
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Felix Guo <felixguoxiuping@gmail.com>
+# Author: Brendan Higgins <brendanhiggins@google.com>
+
+
+import logging
+import subprocess
+import os
+
+import kunit_config
+
+KCONFIG_PATH = '.config'
+
+class ConfigError(Exception):
+ """Represents an error trying to configure the Linux kernel."""
+
+
+class BuildError(Exception):
+ """Represents an error trying to build the Linux kernel."""
+
+
+class LinuxSourceTreeOperations(object):
+ """An abstraction over command line operations performed on a source tree."""
+
+ def make_mrproper(self):
+ try:
+ subprocess.check_output(['make', 'mrproper'])
+ except OSError as e:
+ raise ConfigError('Could not call make command: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise ConfigError(e.output)
+
+ def make_olddefconfig(self, build_dir):
+ command = ['make', 'ARCH=um', 'olddefconfig']
+ if build_dir:
+ command += ['O=' + build_dir]
+ try:
+ subprocess.check_output(command)
+ except OSError as e:
+ raise ConfigError('Could not call make command: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise ConfigError(e.output)
+
+ def make(self, jobs, build_dir):
+ command = ['make', 'ARCH=um', '--jobs=' + str(jobs)]
+ if build_dir:
+ command += ['O=' + build_dir]
+ try:
+ subprocess.check_output(command)
+ except OSError as e:
+ raise BuildError('Could not call execute make: ' + e)
+ except subprocess.CalledProcessError as e:
+ raise BuildError(e.output)
+
+ def linux_bin(self, params, timeout, build_dir):
+ """Runs the Linux UML binary. Must be named 'linux'."""
+ linux_bin = './linux'
+ if build_dir:
+ linux_bin = os.path.join(build_dir, 'linux')
+ process = subprocess.Popen(
+ [linux_bin] + params,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ process.wait(timeout=timeout)
+ return process
+
+
+def get_kconfig_path(build_dir):
+ kconfig_path = KCONFIG_PATH
+ if build_dir:
+ kconfig_path = os.path.join(build_dir, KCONFIG_PATH)
+ return kconfig_path
+
+class LinuxSourceTree(object):
+ """Represents a Linux kernel source tree with KUnit tests."""
+
+ def __init__(self):
+ self._kconfig = kunit_config.Kconfig()
+ self._kconfig.read_from_file('kunitconfig')
+ self._ops = LinuxSourceTreeOperations()
+
+ def clean(self):
+ try:
+ self._ops.make_mrproper()
+ except ConfigError as e:
+ logging.error(e)
+ return False
+ return True
+
+ def build_config(self, build_dir):
+ kconfig_path = get_kconfig_path(build_dir)
+ if build_dir and not os.path.exists(build_dir):
+ os.mkdir(build_dir)
+ self._kconfig.write_to_file(kconfig_path)
+ try:
+ self._ops.make_olddefconfig(build_dir)
+ except ConfigError as e:
+ logging.error(e)
+ return False
+ validated_kconfig = kunit_config.Kconfig()
+ validated_kconfig.read_from_file(kconfig_path)
+ if not self._kconfig.is_subset_of(validated_kconfig):
+ logging.error('Provided Kconfig is not contained in validated .config!')
+ return False
+ return True
+
+ def build_reconfig(self, build_dir):
+ """Creates a new .config if it is not a subset of the kunitconfig."""
+ kconfig_path = get_kconfig_path(build_dir)
+ if os.path.exists(kconfig_path):
+ existing_kconfig = kunit_config.Kconfig()
+ existing_kconfig.read_from_file(kconfig_path)
+ if not self._kconfig.is_subset_of(existing_kconfig):
+ print('Regenerating .config ...')
+ os.remove(kconfig_path)
+ return self.build_config(build_dir)
+ else:
+ return True
+ else:
+ print('Generating .config ...')
