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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# Tests invocation of the interpreter with various command line arguments # Most tests are executed with environment variables ignored # See test_cmd_line_script.py for testing of script execution import os import subprocess import sys import tempfile import textwrap import unittest from test import support from test.support.script_helper import ( spawn_python, kill_python, assert_python_ok, assert_python_failure, interpreter_requires_environment ) # Debug build? Py_DEBUG = hasattr(sys, "gettotalrefcount") # XXX (ncoghlan): Move to script_helper and make consistent with run_python def _kill_python_and_exit_code(p): data = kill_python(p) returncode = p.wait() return data, returncode class CmdLineTest(unittest.TestCase): def test_directories(self): assert_python_failure('.') assert_python_failure('< .') def verify_valid_flag(self, cmd_line): rc, out, err = assert_python_ok(*cmd_line) self.assertTrue(out == b'' or out.endswith(b'\n')) self.assertNotIn(b'Traceback', out) self.assertNotIn(b'Traceback', err) def test_optimize(self): self.verify_valid_flag('-O') self.verify_valid_flag('-OO') def test_site_flag(self): self.verify_valid_flag('-S') def test_usage(self): rc, out, err = assert_python_ok('-h') lines = out.splitlines() self.assertIn(b'usage', lines[0]) # The first line contains the program name, # but the rest should be ASCII-only b''.join(lines[1:]).decode('ascii') def test_version(self): version = ('Python %d.%d' % sys.version_info[:2]).encode("ascii") for switch in '-V', '--version', '-VV': rc, out, err = assert_python_ok(switch) self.assertFalse(err.startswith(version)) self.assertTrue(out.startswith(version)) def test_verbose(self): # -v causes imports to write to stderr. If the write to # stderr itself causes an import to happen (for the output # codec), a recursion loop can occur. rc, out, err = assert_python_ok('-v') self.assertNotIn(b'stack overflow', err) rc, out, err = assert_python_ok('-vv') self.assertNotIn(b'stack overflow', err) @unittest.skipIf(interpreter_requires_environment(), 'Cannot run -E tests when PYTHON env vars are required.') def test_xoptions(self): def get_xoptions(*args): # use subprocess module directly because test.support.script_helper adds # "-X faulthandler" to the command line args = (sys.executable, '-E') + args args += ('-c', 'import sys; print(sys._xoptions)') out = subprocess.check_output(args) opts = eval(out.splitlines()[0]) return opts opts = get_xoptions() self.assertEqual(opts, {}) opts = get_xoptions('-Xa', '-Xb=c,d=e') self.assertEqual(opts, {'a': True, 'b': 'c,d=e'}) def test_showrefcount(self): def run_python(*args): # this is similar to assert_python_ok but doesn't strip # the refcount from stderr. It can be replaced once # assert_python_ok stops doing that. cmd = [sys.executable] cmd.extend(args) PIPE = subprocess.PIPE p = subprocess.Popen(cmd, stdout=PIPE, stderr=PIPE) out, err = p.communicate() p.stdout.close() p.stderr.close() rc = p.returncode self.assertEqual(rc, 0) return rc, out, err code = 'import sys; print(sys._xoptions)' # normally the refcount is hidden rc, out, err = run_python('-c', code) self.assertEqual(out.rstrip(), b'{}') self.assertEqual(err, b'') # "-X showrefcount" shows the refcount, but only in debug builds rc, out, err = run_python('-X', 'showrefcount', '-c', code) self.assertEqual(out.rstrip(), b"{'showrefcount': True}") if Py_DEBUG: self.assertRegex(err, br'^\[\d+ refs, \d+ blocks\]') else: self.assertEqual(err, b'') def test_run_module(self): # Test