""" Tests of regrtest.py. Note: test_regrtest cannot be run twice in parallel. """ import argparse import contextlib import faulthandler import getopt import io import os.path import platform import re import subprocess import sys import textwrap import unittest from test import libregrtest from test import support Py_DEBUG = hasattr(sys, 'getobjects') 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 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_slaveargs(self): ns = libregrtest._parse_args(['--slaveargs', '[[], {}]']) self.assertEqual(ns.slaveargs, '[[], {}]') self.checkError(['--slaveargs'], '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_slow(self): for opt in '-o', '--slow': 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) 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') 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.RESOURCE_NAMES) 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') 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, '2', '-l'], "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']) class BaseTestCase(unittest.TestCase): TEST_UNIQUE_ID = 1 TESTNAME_PREFIX = 'test_regrtest_' TESTNAME_REGEX = r'test_[a-z0-9_]+' def setUp(self): self.testdir = os.path.join(ROOT_DIR, 'Lib', 'test') # When test_regrtest is interrupted by CTRL+c, it can leave # temporary test files remove = [entry.path for entry in os.scandir(self.testdir) if (entry.name.startswith(self.TESTNAME_PREFIX) and entry.name.endswith(".py"))] for path in remove: print("WARNING: test_regrtest: remove %s" % path) support.unlink(path) def create_test(self, name=None, code=''): if not name: name = 'noop%s' % BaseTestCase.TEST_UNIQUE_ID BaseTestCase.TEST_UNIQUE_ID += 1 # test_regrtest cannot be run twice in parallel because # of setUp() and create_test() name = self.TESTNAME_PREFIX + "%s_%s" % (os.getpid(), name) path = os.path.join(self.testdir, name + '.py') self.addCleanup(support.unlink, path) # Use 'x' mode to ensure that we do not override existing tests with open(path, 'x', encoding='utf-8') as fp: fp.write(code) 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'^\[ *[0-9]+(?:/ *[0-9]+)?\] (%s)$' % self.TESTNAME_REGEX parser = re.finditer(regex, output, re.MULTILINE) return list(match.group(1) for match in parser) def check_executed_tests(self, output, tests, skipped=(), failed=(), omitted=(), randomize=False): if isinstance(tests, str): tests = [tests] if isinstance(skipped, str): skipped = [skipped] if isinstance(failed, str): failed = [failed] if isinstance(omitted, str): omitted = [omitted] ntest = len(tests) nskipped = len(skipped) nfailed = len(failed) nomitted = len(omitted) executed = self.parse_executed_tests(output) if randomize: self.assertEqual(set(executed), set(tests), output) else: self.assertEqual(executed, tests, output) def plural(count): return 's' if count != 1 else '' def list_regex(line_format, tests): count = len(tests) names = ' '.join(sorted(tests)) regex = line_format % (count, plural(count)) regex = r'%s:\n %s$' % (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 omitted: regex = list_regex('%s test%s omitted', omitted) self.check_line(output, regex) good = ntest - nskipped - nfailed - nomitted 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) 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'] 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(ROOT_DIR, 'Lib', 'test', '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(ROOT_DIR, 'Lib', 'test', 'autotest.py') args = [*self.python_args, script, *self.regrtest_args, *self.tests] self.run_tests(args) def test_tools_script_run_tests(self): # Tools/scripts/run_tests.py script = os.path.join(ROOT_DIR, 'Tools', 'scripts', 'run_tests.py') self.run_tests([script, *self.tests]) def run_batch(self, *args): proc = self.run_command(args) self.check_output(proc.stdout) @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 = [] 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') 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, *args, **kw): return self.run_python(['-m', 'test', *args], **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() test_failing = self.create_test(code=code) tests = [test_ok, test_failing] output = self.run_tests(*tests, exitcode=1) 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 = 'from test import support\nsupport.requires(%r)' % 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) 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) def test_interrupted(self): code = TEST_INTERRUPTED test = self.create_test("sigint", code=code) output = self.run_tests(test, exitcode=1) self.check_executed_tests(output, test, omitted=test) def test_slow(self): # test --slow tests = [self.create_test() for index in range(3)] output = self.run_tests("--slow", *tests) self.check_executed_tests(output, tests) regex = ('10 slowest tests:\n' '(?:%s: [0-9]+\.[0-9]+s\n){%s}' % (self.TESTNAME_REGEX, len(tests))) self.check_line(output, regex) def test_slow_interrupted(self): # Issue #25373: test --slow with an interrupted test code = TEST_INTERRUPTED test = self.create_test("sigint", code=code) for multiprocessing in (False, True): if multiprocessing: args = ("--slow", "-j2", test) else: args = ("--slow", test) output = self.run_tests(*args, exitcode=1) self.check_executed_tests(output, test, omitted=test) regex = ('10 slowest tests:\n') self.check_line(output, regex) self.check_line(output, 'Test suite interrupted by signal SIGINT.') def test_coverage(self): # test --coverage test = self.create_test() output = self.run_tests("--coverage", test) self.check_executed_tests(output, [test]) regex = ('lines +cov% +module +\(path\)\n' '(?: *[0-9]+ *[0-9]{1,2}% *[^ ]+ +\([^)]+\)+)+') self.check_line(output, regex) def test_wait(self): # test --wait test = self.create_test() 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 unittest class ForeverTester(unittest.TestCase): RUN = 1 def test_run(self): ForeverTester.RUN += 1 if ForeverTester.RUN > 3: self.fail("fail at the 3rd runs") """) test = self.create_test(code=code) output = self.run_tests('--forever', test, exitcode=1) self.check_executed_tests(output, [test]*3, failed=test) @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 # Issue #25306: Disable popups and logs to stderr on assertion # failures in MSCRT try: import msvcrt msvcrt.CrtSetReportMode except (ImportError, AttributeError): # no Windows, o release build pass else: for m in [msvcrt.CRT_WARN, msvcrt.CRT_ERROR, msvcrt.CRT_ASSERT]: msvcrt.CrtSetReportMode(m, 0) class FDLeakTest(unittest.TestCase): def test_leak(self): fd = os.open(__file__, os.O_RDONLY) # bug: never cloes the file descriptor """) test = self.create_test(code=code) filename = 'reflog.txt' self.addCleanup(support.unlink, filename) output = self.run_tests('--huntrleaks', '3:3:', test, exitcode=1, 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] file descriptors, sum=3\n' % test self.check_line(output, re.escape(line2)) with open(filename) as fp: reflog = fp.read() self.assertEqual(reflog, line2) 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) if __name__ == '__main__': unittest.main()