+ return self.build_config(build_dir)
+
+ def build_um_kernel(self, jobs, build_dir):
+ try:
+ self._ops.make_olddefconfig(build_dir)
+ self._ops.make(jobs, build_dir)
+ except (ConfigError, BuildError) as e:
+ logging.error(e)
+ return False
+ used_kconfig = kunit_config.Kconfig()
+ used_kconfig.read_from_file(get_kconfig_path(build_dir))
+ if not self._kconfig.is_subset_of(used_kconfig):
+ logging.error('Provided Kconfig is not contained in final config!')
+ return False
+ return True
+
+ def run_kernel(self, args=[], timeout=None, build_dir=None):
+ args.extend(['mem=256M'])
+ process = self._ops.linux_bin(args, timeout, build_dir)
+ with open('test.log', 'w') as f:
+ for line in process.stdout:
+ f.write(line.rstrip().decode('ascii') + '\n')
+ yield line.rstrip().decode('ascii')
diff --git a/tools/testing/kunit/kunit_parser.py b/tools/testing/kunit/kunit_parser.py
new file mode 100644
index 000000000000..4ffbae0f6732
--- /dev/null
+++ b/tools/testing/kunit/kunit_parser.py
@@ -0,0 +1,310 @@
+# 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]+$')
+kunit_end_re = re.compile('List of all partitions:')
+
+def isolate_kunit_output(kernel_output):
+ started = False
+ for line in kernel_output:
+ if kunit_start_re.match(line):
+ started = True
+ yield line
+ elif kunit_end_re.match(line):
+ break
+ elif started:
+ yield line
+
+def raw_output(kernel_output):
+ for line in kernel_output:
+ print(line)
+
+DIVIDER = '=' * 60
+
+RESET = '\033[0;0m'
+
+def red(text):
+ return '\033[1;31m' + text + RESET
+
+def yellow(text):
+ return '\033[1;33m' + text + RESET
+
+def green(text):
+ return '\033[1;32m' + text + RESET
+
+def print_with_timestamp(message):
+ print('[%s] %s' % (datetime.now().strftime('%H:%M:%S'), message))
+
+def format_suite_divider(message):
+ return '======== ' + message + ' ========'
+
+def print_suite_divider(message):
+ print_with_timestamp(DIVIDER)
+ print_with_timestamp(format_suite_divider(message))
+
+def print_log(log):
+ for m in log:
+ print_with_timestamp(m)
+
+TAP_ENTRIES = re.compile(r'^(TAP|\t?ok|\t?not ok|\t?[0-9]+\.\.[0-9]+|\t?#).*$')
+
+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'^\t(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,
+ expecting_test_case: bool) -> bool:
+ save_non_diagnositic(lines, test_case)
+ if not lines:
+ if expecting_test_case:
+ test_case.status = TestStatus.TEST_CRASHED
+ return True
+ else:
+ return False
+ line = lines[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'^\t# .*?: (.*)$')
+DIAGNOSTIC_CRASH_MESSAGE = 'kunit test case crashed!'
+
+def parse_diagnostic(lines: List[str], test_case: TestCase) -> bool:
+ save_non_diagnositic(lines, test_case)
+ if not lines:
+ return False
+ line = lines[0]
+ match = SUBTEST_DIAGNOSTIC.match(line)
+ if match:
+ test_case.log.append(lines.pop(0))
+ if match.group(1) == DIAGNOSTIC_CRASH_MESSAGE:
+ test_case.status = TestStatus.TEST_CRASHED
+ return True
+ else:
+ return False
+
+def parse_test_case(lines: List[str], expecting_test_case: bool) -> TestCase:
+ test_case = TestCase()
+ save_non_diagnositic(lines, test_case)
+ while parse_diagnostic(lines, test_case):
+ pass
+ if parse_ok_not_ok_test_case(lines, test_case, expecting_test_case):
+ return test_case
+ else:
+ return None
+
+SUBTEST_HEADER = re.compile(r'^\t# Subtest: (.*)$')
+
+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'\t[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
+ test_case = parse_test_case(lines, expected_test_case_num > 0)
+ expected_test_case_num -= 1
+ while test_case:
+ test_suite.cases.append(test_case)
+ test_case = parse_test_case(lines, expected_test_case_num > 0)
+ 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:
+ if not lines:
+ return TestResult(TestStatus.NO_TESTS, [], lines)
+ consume_non_diagnositic(lines)
+ if not parse_tap_header(lines):
+ return None
+ 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)))
+ 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
diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
new file mode 100755
index 000000000000..4a12baa0cd4e
--- /dev/null
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -0,0 +1,206 @@
+#!/usr/bin/python3
+# SPDX-License-Identifier: GPL-2.0
+#
+# A collection of tests for tools/testing/kunit/kunit.py
+#
+# Copyright (C) 2019, Google LLC.
