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"""
Tests of regrtest.py.
Note: test_regrtest cannot be run twice in parallel.
"""
import contextlib
import faulthandler
import glob
import io
import os.path
import platform
import re
import subprocess
import sys
import sysconfig
import tempfile
import textwrap
import unittest
from test import libregrtest
from test import support
from test.libregrtest import utils
Py_DEBUG = hasattr(sys, 'gettotalrefcount')
ROOT_DIR = os.path.join(os.path.dirname(__file__), '..', '..')
ROOT_DIR = os.path.abspath(os.path.normpath(ROOT_DIR))
TEST_INTERRUPTED = textwrap.dedent("""
from signal import SIGINT, raise_signal
try:
raise_signal(SIGINT)
except ImportError:
import os
os.kill(os.getpid(), SIGINT)
""")
class ParseArgsTestCase(unittest.TestCase):
"""
Test regrtest's argument parsing, function _parse_args().
"""
def checkError(self, args, msg):
with support.captured_stderr() as err, self.assertRaises(SystemExit):
libregrtest._parse_args(args)
self.assertIn(msg, err.getvalue())
def test_help(self):
for opt in '-h', '--help':
with self.subTest(opt=opt):
with support.captured_stdout() as out, \
self.assertRaises(SystemExit):
libregrtest._parse_args([opt])
self.assertIn('Run Python regression tests.', out.getvalue())
@unittest.skipUnless(hasattr(faulthandler, 'dump_traceback_later'),
"faulthandler.dump_traceback_later() required")
def test_timeout(self):
ns = libregrtest._parse_args(['--timeout', '4.2'])
self.assertEqual(ns.timeout, 4.2)
self.checkError(['--timeout'], 'expected one argument')
self.checkError(['--timeout', 'foo'], 'invalid float value')
def test_wait(self):
ns = libregrtest._parse_args(['--wait'])
self.assertTrue(ns.wait)
def test_worker_args(self):
ns = libregrtest._parse_args(['--worker-args', '[[], {}]'])
self.assertEqual(ns.worker_args, '[[], {}]')
self.checkError(['--worker-args'], 'expected one argument')
def test_start(self):
for opt in '-S', '--start':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, 'foo'])
self.assertEqual(ns.start, 'foo')
self.checkError([opt], 'expected one argument')
def test_verbose(self):
ns = libregrtest._parse_args(['-v'])
self.assertEqual(ns.verbose, 1)
ns = libregrtest._parse_args(['-vvv'])
self.assertEqual(ns.verbose, 3)
ns = libregrtest._parse_args(['--verbose'])
self.assertEqual(ns.verbose, 1)
ns = libregrtest._parse_args(['--verbose'] * 3)
self.assertEqual(ns.verbose, 3)
ns = libregrtest._parse_args([])
self.assertEqual(ns.verbose, 0)
def test_verbose2(self):
for opt in '-w', '--verbose2':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.verbose2)
def test_verbose3(self):
for opt in '-W', '--verbose3':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.verbose3)
def test_quiet(self):
for opt in '-q', '--quiet':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.quiet)
self.assertEqual(ns.verbose, 0)
def test_slowest(self):
for opt in '-o', '--slowest':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.print_slow)
def test_header(self):
ns = libregrtest._parse_args(['--header'])
self.assertTrue(ns.header)
ns = libregrtest._parse_args(['--verbose'])
self.assertTrue(ns.header)
def test_randomize(self):
for opt in '-r', '--randomize':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.randomize)
def test_randseed(self):
ns = libregrtest._parse_args(['--randseed', '12345'])
self.assertEqual(ns.random_seed, 12345)
self.assertTrue(ns.randomize)
self.checkError(['--randseed'], 'expected one argument')
self.checkError(['--randseed', 'foo'], 'invalid int value')
def test_fromfile(self):
for opt in '-f', '--fromfile':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, 'foo'])
self.assertEqual(ns.fromfile, 'foo')
self.checkError([opt], 'expected one argument')
self.checkError([opt, 'foo', '-s'], "don't go together")
def test_exclude(self):
for opt in '-x', '--exclude':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.exclude)
def test_single(self):
for opt in '-s', '--single':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.single)
self.checkError([opt, '-f', 'foo'], "don't go together")
def test_match(self):
for opt in '-m', '--match':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, 'pattern'])
self.assertEqual(ns.match_tests, ['pattern'])
self.checkError([opt], 'expected one argument')
ns = libregrtest._parse_args(['-m', 'pattern1',
'-m', 'pattern2'])
self.assertEqual(ns.match_tests, ['pattern1', 'pattern2'])
self.addCleanup(support.unlink, support.TESTFN)