expected operation of the '-m' switch # Switch needs an argument assert_python_failure('-m') # Check we get an error for a nonexistent module assert_python_failure('-m', 'fnord43520xyz') # Check the runpy module also gives an error for # a nonexistent module assert_python_failure('-m', 'runpy', 'fnord43520xyz') # All good if module is located and run successfully assert_python_ok('-m', 'timeit', '-n', '1') def test_run_module_bug1764407(self): # -m and -i need to play well together # Runs the timeit module and checks the __main__ # namespace has been populated appropriately p = spawn_python('-i', '-m', 'timeit', '-n', '1') p.stdin.write(b'Timer\n') p.stdin.write(b'exit()\n') data = kill_python(p) self.assertTrue(data.find(b'1 loop') != -1) self.assertTrue(data.find(b'__main__.Timer') != -1) def test_relativedir_bug46421(self): # Test `python -m unittest` with a relative directory beginning with ./ # Note: We have to switch to the project's top module's directory, as per # the python unittest wiki. We will switch back when we are done. defaultwd = os.getcwd() projectlibpath = os.path.dirname(__file__).removesuffix("test") with support.change_cwd(projectlibpath): # Testing with and without ./ assert_python_ok('-m', 'unittest', "test/test_longexp.py") assert_python_ok('-m', 'unittest', "./test/test_longexp.py") def test_run_code(self): # Test expected operation of the '-c' switch # Switch needs an argument assert_python_failure('-c') # Check we get an error for an uncaught exception assert_python_failure('-c', 'raise Exception') # All good if execution is successful assert_python_ok('-c', 'pass') @unittest.skipUnless(support.FS_NONASCII, 'need support.FS_NONASCII') def test_non_ascii(self): # Test handling of non-ascii data command = ("assert(ord(%r) == %s)" % (support.FS_NONASCII, ord(support.FS_NONASCII))) assert_python_ok('-c', command) # On Windows, pass bytes to subprocess doesn't test how Python decodes the # command line, but how subprocess does decode bytes to unicode. Python # doesn't decode the command line because Windows provides directly the # arguments as unicode (using wmain() instead of main()). @unittest.skipIf(sys.platform == 'win32', 'Windows has a native unicode API') def test_undecodable_code(self): undecodable = b"\xff" env = os.environ.copy() # Use C locale to get ascii for the locale encoding env['LC_ALL'] = 'C' env['PYTHONCOERCECLOCALE'] = '0' code = ( b'import locale; ' b'print(ascii("' + undecodable + b'"), ' b'locale.getpreferredencoding())') p = subprocess.Popen( [sys.executable, "-c", code], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env) stdout, stderr = p.communicate() if p.returncode == 1: # _Py_char2wchar() decoded b'\xff' as '\udcff' (b'\xff' is not # decodable from ASCII) and run_command() failed on # PyUnicode_AsUTF8String(). This is the expected behaviour on # Linux. pattern = b"Unable to decode the command from the command line:" elif p.returncode == 0: # _Py_char2wchar() decoded b'\xff' as '\xff' even if the locale is # C and the locale encoding is ASCII. It occurs on FreeBSD, Solaris # and Mac OS X. pattern = b"'\\xff' " # The output is followed by the encoding name, an alias to ASCII. # Examples: "US-ASCII" or "646" (ISO 646, on Solaris). else: raise AssertionError("Unknown exit code: %s, output=%a" % (p.returncode, stdout)) if not stdout.startswith(pattern): raise AssertionError("%a doesn't start with %a" % (stdout, pattern)) @unittest.skipIf(sys.platform == 'win32', 'Windows has a native unicode API') def test_invalid_utf8_arg(self): # bpo-35883: Py_DecodeLocale() must