+# Author: Brendan Higgins <brendanhiggins@google.com>
+
+import unittest
+from unittest import mock
+
+import tempfile, shutil # Handling test_tmpdir
+
+import os
+
+import kunit_config
+import kunit_parser
+import kunit_kernel
+import kunit
+
+test_tmpdir = ''
+
+def setUpModule():
+ global test_tmpdir
+ test_tmpdir = tempfile.mkdtemp()
+
+def tearDownModule():
+ shutil.rmtree(test_tmpdir)
+
+def get_absolute_path(path):
+ return os.path.join(os.path.dirname(__file__), path)
+
+class KconfigTest(unittest.TestCase):
+
+ def test_is_subset_of(self):
+ kconfig0 = kunit_config.Kconfig()
+ self.assertTrue(kconfig0.is_subset_of(kconfig0))
+
+ kconfig1 = kunit_config.Kconfig()
+ kconfig1.add_entry(kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ self.assertTrue(kconfig1.is_subset_of(kconfig1))
+ self.assertTrue(kconfig0.is_subset_of(kconfig1))
+ self.assertFalse(kconfig1.is_subset_of(kconfig0))
+
+ def test_read_from_file(self):
+ kconfig = kunit_config.Kconfig()
+ kconfig_path = get_absolute_path(
+ 'test_data/test_read_from_file.kconfig')
+
+ kconfig.read_from_file(kconfig_path)
+
+ expected_kconfig = kunit_config.Kconfig()
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_UML=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_MMU=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_EXAMPLE_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('# CONFIG_MK8 is not set'))
+
+ self.assertEqual(kconfig.entries(), expected_kconfig.entries())
+
+ def test_write_to_file(self):
+ kconfig_path = os.path.join(test_tmpdir, '.config')
+
+ expected_kconfig = kunit_config.Kconfig()
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_UML=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_MMU=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('CONFIG_EXAMPLE_TEST=y'))
+ expected_kconfig.add_entry(
+ kunit_config.KconfigEntry('# CONFIG_MK8 is not set'))
+
+ expected_kconfig.write_to_file(kconfig_path)
+
+ actual_kconfig = kunit_config.Kconfig()
+ actual_kconfig.read_from_file(kconfig_path)
+
+ self.assertEqual(actual_kconfig.entries(),
+ expected_kconfig.entries())
+
+class KUnitParserTest(unittest.TestCase):
+
+ def assertContains(self, needle, haystack):
+ for line in haystack:
+ if needle in line:
+ return
+ raise AssertionError('"' +
+ str(needle) + '" not found in "' + str(haystack) + '"!')