with open(support.TESTFN, "w") as fp:
print('matchfile1', file=fp)
print('matchfile2', file=fp)
filename = os.path.abspath(support.TESTFN)
ns = libregrtest._parse_args(['-m', 'match',
'--matchfile', filename])
self.assertEqual(ns.match_tests,
['match', 'matchfile1', 'matchfile2'])
def test_failfast(self):
for opt in '-G', '--failfast':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, '-v'])
self.assertTrue(ns.failfast)
ns = libregrtest._parse_args([opt, '-W'])
self.assertTrue(ns.failfast)
self.checkError([opt], '-G/--failfast needs either -v or -W')
def test_use(self):
for opt in '-u', '--use':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, 'gui,network'])
self.assertEqual(ns.use_resources, ['gui', 'network'])
ns = libregrtest._parse_args([opt, 'gui,none,network'])
self.assertEqual(ns.use_resources, ['network'])
expected = list(libregrtest.ALL_RESOURCES)
expected.remove('gui')
ns = libregrtest._parse_args([opt, 'all,-gui'])
self.assertEqual(ns.use_resources, expected)
self.checkError([opt], 'expected one argument')
self.checkError([opt, 'foo'], 'invalid resource')
# all + a resource not part of "all"
ns = libregrtest._parse_args([opt, 'all,tzdata'])
self.assertEqual(ns.use_resources,
list(libregrtest.ALL_RESOURCES) + ['tzdata'])
# test another resource which is not part of "all"
ns = libregrtest._parse_args([opt, 'extralargefile'])
self.assertEqual(ns.use_resources, ['extralargefile'])
def test_memlimit(self):
for opt in '-M', '--memlimit':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, '4G'])
self.assertEqual(ns.memlimit, '4G')
self.checkError([opt], 'expected one argument')
def test_testdir(self):
ns = libregrtest._parse_args(['--testdir', 'foo'])
self.assertEqual(ns.testdir, os.path.join(support.SAVEDCWD, 'foo'))
self.checkError(['--testdir'], 'expected one argument')
def test_runleaks(self):
for opt in '-L', '--runleaks':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.runleaks)
def test_huntrleaks(self):
for opt in '-R', '--huntrleaks':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, ':'])
self.assertEqual(ns.huntrleaks, (5, 4, 'reflog.txt'))
ns = libregrtest._parse_args([opt, '6:'])
self.assertEqual(ns.huntrleaks, (6, 4, 'reflog.txt'))
ns = libregrtest._parse_args([opt, ':3'])
self.assertEqual(ns.huntrleaks, (5, 3, 'reflog.txt'))
ns = libregrtest._parse_args([opt, '6:3:leaks.log'])
self.assertEqual(ns.huntrleaks, (6, 3, 'leaks.log'))
self.checkError([opt], 'expected one argument')
self.checkError([opt, '6'],
'needs 2 or 3 colon-separated arguments')
self.checkError([opt, 'foo:'], 'invalid huntrleaks value')
self.checkError([opt, '6:foo'], 'invalid huntrleaks value')
def test_multiprocess(self):
for opt in '-j', '--multiprocess':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, '2'])
self.assertEqual(ns.use_mp, 2)
self.checkError([opt], 'expected one argument')
self.checkError([opt, 'foo'], 'invalid int value')
self.checkError([opt, '2', '-T'], "don't go together")
self.checkError([opt, '0', '-T'], "don't go together")
def test_coverage(self):
for opt in '-T', '--coverage':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.trace)
def test_coverdir(self):
for opt in '-D', '--coverdir':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, 'foo'])
self.assertEqual(ns.coverdir,
os.path.join(support.SAVEDCWD, 'foo'))
self.checkError([opt], 'expected one argument')
def test_nocoverdir(self):
for opt in '-N', '--nocoverdir':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertIsNone(ns.coverdir)
def test_threshold(self):
for opt in '-t', '--threshold':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt, '1000'])
self.assertEqual(ns.threshold, 1000)
self.checkError([opt], 'expected one argument')
self.checkError([opt, 'foo'], 'invalid int value')
def test_nowindows(self):
for opt in '-n', '--nowindows':
with self.subTest(opt=opt):
with contextlib.redirect_stderr(io.StringIO()) as stderr:
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.nowindows)
err = stderr.getvalue()
self.assertIn('the --nowindows (-n) option is deprecated', err)
def test_forever(self):
for opt in '-F', '--forever':
with self.subTest(opt=opt):
ns = libregrtest._parse_args([opt])
self.assertTrue(ns.forever)
def test_unrecognized_argument(self):
self.checkError(['--xxx'], 'usage:')
def test_long_option__partial(self):
ns = libregrtest._parse_args(['--qui'])
self.assertTrue(ns.quiet)
self.assertEqual(ns.verbose, 0)