escape b'\xfd\xbf\xbf\xbb\xba\xba' # byte sequence with surrogateescape rather than decoding it as the # U+7fffbeba character which is outside the [U+0000; U+10ffff] range of # Python Unicode characters. # # Test with default config, in the C locale, in the Python UTF-8 Mode. code = 'import sys, os; s=os.fsencode(sys.argv[1]); print(ascii(s))' base_cmd = [sys.executable, '-c', code] def run_default(arg): cmd = [sys.executable, '-c', code, arg] return subprocess.run(cmd, stdout=subprocess.PIPE, text=True) def run_c_locale(arg): cmd = [sys.executable, '-c', code, arg] env = dict(os.environ) env['LC_ALL'] = 'C' return subprocess.run(cmd, stdout=subprocess.PIPE, text=True, env=env) def run_utf8_mode(arg): cmd = [sys.executable, '-X', 'utf8', '-c', code, arg] return subprocess.run(cmd, stdout=subprocess.PIPE, text=True) valid_utf8 = 'e:\xe9, euro:\u20ac, non-bmp:\U0010ffff'.encode('utf-8') # invalid UTF-8 byte sequences with a valid UTF-8 sequence # in the middle. invalid_utf8 = ( b'\xff' # invalid byte b'\xc3\xff' # invalid byte sequence b'\xc3\xa9' # valid utf-8: U+00E9 character b'\xed\xa0\x80' # lone surrogate character (invalid) b'\xfd\xbf\xbf\xbb\xba\xba' # character outside [U+0000; U+10ffff] ) test_args = [valid_utf8, invalid_utf8] for run_cmd in (run_default, run_c_locale, run_utf8_mode): with self.subTest(run_cmd=run_cmd): for arg in test_args: proc = run_cmd(arg) self.assertEqual(proc.stdout.rstrip(), ascii(arg)) @unittest.skipUnless((sys.platform == 'darwin' or support.is_android), 'test specific to Mac OS X and Android') def test_osx_android_utf8(self): text = 'e:\xe9, euro:\u20ac, non-bmp:\U0010ffff'.encode('utf-8') code = "import sys; print(ascii(sys.argv[1]))" decoded = text.decode('utf-8', 'surrogateescape') expected = ascii(decoded).encode('ascii') + b'\n' env = os.environ.copy() # C locale gives ASCII locale encoding, but Python uses UTF-8 # to parse the command line arguments on Mac OS X and Android. env['LC_ALL'] = 'C' p = subprocess.Popen( (sys.executable, "-c", code, text), stdout=subprocess.PIPE, env=env) stdout, stderr = p.communicate() self.assertEqual(stdout, expected) self.assertEqual(p.returncode, 0) def test_non_interactive_output_buffering(self): code = textwrap.dedent(""" import sys out = sys.stdout print(out.isatty(), out.write_through, out.line_buffering) err = sys.stderr print(err.isatty(), err.write_through, err.line_buffering) """) args = [sys.executable, '-c', code] proc = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=True) self.assertEqual(proc.stdout, 'False False False\n' 'False False True\n') def test_unbuffered_output(self): # Test expected operation of the '-u' switch for stream in ('stdout', 'stderr'): # Binary is unbuffered code = ("import os, sys; sys.%s.buffer.write(b'x'); os._exit(0)" % stream) rc, out, err = assert_python_ok('-u', '-c', code) data = err if stream == 'stderr' else out self.assertEqual(data, b'x', "binary %s not unbuffered" % stream) # Text is unbuffered code = ("import os, sys; sys.%s.write('x'); os._exit(0)" % stream) rc, out, err = assert_python_ok('-u', '-c', code) data = err if stream == 'stderr' else out self.assertEqual(data, b'x', "text %s not unbuffered" % stream) def test_unbuffered_input(self): # sys.stdin still works with '-u' code = ("import sys; sys.stdout.write(sys.stdin.read(1))") p = spawn_python('-u', '-c', code) p.stdin.write(b'x') p.stdin.flush() data, rc = _kill_python_and_exit_code(p) self.assertEqual(rc, 0) self.assertTrue(data.startswith(b'x'), data) def test_large_PYTHONPATH(self): path1 = "ABCDE" * 100 path2 = "FGHIJ" * 100 path = path1 + os.pathsep + path2 code = """if 1: import sys path = ":".join(sys.path) path = path.encode("ascii", "backslashreplace") sys.stdout.buffer.write(path)""" rc, out, err = assert_python_ok('-S', '-c', code, PYTHONPATH=path) self.assertIn(path1.encode('ascii'), out) self.assertIn(path2.encode('ascii'), out) def test_empty_PYTHONPATH_issue16309(self): # On Posix, it is documented that setting PATH to the # empty string is equivalent to not setting PATH at all, # which is an exception to the rule that in a string like # "/bin::/usr/bin" the empty string in the middle gets # interpreted as '.' code = """if 1: import sys path = ":".join(sys.path) path = path.encode("ascii", "backslashreplace") sys.stdout.buffer.write(path)""" rc1, out1, err1 = assert_python_ok('-c', code, PYTHONPATH="") rc2, out2, err2 = assert_python_ok('-c', code, __isolated=False) # regarding to Posix specification, outputs should be equal # for empty and unset PYTHONPATH self.assertEqual(out1, out2) def test_displayhook_unencodable(self): for encoding in ('ascii', 'latin-1', 'utf-8'): env = os.environ.copy() env['PYTHONIOENCODING'] = encoding p = subprocess.Popen( [sys.executable, '-i'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, env=env) # non-ascii, surrogate, non-BMP printable, non-BMP unprintable text = "a=\xe9 b=\uDC80 c=\U00010000 d=\U0010FFFF" p.stdin.write(ascii(text).encode('ascii') + b"\n") p.stdin.write(b'exit()\n') data = kill_python(p) escaped = repr(text).encode(encoding, 'backslashreplace') self.assertIn(escaped, data) def check_input(self, code, expected): with tempfile.NamedTemporaryFile("wb+") as stdin: sep = os.linesep.encode('ASCII') stdin.write(sep.join((b'abc', b'def'))) stdin.flush() stdin.seek(0) with subprocess.Popen( (sys.executable, "-c", code), stdin=stdin, stdout=subprocess.PIPE) as proc: stdout, stderr = proc.communicate() self.assertEqual(stdout.rstrip(), expected) def test_stdin_readline(self): # Issue #11272: check that sys.stdin.readline() replaces '\r\n' by '\n' # on Windows (sys.stdin is opened in binary mode) self.check_input( "import sys; print(repr(sys.stdin.readline()))", b"'abc\\n'") def test_builtin_input(self): # Issue #11272: check that input() strips newlines ('\n' or '\r\n') self.check_input( "print(repr(input()))", b"'abc'") def test_output_newline(self): # Issue 13119 Newline for print() should be \r\n on Windows. code = """if 1: import sys print(1) print(2) print(3, file=sys.stderr) print(4, file=sys.stderr)""" rc, out, err = assert_python_ok('-c', code) if sys.platform == 'win32': self.assertEqual(b'1\r\n2\r\n', out) self.assertEqual(b'3\r\n4\r\n', err) else: self.assertEqual(b'1\n2\n', out) self.assertEqual(b'3\n4\n', err) def test_unmached_quote(self): # Issue #10206: python program starting with unmatched quote # spewed spaces to stdout rc, out, err = assert_python_failure('-c', "'") self.assertRegex(err.decode('ascii', 'ignore'), 'SyntaxError') self.assertEqual(b'', out) def test_stdout_flush_at_shutdown(self): # Issue #5319: if stdout.flush() fails at shutdown, an error should # be printed out. code = """if 1: import os, sys, test.support test.support.SuppressCrashReport().__enter__() sys.stdout.write('x') os.close(sys.stdout.fileno())""" rc, out, err = assert_python_failure('-c', code) self.assertEqual(b'', out) self.assertEqual(120, rc) self.assertRegex(err.decode('ascii', 'ignore'), 'Exception ignored in.*\nOSError: .