+
+ def test_output_isolated_correctly(self):
+ log_path = get_absolute_path(
+ 'test_data/test_output_isolated_correctly.log')
+ file = open(log_path)
+ result = kunit_parser.isolate_kunit_output(file.readlines())
+ self.assertContains('TAP version 14\n', result)
+ self.assertContains(' # Subtest: example', result)
+ self.assertContains(' 1..2', result)
+ self.assertContains(' ok 1 - example_simple_test', result)
+ self.assertContains(' ok 2 - example_mock_test', result)
+ self.assertContains('ok 1 - example', result)
+ file.close()
+
+ def test_parse_successful_test_log(self):
+ all_passed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-all_passed.log')
+ file = open(all_passed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.SUCCESS,
+ result.status)
+ file.close()
+
+ def test_parse_failed_test_log(self):
+ failed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-failure.log')
+ file = open(failed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.FAILURE,
+ result.status)
+ file.close()
+
+ def test_no_tests(self):
+ empty_log = get_absolute_path(
+ 'test_data/test_is_test_passed-no_tests_run.log')
+ file = open(empty_log)
+ result = kunit_parser.parse_run_tests(
+ kunit_parser.isolate_kunit_output(file.readlines()))
+ self.assertEqual(0, len(result.suites))
+ self.assertEqual(
+ kunit_parser.TestStatus.NO_TESTS,
+ result.status)
+ file.close()
+
+ def test_crashed_test(self):
+ crashed_log = get_absolute_path(
+ 'test_data/test_is_test_passed-crash.log')
+ file = open(crashed_log)
+ result = kunit_parser.parse_run_tests(file.readlines())
+ self.assertEqual(
+ kunit_parser.TestStatus.TEST_CRASHED,
+ result.status)
+ file.close()
+
+class StrContains(str):
+ def __eq__(self, other):
+ return self in other
+
+class KUnitMainTest(unittest.TestCase):
+ def setUp(self):
+ path = get_absolute_path('test_data/test_is_test_passed-all_passed.log')
+ file = open(path)
+ all_passed_log = file.readlines()
+ self.print_patch = mock.patch('builtins.print')
+ self.print_mock = self.print_patch.start()
+ self.linux_source_mock = mock.Mock()
+ self.linux_source_mock.build_reconfig = mock.Mock(return_value=True)
+ self.linux_source_mock.build_um_kernel = mock.Mock(return_value=True)
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=all_passed_log)
+
+ def tearDown(self):
+ self.print_patch.stop()
+ pass
+
+ def test_run_passes_args_pass(self):
+ kunit.main(['run'], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ self.print_mock.assert_any_call(StrContains('Testing complete.'))
+
+ def test_run_passes_args_fail(self):
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=[])
+ with self.assertRaises(SystemExit) as e:
+ kunit.main(['run'], self.linux_source_mock)
+ assert type(e.exception) == SystemExit
+ assert e.exception.code == 1
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ self.print_mock.assert_any_call(StrContains(' 0 tests run'))
+
+ def test_run_raw_output(self):
+ self.linux_source_mock.run_kernel = mock.Mock(return_value=[])
+ kunit.main(['run', '--raw_output'], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ assert self.linux_source_mock.run_kernel.call_count == 1
+ for kall in self.print_mock.call_args_list:
+ assert kall != mock.call(StrContains('Testing complete.'))
+ assert kall != mock.call(StrContains(' 0 tests run'))
+
+ def test_run_timeout(self):
+ timeout = 3453
+ kunit.main(['run', '--timeout', str(timeout)], self.linux_source_mock)
+ assert self.linux_source_mock.build_reconfig.call_count == 1
+ self.linux_source_mock.run_kernel.assert_called_once_with(timeout=timeout)
+ self.print_mock.assert_any_call(StrContains('Testing complete.'))