def test_two_options(self):
ns = libregrtest._parse_args(['--quiet', '--exclude'])
self.assertTrue(ns.quiet)
self.assertEqual(ns.verbose, 0)
self.assertTrue(ns.exclude)
def test_option_with_empty_string_value(self):
ns = libregrtest._parse_args(['--start', ''])
self.assertEqual(ns.start, '')
def test_arg(self):
ns = libregrtest._parse_args(['foo'])
self.assertEqual(ns.args, ['foo'])
def test_option_and_arg(self):
ns = libregrtest._parse_args(['--quiet', 'foo'])
self.assertTrue(ns.quiet)
self.assertEqual(ns.verbose, 0)
self.assertEqual(ns.args, ['foo'])
def test_arg_option_arg(self):
ns = libregrtest._parse_args(['test_unaryop', '-v', 'test_binop'])
self.assertEqual(ns.verbose, 1)
self.assertEqual(ns.args, ['test_unaryop', 'test_binop'])
def test_unknown_option(self):
self.checkError(['--unknown-option'],
'unrecognized arguments: --unknown-option')
class BaseTestCase(unittest.TestCase):
TEST_UNIQUE_ID = 1
TESTNAME_PREFIX = 'test_regrtest_'
TESTNAME_REGEX = r'test_[a-zA-Z0-9_]+'
def setUp(self):
self.testdir = os.path.realpath(os.path.dirname(__file__))
self.tmptestdir = tempfile.mkdtemp()
self.addCleanup(support.rmtree, self.tmptestdir)
def create_test(self, name=None, code=None):
if not name:
name = 'noop%s' % BaseTestCase.TEST_UNIQUE_ID
BaseTestCase.TEST_UNIQUE_ID += 1
if code is None:
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_empty_test(self):
pass
""")
# test_regrtest cannot be run twice in parallel because
# of setUp() and create_test()
name = self.TESTNAME_PREFIX + name
path = os.path.join(self.tmptestdir, name + '.py')
self.addCleanup(support.unlink, path)
# Use 'x' mode to ensure that we do not override existing tests
try:
with open(path, 'x', encoding='utf-8') as fp:
fp.write(code)
except PermissionError as exc:
if not sysconfig.is_python_build():
self.skipTest("cannot write %s: %s" % (path, exc))
raise
return name
def regex_search(self, regex, output):
match = re.search(regex, output, re.MULTILINE)
if not match:
self.fail("%r not found in %r" % (regex, output))
return match
def check_line(self, output, regex):
regex = re.compile(r'^' + regex, re.MULTILINE)
self.assertRegex(output, regex)
def parse_executed_tests(self, output):
regex = (r'^[0-9]+:[0-9]+:[0-9]+ (?:load avg: [0-9]+\.[0-9]{2} )?\[ *[0-9]+(?:/ *[0-9]+)*\] (%s)'
% self.TESTNAME_REGEX)
parser = re.finditer(regex, output, re.MULTILINE)
return list(match.group(1) for match in parser)
def check_executed_tests(self, output, tests, skipped=(), failed=(),
env_changed=(), omitted=(),
rerun=(), no_test_ran=(),
randomize=False, interrupted=False,
fail_env_changed=False):
if isinstance(tests, str):
tests = [tests]
if isinstance(skipped, str):
skipped = [skipped]
if isinstance(failed, str):
failed = [failed]
if isinstance(env_changed, str):
env_changed = [env_changed]
if isinstance(omitted, str):
omitted = [omitted]
if isinstance(rerun, str):
rerun = [rerun]
if isinstance(no_test_ran, str):
no_test_ran = [no_test_ran]
executed = self.parse_executed_tests(output)
if randomize:
self.assertEqual(set(executed), set(tests), output)
else:
self.assertEqual(executed, tests, output)
def plural(count):
return 's' if count != 1 else ''
def list_regex(line_format, tests):
count = len(tests)
names = ' '.join(sorted(tests))
regex = line_format % (count, plural(count))
regex = r'%s:\n %s$' % (regex, names)
return regex
if skipped:
regex = list_regex('%s test%s skipped', skipped)
self.check_line(output, regex)
if failed:
regex = list_regex('%s test%s failed', failed)
self.check_line(output, regex)
if env_changed:
regex = list_regex('%s test%s altered the execution environment',
env_changed)
self.check_line(output, regex)
if omitted:
regex = list_regex('%s test%s omitted', omitted)
self.check_line(output, regex)
if rerun:
regex = list_regex('%s re-run test%s', rerun)
self.check_line(output, regex)
self.check_line(output, "Re-running failed tests in verbose mode")
for test_name in rerun:
regex = f"Re-running {test_name} in verbose mode"
self.check_line(output, regex)
if no_test_ran:
regex = list_regex('%s test%s run no tests', no_test_ran)
self.check_line(output, regex)
good = (len(tests) - len(skipped) - len(failed)
- len(omitted) - len(env_changed) - len(no_test_ran))
if good:
regex = r'%s test%s OK\.$' % (good, plural(good))
if not skipped and not failed and good > 1:
regex = 'All %s' % regex
self.check_line(output, regex)
if interrupted:
self.check_line(output, 'Test suite interrupted by signal SIGINT.')