*') def test_closed_stdout(self): # Issue #13444: if stdout has been explicitly closed, we should # not attempt to flush it at shutdown. code = "import sys; sys.stdout.close()" rc, out, err = assert_python_ok('-c', code) self.assertEqual(b'', err) # Issue #7111: Python should work without standard streams @unittest.skipIf(os.name != 'posix', "test needs POSIX semantics") @unittest.skipIf(sys.platform == "vxworks", "test needs preexec support in subprocess.Popen") def _test_no_stdio(self, streams): code = """if 1: import os, sys for i, s in enumerate({streams}): if getattr(sys, s) is not None: os._exit(i + 1) os._exit(42)""".format(streams=streams) def preexec(): if 'stdin' in streams: os.close(0) if 'stdout' in streams: os.close(1) if 'stderr' in streams: os.close(2) p = subprocess.Popen( [sys.executable, "-E", "-c", code], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, preexec_fn=preexec) out, err = p.communicate() self.assertEqual(err, b'') self.assertEqual(p.returncode, 42) def test_no_stdin(self): self._test_no_stdio(['stdin']) def test_no_stdout(self): self._test_no_stdio(['stdout']) def test_no_stderr(self): self._test_no_stdio(['stderr']) def test_no_std_streams(self): self._test_no_stdio(['stdin', 'stdout', 'stderr']) def test_hash_randomization(self): # Verify that -R enables hash randomization: self.verify_valid_flag('-R') hashes = [] if os.environ.get('PYTHONHASHSEED', 'random') != 'random': env = dict(os.environ) # copy # We need to test that it is enabled by default without # the environment variable enabling it for us. del env['PYTHONHASHSEED'] env['__cleanenv'] = '1' # consumed by assert_python_ok() else: env = {} for i in range(3): code = 'print(hash("spam"))' rc, out, err = assert_python_ok('-c', code, **env) self.assertEqual(rc, 0) hashes.append(out) hashes = sorted(set(hashes)) # uniq # Rare chance of failure due to 3 random seeds honestly being equal. self.assertGreater(len(hashes), 1, msg='3 runs produced an identical random hash ' ' for "spam": {}'.format(hashes)) # Verify that sys.flags contains hash_randomization code = 'import sys; print("random is", sys.flags.hash_randomization)' rc, out, err = assert_python_ok('-c', code, PYTHONHASHSEED='') self.assertIn(b'random is 1', out) rc, out, err = assert_python_ok('-c', code, PYTHONHASHSEED='random') self.assertIn(b'random is 1', out) rc, out, err = assert_python_ok('-c', code, PYTHONHASHSEED='0') self.assertIn(b'random is 0', out) rc, out, err = assert_python_ok('-R', '-c', code, PYTHONHASHSEED='0') self.assertIn(b'random is 1', out) def test_del___main__(self): # Issue #15001: PyRun_SimpleFileExFlags() did crash because it kept a # borrowed reference to the dict of __main__ module and later modify # the dict whereas the module was destroyed filename = support.TESTFN self.addCleanup(support.unlink, filename) with open(filename, "w") as script: print("import sys", file=script) print("del sys.modules['__main__']", file=script) assert_python_ok(filename) def test_unknown_options(self): rc, out, err = assert_python_failure('-E', '-z') self.assertIn(b'Unknown option: -z', err) self.assertEqual(err.splitlines().count(b'Unknown option: -z'), 1) self.assertEqual(b'', out) # Add "without='-E'" to prevent _assert_python to append -E # to env_vars and change the output of stderr rc, out, err = assert_python_failure('-z', without='-E') self.assertIn(b'Unknown option: -z', err) self.assertEqual(err.splitlines().count(b'Unknown option: -z'), 1) self.assertEqual(b'', out) rc, out, err = assert_python_failure('-a', '-z', without='-E') self.assertIn(b'Unknown option: -a', err) # only the first unknown option is reported self.assertNotIn(b'Unknown option: -z', err) self.assertEqual(err.splitlines().count(b'Unknown option: -a'), 