+
+if __name__ == '__main__':
+ unittest.main()
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log b/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log
new file mode 100644
index 000000000000..62ebc0288355
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-all_passed.log
@@ -0,0 +1,32 @@
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: example_simple_test passed
+ ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: all tests passed
+ok 2 - example
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-crash.log b/tools/testing/kunit/test_data/test_is_test_passed-crash.log
new file mode 100644
index 000000000000..0b249870c8be
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-crash.log
@@ -0,0 +1,69 @@
+printk: console [tty0] enabled
+printk: console [mc-1] enabled
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+Stack:
+ 6016f7db 6f81bd30 6f81bdd0 60021450
+ 6024b0e8 60021440 60018bbe 16f81bdc0
+ 00000001 6f81bd30 6f81bd20 6f81bdd0
+Call Trace:
+ [<6016f7db>] ? kunit_try_run_case+0xab/0xf0
+ [<60021450>] ? set_signals+0x0/0x60
+ [<60021440>] ? get_signals+0x0/0x10
+ [<60018bbe>] ? kunit_um_run_try_catch+0x5e/0xc0
+ [<60021450>] ? set_signals+0x0/0x60
+ [<60021440>] ? get_signals+0x0/0x10
+ [<60018bb3>] ? kunit_um_run_try_catch+0x53/0xc0
+ [<6016f321>] ? kunit_run_case_catch_errors+0x121/0x1a0
+ [<60018b60>] ? kunit_um_run_try_catch+0x0/0xc0
+ [<600189e0>] ? kunit_um_throw+0x0/0x180
+ [<6016f730>] ? kunit_try_run_case+0x0/0xf0
+ [<6016f600>] ? kunit_catch_run_case+0x0/0x130
+ [<6016edd0>] ? kunit_vprintk+0x0/0x30
+ [<6016ece0>] ? kunit_fail+0x0/0x40
+ [<6016eca0>] ? kunit_abort+0x0/0x40
+ [<6016ed20>] ? kunit_printk_emit+0x0/0xb0
+ [<6016f200>] ? kunit_run_case_catch_errors+0x0/0x1a0
+ [<6016f46e>] ? kunit_run_tests+0xce/0x260
+ [<6005b390>] ? unregister_console+0x0/0x190
+ [<60175b70>] ? suite_kunit_initexample_test_suite+0x0/0x20
+ [<60001cbb>] ? do_one_initcall+0x0/0x197
+ [<60001d47>] ? do_one_initcall+0x8c/0x197
+ [<6005cd20>] ? irq_to_desc+0x0/0x30
+ [<60002005>] ? kernel_init_freeable+0x1b3/0x272
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<601c0086>] ? kernel_init+0x26/0x160
+ [<60014442>] ? new_thread_handler+0x82/0xc0
+
+ # example_simple_test: kunit test case crashed!
+ # example_simple_test: example_simple_test failed
+ not ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: one or more tests failed
+not ok 2 - example
+List of all partitions:
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-failure.log b/tools/testing/kunit/test_data/test_is_test_passed-failure.log
new file mode 100644
index 000000000000..9e89d32d5667
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-failure.log
@@ -0,0 +1,36 @@
+TAP version 14
+ # Subtest: sysctl_test
+ 1..8
+ # sysctl_test_dointvec_null_tbl_data: sysctl_test_dointvec_null_tbl_data passed
+ ok 1 - sysctl_test_dointvec_null_tbl_data
+ # sysctl_test_dointvec_table_maxlen_unset: sysctl_test_dointvec_table_maxlen_unset passed
+ ok 2 - sysctl_test_dointvec_table_maxlen_unset
+ # sysctl_test_dointvec_table_len_is_zero: sysctl_test_dointvec_table_len_is_zero passed
+ ok 3 - sysctl_test_dointvec_table_len_is_zero
+ # sysctl_test_dointvec_table_read_but_position_set: sysctl_test_dointvec_table_read_but_position_set passed
+ ok 4 - sysctl_test_dointvec_table_read_but_position_set
+ # sysctl_test_dointvec_happy_single_positive: sysctl_test_dointvec_happy_single_positive passed
+ ok 5 - sysctl_test_dointvec_happy_single_positive
+ # sysctl_test_dointvec_happy_single_negative: sysctl_test_dointvec_happy_single_negative passed
+ ok 6 - sysctl_test_dointvec_happy_single_negative
+ # sysctl_test_dointvec_single_less_int_min: sysctl_test_dointvec_single_less_int_min passed
+ ok 7 - sysctl_test_dointvec_single_less_int_min
+ # sysctl_test_dointvec_single_greater_int_max: sysctl_test_dointvec_single_greater_int_max passed
+ ok 8 - sysctl_test_dointvec_single_greater_int_max
+kunit sysctl_test: all tests passed
+ok 1 - sysctl_test
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: EXPECTATION FAILED at lib/kunit/example-test.c:30
+ Expected 1 + 1 == 3, but
+ 1 + 1 == 2
+ 3 == 3
+ # example_simple_test: example_simple_test failed
+ not ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: one or more tests failed
+not ok 2 - example