result = []
if failed:
result.append('FAILURE')
elif fail_env_changed and env_changed:
result.append('ENV CHANGED')
if interrupted:
result.append('INTERRUPTED')
if not any((good, result, failed, interrupted, skipped,
env_changed, fail_env_changed)):
result.append("NO TEST RUN")
elif not result:
result.append('SUCCESS')
result = ', '.join(result)
if rerun:
self.check_line(output, 'Tests result: FAILURE')
result = 'FAILURE then %s' % result
self.check_line(output, 'Tests result: %s' % result)
def parse_random_seed(self, output):
match = self.regex_search(r'Using random seed ([0-9]+)', output)
randseed = int(match.group(1))
self.assertTrue(0 <= randseed <= 10000000, randseed)
return randseed
def run_command(self, args, input=None, exitcode=0, **kw):
if not input:
input = ''
if 'stderr' not in kw:
kw['stderr'] = subprocess.STDOUT
proc = subprocess.run(args,
universal_newlines=True,
input=input,
stdout=subprocess.PIPE,
**kw)
if proc.returncode != exitcode:
msg = ("Command %s failed with exit code %s\n"
"\n"
"stdout:\n"
"---\n"
"%s\n"
"---\n"
% (str(args), proc.returncode, proc.stdout))
if proc.stderr:
msg += ("\n"
"stderr:\n"
"---\n"
"%s"
"---\n"
% proc.stderr)
self.fail(msg)
return proc
def run_python(self, args, **kw):
args = [sys.executable, '-X', 'faulthandler', '-I', *args]
proc = self.run_command(args, **kw)
return proc.stdout
class CheckActualTests(BaseTestCase):
"""
Check that regrtest appears to find the expected set of tests.
"""
def test_finds_expected_number_of_tests(self):
args = ['-Wd', '-E', '-bb', '-m', 'test.regrtest', '--list-tests']
output = self.run_python(args)
rough_number_of_tests_found = len(output.splitlines())
actual_testsuite_glob = os.path.join(os.path.dirname(__file__),
'test*.py')
rough_counted_test_py_files = len(glob.glob(actual_testsuite_glob))
# We're not trying to duplicate test finding logic in here,
# just give a rough estimate of how many there should be and
# be near that. This is a regression test to prevent mishaps
# such as https://bugs.python.org/issue37667 in the future.
# If you need to change the values in here during some
# mythical future test suite reorganization, don't go
# overboard with logic and keep that goal in mind.
self.assertGreater(rough_number_of_tests_found,
rough_counted_test_py_files*9//10,
msg='Unexpectedly low number of tests found in:\n'
f'{", ".join(output.splitlines())}')
class ProgramsTestCase(BaseTestCase):
"""
Test various ways to run the Python test suite. Use options close
to options used on the buildbot.