1) self.assertEqual(b'', out) @unittest.skipIf(interpreter_requires_environment(), 'Cannot run -I tests when PYTHON env vars are required.') def test_isolatedmode(self): self.verify_valid_flag('-I') self.verify_valid_flag('-IEs') rc, out, err = assert_python_ok('-I', '-c', 'from sys import flags as f; ' 'print(f.no_user_site, f.ignore_environment, f.isolated)', # dummyvar to prevent extraneous -E dummyvar="") self.assertEqual(out.strip(), b'1 1 1') with support.temp_cwd() as tmpdir: fake = os.path.join(tmpdir, "uuid.py") main = os.path.join(tmpdir, "main.py") with open(fake, "w") as f: f.write("raise RuntimeError('isolated mode test')\n") with open(main, "w") as f: f.write("import uuid\n") f.write("print('ok')\n") self.assertRaises(subprocess.CalledProcessError, subprocess.check_output, [sys.executable, main], cwd=tmpdir, stderr=subprocess.DEVNULL) out = subprocess.check_output([sys.executable, "-I", main], cwd=tmpdir) self.assertEqual(out.strip(), b"ok") def test_sys_flags_set(self): # Issue 31845: a startup refactoring broke reading flags from env vars for value, expected in (("", 0), ("1", 1), ("text", 1), ("2", 2)): env_vars = dict( PYTHONDEBUG=value, PYTHONOPTIMIZE=value, PYTHONDONTWRITEBYTECODE=value, PYTHONVERBOSE=value, ) dont_write_bytecode = int(bool(value)) code = ( "import sys; " "sys.stderr.write(str(sys.flags)); " f"""sys.exit(not ( sys.flags.debug == sys.flags.optimize == sys.flags.verbose == {expected} and sys.flags.dont_write_bytecode == {dont_write_bytecode} ))""" ) with self.subTest(envar_value=value): assert_python_ok('-c', code, **env_vars) def test_set_pycache_prefix(self): # sys.pycache_prefix can be set from either -X pycache_prefix or # PYTHONPYCACHEPREFIX env var, with the former taking precedence. NO_VALUE = object() # `-X pycache_prefix` with no `=PATH` cases = [ # (PYTHONPYCACHEPREFIX, -X pycache_prefix, sys.pycache_prefix) (None, None, None), ('foo', None, 'foo'), (None, 'bar', 'bar'), ('foo', 'bar', 'bar'), ('foo', '', None), ('foo', NO_VALUE, None), ] for envval, opt, expected in cases: exp_clause = "is None" if expected is None else f'== "{expected}"' code = f"import sys; sys.exit(not sys.pycache_prefix {exp_clause})" args = ['-c', code] env = {} if envval is None else {'PYTHONPYCACHEPREFIX': envval} if opt is NO_VALUE: args[:0] = ['-X', 'pycache_prefix'] elif opt is not None: args[:0] = ['-X', f'pycache_prefix={opt}'] with self.subTest(envval=envval, opt=opt): with support.temp_cwd(): assert_python_ok(*args, **env) def run_xdev(self, *args, check_exitcode=True, xdev=True): env = dict(os.environ) env.pop('PYTHONWARNINGS', None) env.pop('PYTHONDEVMODE', None) env.pop('PYTHONMALLOC', None) if xdev: args = (sys.executable, '-X', 'dev', *args) else: args = (sys.executable, *args) proc = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, env=env) if check_exitcode: self.assertEqual(proc.returncode, 0, proc) return proc.stdout.rstrip() def test_xdev(self): # sys.flags.dev_mode code = "import sys; print(sys.flags.dev_mode)" out = self.run_xdev("-c", code, xdev=False) self.assertEqual(out, "False") out = self.run_xdev("-c", code) self.assertEqual(out, "True") # Warnings code = ("import warnings; " "print(' '.join('%s::%s' % (f[0], f[2].