diff --git a/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log
new file mode 100644
index 000000000000..ba69f5c94b75
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_is_test_passed-no_tests_run.log
@@ -0,0 +1,75 @@
+Core dump limits :
+ soft - 0
+ hard - NONE
+Checking environment variables for a tempdir...none found
+Checking if /dev/shm is on tmpfs...OK
+Checking PROT_EXEC mmap in /dev/shm...OK
+Adding 24743936 bytes to physical memory to account for exec-shield gap
+Linux version 4.12.0-rc3-00010-g7319eb35f493-dirty (brendanhiggins@mactruck.svl.corp.google.com) (gcc version 7.3.0 (Debian 7.3.0-5) ) #29 Thu Mar 15 14:57:19 PDT 2018
+Built 1 zonelists in Zone order, mobility grouping on. Total pages: 14038
+Kernel command line: root=98:0
+PID hash table entries: 256 (order: -1, 2048 bytes)
+Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
+Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
+Memory: 27868K/56932K available (1681K kernel code, 480K rwdata, 400K rodata, 89K init, 205K bss, 29064K reserved, 0K cma-reserved)
+SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
+NR_IRQS:15
+clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns
+Calibrating delay loop... 7384.26 BogoMIPS (lpj=36921344)
+pid_max: default: 32768 minimum: 301
+Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
+Mountpoint-cache hash table entries: 512 (order: 0, 4096 bytes)
+Checking that host ptys support output SIGIO...Yes
+Checking that host ptys support SIGIO on close...No, enabling workaround
+Using 2.6 host AIO
+clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+futex hash table entries: 256 (order: 0, 6144 bytes)
+clocksource: Switched to clocksource timer
+console [stderr0] disabled
+mconsole (version 2) initialized on /usr/local/google/home/brendanhiggins/.uml/6Ijecl/mconsole
+Checking host MADV_REMOVE support...OK
+workingset: timestamp_bits=62 max_order=13 bucket_order=0
+Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
+io scheduler noop registered
+io scheduler deadline registered
+io scheduler cfq registered (default)
+io scheduler mq-deadline registered
+io scheduler kyber registered
+Initialized stdio console driver
+Using a channel type which is configured out of UML
+setup_one_line failed for device 1 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 2 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 3 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 4 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 5 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 6 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 7 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 8 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 9 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 10 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 11 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 12 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 13 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 14 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 15 : Configuration failed
+Console initialized on /dev/tty0
+console [tty0] enabled
+console [mc-1] enabled
+List of all partitions:
+No filesystem could mount root, tried:
+
+Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0)
diff --git a/tools/testing/kunit/test_data/test_output_isolated_correctly.log b/tools/testing/kunit/test_data/test_output_isolated_correctly.log
new file mode 100644
index 000000000000..94a6b3aeaa92
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_output_isolated_correctly.log
@@ -0,0 +1,106 @@
+Linux version 5.1.0-rc7-00061-g04652f1cb4aa0 (brendanhiggins@mactruck.svl.corp.google.com) (gcc version 7.3.0 (Debian 7.3.0-18)) #163 Wed May 8 16:18:20 PDT 2019
+Built 1 zonelists, mobility grouping on. Total pages: 69906
+Kernel command line: mem=256M root=98:0
+Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
+Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
+Memory: 254468K/283500K available (1734K kernel code, 489K rwdata, 396K rodata, 85K init, 216K bss, 29032K reserved, 0K cma-reserved)
+SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
+NR_IRQS: 15
+clocksource: timer: mask: 0xffffffffffffffff max_cycles: 0x1cd42e205, max_idle_ns: 881590404426 ns
+------------[ cut here ]------------