"""
NTEST = 4
def setUp(self):
super().setUp()
# Create NTEST tests doing nothing
self.tests = [self.create_test() for index in range(self.NTEST)]
self.python_args = ['-Wd', '-E', '-bb']
self.regrtest_args = ['-uall', '-rwW',
'--testdir=%s' % self.tmptestdir]
if hasattr(faulthandler, 'dump_traceback_later'):
self.regrtest_args.extend(('--timeout', '3600', '-j4'))
if sys.platform == 'win32':
self.regrtest_args.append('-n')
def check_output(self, output):
self.parse_random_seed(output)
self.check_executed_tests(output, self.tests, randomize=True)
def run_tests(self, args):
output = self.run_python(args)
self.check_output(output)
def test_script_regrtest(self):
# Lib/test/regrtest.py
script = os.path.join(self.testdir, 'regrtest.py')
args = [*self.python_args, script, *self.regrtest_args, *self.tests]
self.run_tests(args)
def test_module_test(self):
# -m test
args = [*self.python_args, '-m', 'test',
*self.regrtest_args, *self.tests]
self.run_tests(args)
def test_module_regrtest(self):
# -m test.regrtest
args = [*self.python_args, '-m', 'test.regrtest',
*self.regrtest_args, *self.tests]
self.run_tests(args)
def test_module_autotest(self):
# -m test.autotest
args = [*self.python_args, '-m', 'test.autotest',
*self.regrtest_args, *self.tests]
self.run_tests(args)
def test_module_from_test_autotest(self):
# from test import autotest
code = 'from test import autotest'
args = [*self.python_args, '-c', code,
*self.regrtest_args, *self.tests]
self.run_tests(args)
def test_script_autotest(self):
# Lib/test/autotest.py
script = os.path.join(self.testdir, 'autotest.py')
args = [*self.python_args, script, *self.regrtest_args, *self.tests]
self.run_tests(args)
@unittest.skipUnless(sysconfig.is_python_build(),
'run_tests.py script is not installed')
def test_tools_script_run_tests(self):
# Tools/scripts/run_tests.py
script = os.path.join(ROOT_DIR, 'Tools', 'scripts', 'run_tests.py')
args = [script, *self.regrtest_args, *self.tests]
self.run_tests(args)
def run_batch(self, *args):
proc = self.run_command(args)
self.check_output(proc.stdout)
@unittest.skipUnless(sysconfig.is_python_build(),
'test.bat script is not installed')
@unittest.skipUnless(sys.platform == 'win32', 'Windows only')
def test_tools_buildbot_test(self):
# Tools\buildbot\test.bat
script = os.path.join(ROOT_DIR, 'Tools', 'buildbot', 'test.bat')
test_args = ['--testdir=%s' % self.tmptestdir]
if platform.machine() == 'ARM64':
test_args.append('-arm64') # ARM 64-bit build
elif platform.machine() == 'ARM':
test_args.append('-arm32') # 32-bit ARM build
elif platform.architecture()[0] == '64bit':
test_args.append('-x64') # 64-bit build
if not Py_DEBUG:
test_args.append('+d') # Release build, use python.exe
self.run_batch(script, *test_args, *self.tests)
@unittest.skipUnless(sys.platform == 'win32', 'Windows only')
def test_pcbuild_rt(self):
# PCbuild\rt.bat
script = os.path.join(ROOT_DIR, r'PCbuild\rt.bat')
if not os.path.isfile(script):
self.skipTest(f'File "{script}" does not exist')
rt_args = ["-q"] # Quick, don't run tests twice
if platform.machine() == 'ARM64':
rt_args.append('-arm64') # ARM 64-bit build
elif platform.machine() == 'ARM':
rt_args.append('-arm32') # 32-bit ARM build
elif platform.architecture()[0] == '64bit':
rt_args.append('-x64') # 64-bit build
if Py_DEBUG:
rt_args.append('-d') # Debug build, use python_d.exe
self.run_batch(script, *rt_args, *self.regrtest_args, *self.tests)
class ArgsTestCase(BaseTestCase):
"""
Test arguments of the Python test suite.
"""
def run_tests(self, *testargs, **kw):
cmdargs = ['-m', 'test', '--testdir=%s' % self.tmptestdir, *testargs]
return self.run_python(cmdargs, **kw)
def test_failing_test(self):
# test a failing test
code = textwrap.dedent("""
import unittest
class FailingTest(unittest.TestCase):
def test_failing(self):
self.fail("bug")
""")
test_ok = self.create_test('ok')
test_failing = self.create_test('failing', code=code)
tests = [test_ok, test_failing]
output = self.run_tests(*tests, exitcode=2)
self.check_executed_tests(output, tests, failed=test_failing)
def test_resources(self):
# test -u command line option
tests = {}
for resource in ('audio', 'network'):
code = textwrap.dedent("""
from test import support; support.requires(%r)
import unittest
class PassingTest(unittest.TestCase):
def test_pass(self):
pass
""" % resource)
tests[resource] = self.create_test(resource, code)
test_names = sorted(tests.values())
# -u all: 2 resources enabled
output = self.run_tests('-u', 'all', *test_names)
self.check_executed_tests(output, test_names)
# -u audio: 1 resource enabled
output = self.run_tests('-uaudio', *test_names)