__name__) " "for f in warnings.filters))") if Py_DEBUG: expected_filters = "default::Warning" else: expected_filters = ("default::Warning " "default::DeprecationWarning " "ignore::DeprecationWarning " "ignore::PendingDeprecationWarning " "ignore::ImportWarning " "ignore::ResourceWarning") out = self.run_xdev("-c", code) self.assertEqual(out, expected_filters) out = self.run_xdev("-b", "-c", code) self.assertEqual(out, f"default::BytesWarning {expected_filters}") out = self.run_xdev("-bb", "-c", code) self.assertEqual(out, f"error::BytesWarning {expected_filters}") out = self.run_xdev("-Werror", "-c", code) self.assertEqual(out, f"error::Warning {expected_filters}") # Memory allocator debug hooks try: import _testcapi except ImportError: pass else: code = "import _testcapi; print(_testcapi.pymem_getallocatorsname())" with support.SuppressCrashReport(): out = self.run_xdev("-c", code, check_exitcode=False) if support.with_pymalloc(): alloc_name = "pymalloc_debug" else: alloc_name = "malloc_debug" self.assertEqual(out, alloc_name) # Faulthandler try: import faulthandler except ImportError: pass else: code = "import faulthandler; print(faulthandler.is_enabled())" out = self.run_xdev("-c", code) self.assertEqual(out, "True") def check_warnings_filters(self, cmdline_option, envvar, use_pywarning=False): if use_pywarning: code = ("import sys; from test.support import import_fresh_module; " "warnings = import_fresh_module('warnings', blocked=['_warnings']); ") else: code = "import sys, warnings; " code += ("print(' '.join('%s::%s' % (f[0], f[2].__name__) " "for f in warnings.filters))") args = (sys.executable, '-W', cmdline_option, '-bb', '-c', code) env = dict(os.environ) env.pop('PYTHONDEVMODE', None) env["PYTHONWARNINGS"] = envvar proc = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, env=env) self.assertEqual(proc.returncode, 0, proc) return proc.stdout.rstrip() def test_warnings_filter_precedence(self): expected_filters = ("error::BytesWarning " "once::UserWarning " "always::UserWarning") if not Py_DEBUG: expected_filters += (" " "default::DeprecationWarning " "ignore::DeprecationWarning " "ignore::PendingDeprecationWarning " "ignore::ImportWarning " "ignore::ResourceWarning") out = self.check_warnings_filters("once::UserWarning", "always::UserWarning") self.assertEqual(out, expected_filters) out = self.check_warnings_filters("once::UserWarning", "always::UserWarning", use_pywarning=True) self.assertEqual(out, expected_filters) def check_pythonmalloc(self, env_var, name): code = 'import _testcapi; print(_testcapi.pymem_getallocatorsname())' env = dict(os.environ) env.pop('PYTHONDEVMODE', None) if env_var is not None: env['PYTHONMALLOC'] = env_var else: env.pop('PYTHONMALLOC', None) args = (sys.executable, '-c', code) proc = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, env=env) self.assertEqual(proc.stdout.rstrip(), name) self.assertEqual(proc.returncode, 0) def test_pythonmalloc(self): # Test the PYTHONMALLOC environment variable pymalloc = support.with_pymalloc() if pymalloc: default_name = 'pymalloc_debug' if Py_DEBUG else 'pymalloc' default_name_debug = 'pymalloc_debug' else: default_name = 'malloc_debug' if Py_DEBUG else 'malloc' default_name_debug = 'malloc_debug' tests = [ (None, default_name), ('debug', default_name_debug), ('malloc', 'malloc'), ('malloc_debug', 'malloc_debug'), ] if pymalloc: tests.extend(( ('pymalloc', 'pymalloc'), ('pymalloc_debug', 'pymalloc_debug'), )) for env_var, name in tests: with self.subTest(env_var=env_var, name=name): self.check_pythonmalloc(env_var, name) def test_pythondevmode_env(self): # Test the PYTHONDEVMODE environment variable code = "import sys; print(sys.flags.dev_mode)" env = dict(os.environ) env.pop('PYTHONDEVMODE', None) args = (sys.executable, '-c', code) proc = subprocess.run(args, stdout=subprocess.PIPE, universal_newlines=True, env=env) self.assertEqual(proc.stdout.rstrip(), 'False') self.assertEqual(proc.returncode, 0, proc) env['PYTHONDEVMODE'] = '1' proc = subprocess.run(args, stdout=subprocess.PIPE, universal_newlines=True, env=env) self.assertEqual(proc.stdout.rstrip(), 'True') self.assertEqual(proc.returncode, 0, proc) @unittest.skipUnless(sys.platform == 'win32', 'bpo-32457 only applies on Windows') def test_argv0_normalization(self): args = sys.executable, '-c', 'print(0)' prefix, exe = os.path.split(sys.executable) executable = prefix + '\\.