+WARNING: CPU: 0 PID: 0 at kernel/time/clockevents.c:458 clockevents_register_device+0x143/0x160
+posix-timer cpumask == cpu_all_mask, using cpu_possible_mask instead
+CPU: 0 PID: 0 Comm: swapper Not tainted 5.1.0-rc7-00061-g04652f1cb4aa0 #163
+Stack:
+ 6005cc00 60233e18 60233e60 60233e18
+ 60233e60 00000009 00000000 6002a1b4
+ 1ca00000000 60071c23 60233e78 100000000000062
+Call Trace:
+ [<600214c5>] ? os_is_signal_stack+0x15/0x30
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6001597e>] ? show_stack+0xbe/0x1c0
+ [<6005cc00>] ? __printk_safe_exit+0x0/0x40
+ [<6002a1b4>] ? __warn+0x144/0x170
+ [<60071c23>] ? clockevents_register_device+0x143/0x160
+ [<60021440>] ? get_signals+0x0/0x10
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6002a27b>] ? warn_slowpath_fmt+0x9b/0xb0
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<6002a1e0>] ? warn_slowpath_fmt+0x0/0xb0
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<60021440>] ? get_signals+0x0/0x10
+ [<600213f0>] ? block_signals+0x0/0x20
+ [<60071c23>] ? clockevents_register_device+0x143/0x160
+ [<60021440>] ? get_signals+0x0/0x10
+ [<600213f0>] ? block_signals+0x0/0x20
+ [<6005c5ec>] ? printk+0x0/0x9b
+ [<60001bc8>] ? start_kernel+0x477/0x56a
+ [<600036f1>] ? start_kernel_proc+0x46/0x4d
+ [<60014442>] ? new_thread_handler+0x82/0xc0
+
+random: get_random_bytes called from print_oops_end_marker+0x4c/0x60 with crng_init=0
+---[ end trace c83434852b3702d3 ]---
+Calibrating delay loop... 6958.28 BogoMIPS (lpj=34791424)
+pid_max: default: 32768 minimum: 301
+Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
+Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
+*** VALIDATE proc ***
+Checking that host ptys support output SIGIO...Yes
+Checking that host ptys support SIGIO on close...No, enabling workaround
+clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+futex hash table entries: 256 (order: 0, 6144 bytes)
+clocksource: Switched to clocksource timer
+printk: console [stderr0] disabled
+mconsole (version 2) initialized on /usr/local/google/home/brendanhiggins/.uml/VZ2qMm/mconsole
+Checking host MADV_REMOVE support...OK
+workingset: timestamp_bits=62 max_order=16 bucket_order=0
+Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
+io scheduler mq-deadline registered
+io scheduler kyber registered
+Initialized stdio console driver
+Using a channel type which is configured out of UML
+setup_one_line failed for device 1 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 2 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 3 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 4 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 5 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 6 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 7 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 8 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 9 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 10 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 11 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 12 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 13 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 14 : Configuration failed
+Using a channel type which is configured out of UML
+setup_one_line failed for device 15 : Configuration failed
+Console initialized on /dev/tty0
+printk: console [tty0] enabled
+printk: console [mc-1] enabled
+TAP version 14
+ # Subtest: example
+ 1..2
+init_suite
+ # example_simple_test: initializing
+ # example_simple_test: example_simple_test passed
+ ok 1 - example_simple_test
+ # example_mock_test: initializing
+ # example_mock_test: example_mock_test passed
+ ok 2 - example_mock_test
+kunit example: all tests passed
+ok 1 - example
+List of all partitions:
diff --git a/tools/testing/kunit/test_data/test_read_from_file.kconfig b/tools/testing/kunit/test_data/test_read_from_file.kconfig
new file mode 100644
index 000000000000..d2a4928ac773
--- /dev/null
+++ b/tools/testing/kunit/test_data/test_read_from_file.kconfig
@@ -0,0 +1,17 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# User Mode Linux/x86 4.12.0-rc3 Kernel Configuration
+#
+CONFIG_UML=y
+CONFIG_MMU=y
+
+#
+# UML-specific options
+#
+
+#
+# Host processor type and features
+#
+# CONFIG_MK8 is not set
+CONFIG_TEST=y
+CONFIG_EXAMPLE_TEST=y