self.check_executed_tests(output, test_names,
skipped=tests['network'])
# no option: 0 resources enabled
output = self.run_tests(*test_names)
self.check_executed_tests(output, test_names,
skipped=test_names)
def test_random(self):
# test -r and --randseed command line option
code = textwrap.dedent("""
import random
print("TESTRANDOM: %s" % random.randint(1, 1000))
""")
test = self.create_test('random', code)
# first run to get the output with the random seed
output = self.run_tests('-r', test)
randseed = self.parse_random_seed(output)
match = self.regex_search(r'TESTRANDOM: ([0-9]+)', output)
test_random = int(match.group(1))
# try to reproduce with the random seed
output = self.run_tests('-r', '--randseed=%s' % randseed, test)
randseed2 = self.parse_random_seed(output)
self.assertEqual(randseed2, randseed)
match = self.regex_search(r'TESTRANDOM: ([0-9]+)', output)
test_random2 = int(match.group(1))
self.assertEqual(test_random2, test_random)
def test_fromfile(self):
# test --fromfile
tests = [self.create_test() for index in range(5)]
# Write the list of files using a format similar to regrtest output:
# [1/2] test_1
# [2/2] test_2
filename = support.TESTFN
self.addCleanup(support.unlink, filename)
# test format '0:00:00 [2/7] test_opcodes -- test_grammar took 0 sec'
with open(filename, "w") as fp:
previous = None
for index, name in enumerate(tests, 1):
line = ("00:00:%02i [%s/%s] %s"
% (index, index, len(tests), name))
if previous:
line += " -- %s took 0 sec" % previous
print(line, file=fp)
previous = name
output = self.run_tests('--fromfile', filename)
self.check_executed_tests(output, tests)
# test format '[2/7] test_opcodes'
with open(filename, "w") as fp:
for index, name in enumerate(tests, 1):
print("[%s/%s] %s" % (index, len(tests), name), file=fp)
output = self.run_tests('--fromfile', filename)
self.check_executed_tests(output, tests)
# test format 'test_opcodes'
with open(filename, "w") as fp:
for name in tests:
print(name, file=fp)
output = self.run_tests('--fromfile', filename)
self.check_executed_tests(output, tests)
# test format 'Lib/test/test_opcodes.py'
with open(filename, "w") as fp:
for name in tests:
print('Lib/test/%s.py' % name, file=fp)
output = self.run_tests('--fromfile', filename)
self.check_executed_tests(output, tests)
def test_interrupted(self):
code = TEST_INTERRUPTED
test = self.create_test('sigint', code=code)
output = self.run_tests(test, exitcode=130)
self.check_executed_tests(output, test, omitted=test,
interrupted=True)
def test_slowest(self):
# test --slowest
tests = [self.create_test() for index in range(3)]
output = self.run_tests("--slowest", *tests)
self.check_executed_tests(output, tests)
regex = ('10 slowest tests:\n'
'(?:- %s: .*\n){%s}'
% (self.TESTNAME_REGEX, len(tests)))
self.check_line(output, regex)
def test_slowest_interrupted(self):
# Issue #25373: test --slowest with an interrupted test
code = TEST_INTERRUPTED
test = self.create_test("sigint", code=code)
for multiprocessing in (False, True):
with self.subTest(multiprocessing=multiprocessing):
if multiprocessing:
args = ("--slowest", "-j2", test)
else:
args = ("--slowest", test)
output = self.run_tests(*args, exitcode=130)
self.check_executed_tests(output, test,
omitted=test, interrupted=True)
regex = ('10 slowest tests:\n')
self.check_line(output, regex)
def test_coverage(self):
# test --coverage
test = self.create_test('coverage')
output = self.run_tests("--coverage", test)
self.check_executed_tests(output, [test])
regex = (r'lines +cov% +module +\(path\)\n'
r'(?: *[0-9]+ *[0-9]{1,2}% *[^ ]+ +\([^)]+\)+)+')
self.check_line(output, regex)
def test_wait(self):
# test --wait
test = self.create_test('wait')
output = self.run_tests("--wait", test, input='key')
self.check_line(output, 'Press any key to continue')
def test_forever(self):
# test --forever
code = textwrap.dedent("""
import builtins
import unittest
class ForeverTester(unittest.TestCase):
def test_run(self):
# Store the state in the builtins module, because the test
# module is reload at each run
if 'RUN' in builtins.__dict__:
builtins.__dict__['RUN'] += 1
if builtins.__dict__['RUN'] >= 3:
self.fail("fail at the 3rd runs")
else:
builtins.__dict__['RUN'] = 1
""")
test = self.create_test('forever', code=code)
output = self.run_tests('--forever', test, exitcode=2)
self.check_executed_tests(output, [test]*3, failed=test)
def check_leak(self, code, what):
test = self.create_test('huntrleaks', code=code)
filename = 'reflog.txt'
self.addCleanup(support.unlink, filename)
output = self.run_tests('--huntrleaks', '3:3:', test,