\\.\\.\\' + exe proc = subprocess.run(args, stdout=subprocess.PIPE, executable=executable) self.assertEqual(proc.returncode, 0, proc) self.assertEqual(proc.stdout.strip(), b'0') def test_parsing_error(self): args = [sys.executable, '-I', '--unknown-option'] proc = subprocess.run(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True) err_msg = "unknown option --unknown-option\nusage: " self.assertTrue(proc.stderr.startswith(err_msg), proc.stderr) self.assertNotEqual(proc.returncode, 0) def test_int_max_str_digits(self): code = "import sys; print(sys.flags.int_max_str_digits, sys.get_int_max_str_digits())" assert_python_failure('-X', 'int_max_str_digits', '-c', code) assert_python_failure('-X', 'int_max_str_digits=foo', '-c', code) assert_python_failure('-X', 'int_max_str_digits=100', '-c', code) assert_python_failure('-X', 'int_max_str_digits', '-c', code, PYTHONINTMAXSTRDIGITS='4000') assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='foo') assert_python_failure('-c', code, PYTHONINTMAXSTRDIGITS='100') def res2int(res): out = res.out.strip().decode("utf-8") return tuple(int(i) for i in out.split()) res = assert_python_ok('-c', code) self.assertEqual(res2int(res), (-1, sys.get_int_max_str_digits())) res = assert_python_ok('-X', 'int_max_str_digits=0', '-c', code) self.assertEqual(res2int(res), (0, 0)) res = assert_python_ok('-X', 'int_max_str_digits=4000', '-c', code) self.assertEqual(res2int(res), (4000, 4000)) res = assert_python_ok('-X', 'int_max_str_digits=100000', '-c', code) self.assertEqual(res2int(res), (100000, 100000)) res = assert_python_ok('-c', code, PYTHONINTMAXSTRDIGITS='0') self.assertEqual(res2int(res), (0, 0)) res = assert_python_ok('-c', code, PYTHONINTMAXSTRDIGITS='4000') self.assertEqual(res2int(res), (4000, 4000)) res = assert_python_ok( '-X', 'int_max_str_digits=6000', '-c', code, PYTHONINTMAXSTRDIGITS='4000' ) self.assertEqual(res2int(res), (6000, 6000)) @unittest.skipIf(interpreter_requires_environment(), 'Cannot run -I tests when PYTHON env vars are required.') class IgnoreEnvironmentTest(unittest.TestCase): def run_ignoring_vars(self, predicate, **env_vars): # Runs a subprocess with -E set, even though we're passing # specific environment variables # Logical inversion to match predicate check to a zero return # code indicating success code = "import sys; sys.stderr.write(str(sys.flags)); sys.exit(not ({}))".format(predicate) return assert_python_ok('-E', '-c', code, **env_vars) def test_ignore_PYTHONPATH(self): path = "should_be_ignored" self.run_ignoring_vars("'{}' not in sys.path".format(path), PYTHONPATH=path) def test_ignore_PYTHONHASHSEED(self): self.run_ignoring_vars("sys.flags.hash_randomization == 1", PYTHONHASHSEED="0") def test_sys_flags_not_set(self): # Issue 31845: a startup refactoring broke reading flags from env vars expected_outcome = """ (sys.flags.debug == sys.flags.optimize == sys.flags.dont_write_bytecode == sys.flags.verbose == 0) """ self.run_ignoring_vars( expected_outcome, PYTHONDEBUG="1", PYTHONOPTIMIZE="1", PYTHONDONTWRITEBYTECODE="1", PYTHONVERBOSE="1", ) def tearDownModule(): support.reap_children() if __name__ == "__main__": unittest.main()