""" Tests of regrtest.py. Note: test_regrtest cannot be run twice in parallel. """ import contextlib import faulthandler 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)) LOG_PREFIX = r'[0-9]+:[0-9]+:[0-9]+ (?:load avg: [0-9]+\.[0-9]{2} )?' TEST_INTERRUPTED = textwrap.dedent(""" from signal import SIGINT try: from _testcapi import raise_signal 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'^%s\[ *[0-9]+(?:/ *[0-9]+)*\] (%s)' % (LOG_PREFIX, 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$' % (regex, names) return regex if skipped: regex = list_regex('%s test%s skipped', skipped) self.check_line(output, regex) if failed: regex = list_regex('%s test%s failed', failed) self.check_line(output, regex) if env_changed: regex = list_regex('%s test%s altered the execution environment', env_changed) self.check_line(output, regex) if omitted: regex = list_regex('%s test%s omitted', omitted) self.check_line(output, regex) if rerun: regex = list_regex('%s re-run test%s', rerun) self.check_line(output, regex) regex = LOG_PREFIX + r"Re-running failed tests in verbose mode" self.check_line(output, regex) for test_name in rerun: regex = LOG_PREFIX + f"Re-running {test_name} in verbose mode" self.check_line(output, regex) if no_test_ran: regex = list_regex('%s test%s run no tests', no_test_ran) self.check_line(output, regex) good = (len(tests) - len(skipped) - len(failed) - len(omitted) - len(env_changed) - len(no_test_ran)) if good: regex = r'%s test%s OK\.$' % (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.PIPE 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 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.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.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_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), '1.5 sec') self.assertEqual(utils.format_duration(1), '1.0 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()