exitcode=2,
stderr=subprocess.STDOUT)
self.check_executed_tests(output, [test], failed=test)
line = 'beginning 6 repetitions\n123456\n......\n'
self.check_line(output, re.escape(line))
line2 = '%s leaked [1, 1, 1] %s, sum=3\n' % (test, what)
self.assertIn(line2, output)
with open(filename) as fp:
reflog = fp.read()
self.assertIn(line2, reflog)
@unittest.skipUnless(Py_DEBUG, 'need a debug build')
def test_huntrleaks(self):
# test --huntrleaks
code = textwrap.dedent("""
import unittest
GLOBAL_LIST = []
class RefLeakTest(unittest.TestCase):
def test_leak(self):
GLOBAL_LIST.append(object())
""")
self.check_leak(code, 'references')
@unittest.skipUnless(Py_DEBUG, 'need a debug build')
def test_huntrleaks_fd_leak(self):
# test --huntrleaks for file descriptor leak
code = textwrap.dedent("""
import os
import unittest
class FDLeakTest(unittest.TestCase):
def test_leak(self):
fd = os.open(__file__, os.O_RDONLY)
# bug: never close the file descriptor
""")
self.check_leak(code, 'file descriptors')
def test_list_tests(self):
# test --list-tests
tests = [self.create_test() for i in range(5)]
output = self.run_tests('--list-tests', *tests)
self.assertEqual(output.rstrip().splitlines(),
tests)
def test_list_cases(self):
# test --list-cases
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_method1(self):
pass
def test_method2(self):
pass
""")
testname = self.create_test(code=code)
# Test --list-cases
all_methods = ['%s.Tests.test_method1' % testname,
'%s.Tests.test_method2' % testname]
output = self.run_tests('--list-cases', testname)
self.assertEqual(output.splitlines(), all_methods)
# Test --list-cases with --match
all_methods = ['%s.Tests.test_method1' % testname]
output = self.run_tests('--list-cases',
'-m', 'test_method1',
testname)
self.assertEqual(output.splitlines(), all_methods)
@support.cpython_only
def test_crashed(self):
# Any code which causes a crash
code = 'import faulthandler; faulthandler._sigsegv()'
crash_test = self.create_test(name="crash", code=code)
tests = [crash_test]
output = self.run_tests("-j2", *tests, exitcode=2)
self.check_executed_tests(output, tests, failed=crash_test,
randomize=True)
def parse_methods(self, output):
regex = re.compile("^(test[^ ]+).*ok$", flags=re.MULTILINE)
return [match.group(1) for match in regex.finditer(output)]
def test_matchfile(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_method1(self):
pass
def test_method2(self):
pass
def test_method3(self):
pass
def test_method4(self):
pass
""")
all_methods = ['test_method1', 'test_method2',
'test_method3', 'test_method4']
testname = self.create_test(code=code)
# by default, all methods should be run
output = self.run_tests("-v", testname)
methods = self.parse_methods(output)
self.assertEqual(methods, all_methods)
# only run a subset
filename = support.TESTFN
self.addCleanup(support.unlink, filename)
subset = [
# only match the method name
'test_method1',
# match the full identifier
'%s.Tests.test_method3' % testname]
with open(filename, "w") as fp:
for name in subset:
print(name, file=fp)
output = self.run_tests("-v", "--matchfile", filename, testname)
methods = self.parse_methods(output)
subset = ['test_method1', 'test_method3']
self.assertEqual(methods, subset)
def test_env_changed(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_env_changed(self):
open("env_changed", "w").close()
""")
testname = self.create_test(code=code)
# don't fail by default
output = self.run_tests(testname)
self.check_executed_tests(output, [testname], env_changed=testname)
# fail with --fail-env-changed
output = self.run_tests("--fail-env-changed", testname, exitcode=3)
self.check_executed_tests(output, [testname], env_changed=testname,
fail_env_changed=True)
def test_rerun_fail(self):
# FAILURE then FAILURE
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_bug(self):
# test always fail
self.fail("bug")
""")
testname = self.create_test(code=code)
output = self.run_tests("-w", testname, exitcode=2)
self.check_executed_tests(output, [testname],
failed=testname, rerun=testname)
def test_rerun_success(self):
# FAILURE then SUCCESS
code = textwrap.dedent("""
import builtins
import unittest
class Tests(unittest.TestCase):
failed = False
def test_fail_once(self):
if not hasattr(builtins, '_test_failed'):
builtins._test_failed = True
self.fail("bug")
""")
testname = self.create_test(code=code)
output = self.run_tests("-w", testname, exitcode=0)
self.check_executed_tests(output, [testname],
rerun=testname)
def test_no_tests_ran(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_bug(self):
pass
""")
testname = self.create_test(code=code)
output = self.run_tests(testname, "-m", "nosuchtest", exitcode=0)
self.check_executed_tests(output, [testname], no_test_ran=testname)
def test_no_tests_ran_skip(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_skipped(self):
self.skipTest("because")
""")
testname = self.create_test(code=code)
output = self.run_tests(testname, exitcode=0)
self.check_executed_tests(output, [testname])
def test_no_tests_ran_multiple_tests_nonexistent(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_bug(self):
pass
""")
testname = self.create_test(code=code)
testname2 = self.create_test(code=code)
output = self.run_tests(testname, testname2, "-m", "nosuchtest", exitcode=0)
self.check_executed_tests(output, [testname, testname2],
no_test_ran=[testname, testname2])
def test_no_test_ran_some_test_exist_some_not(self):
code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_bug(self):
pass
""")
testname = self.create_test(code=code)
other_code = textwrap.dedent("""
import unittest
class Tests(unittest.TestCase):
def test_other_bug(self):
pass
""")
testname2 = self.create_test(code=other_code)
output = self.run_tests(testname, testname2, "-m", "nosuchtest",
"-m", "test_other_bug", exitcode=0)
self.check_executed_tests(output, [testname, testname2],
no_test_ran=[testname])
@support.cpython_only
def test_findleaks(self):
code = textwrap.dedent(r"""
import _testcapi
import gc
import unittest
@_testcapi.with_tp_del
class Garbage:
def __tp_del__(self):
pass
class Tests(unittest.TestCase):
def test_garbage(self):
# create an uncollectable object
obj = Garbage()
obj.ref_cycle = obj
obj = None
""")
testname = self.create_test(code=code)
output = self.run_tests("--fail-env-changed", testname, exitcode=3)
self.check_executed_tests(output, [testname],
env_changed=[testname],
fail_env_changed=True)
# --findleaks is now basically an alias to --fail-env-changed
output = self.run_tests("--findleaks", testname, exitcode=3)
self.check_executed_tests(output, [testname],
env_changed=[testname],
fail_env_changed=True)
def test_multiprocessing_timeout(self):
code = textwrap.dedent(r"""
import time
import unittest
try:
import faulthandler
except ImportError:
faulthandler = None
class Tests(unittest.TestCase):
# test hangs and so should be stopped by the timeout
def test_sleep(self):
# we want to test regrtest multiprocessing timeout,
# not faulthandler timeout
if faulthandler is not None:
faulthandler.cancel_dump_traceback_later()
time.sleep(60 * 5)
""")
testname = self.create_test(code=code)
output = self.run_tests("-j2", "--timeout=1.0", testname, exitcode=2)
self.check_executed_tests(output, [testname],
failed=testname)
self.assertRegex(output,
re.compile('%s timed out' % testname, re.MULTILINE))
def test_unraisable_exc(self):
# --fail-env-changed must catch unraisable exception
code = textwrap.dedent(r"""
import unittest
import weakref
class MyObject:
pass
def weakref_callback(obj):
raise Exception("weakref callback bug")
class Tests(unittest.TestCase):
def test_unraisable_exc(self):
obj = MyObject()
ref = weakref.ref(obj, weakref_callback)
# call weakref_callback() which logs
# an unraisable exception
obj = None
""")
testname = self.create_test(code=code)
output = self.run_tests("--fail-env-changed", "-v", testname, exitcode=3)
self.check_executed_tests(output, [testname],
env_changed=[testname],
fail_env_changed=True)
self.assertIn("Warning -- Unraisable exception", output)
def test_cleanup(self):
dirname = os.path.join(self.tmptestdir, "test_python_123")
os.mkdir(dirname)
filename = os.path.join(self.tmptestdir, "test_python_456")
open(filename, "wb").close()
names = [dirname, filename]
cmdargs = ['-m', 'test',
'--tempdir=%s' % self.tmptestdir,
'--cleanup']
self.run_python(cmdargs)
for name in names:
self.assertFalse(os.path.exists(name), name)
class TestUtils(unittest.TestCase):
def test_format_duration(self):
self.assertEqual(utils.format_duration(0),
'0 ms')
self.assertEqual(utils.format_duration(1e-9),
'1 ms')
self.assertEqual(utils.format_duration(10e-3),
'10 ms')
self.assertEqual(utils.format_duration(1.5),
'1 sec 500 ms')
self.assertEqual(utils.format_duration(1),
'1 sec')
self.assertEqual(utils.format_duration(2 * 60),
'2 min')
self.assertEqual(utils.format_duration(2 * 60 + 1),
'2 min 1 sec')
self.assertEqual(utils.format_duration(3 * 3600),
'3 hour')
self.assertEqual(utils.format_duration(3 * 3600 + 2 * 60 + 1),
'3 hour 2 min')
self.assertEqual(utils.format_duration(3 * 3600 + 1),
'3 hour 1 sec')
if __name__ == '__main__':
unittest.main()
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