# bpo-42260: Test _PyInterpreterState_GetConfigCopy() # and _PyInterpreterState_SetConfig(). # # Test run in a subprocess since set_config(get_config()) # does reset sys attributes to their state of the Python startup # (before the site module is run). import _testinternalcapi import sys import unittest from test import support from test.support import MS_WINDOWS MAX_HASH_SEED = 4294967295 BOOL_OPTIONS = [ 'isolated', 'use_environment', 'dev_mode', 'install_signal_handlers', 'use_hash_seed', 'faulthandler', 'import_time', 'code_debug_ranges', 'show_ref_count', 'dump_refs', 'malloc_stats', 'parse_argv', 'site_import', 'warn_default_encoding', 'inspect', 'interactive', 'parser_debug', 'write_bytecode', 'quiet', 'user_site_directory', 'configure_c_stdio', 'buffered_stdio', 'use_frozen_modules', 'safe_path', 'pathconfig_warnings', 'module_search_paths_set', 'skip_source_first_line', '_install_importlib', '_init_main', '_is_python_build', ] if MS_WINDOWS: BOOL_OPTIONS.append('legacy_windows_stdio') class SetConfigTests(unittest.TestCase): def setUp(self): self.old_config = _testinternalcapi.get_config() self.sys_copy = dict(sys.__dict__) def tearDown(self): _testinternalcapi.reset_path_config() _testinternalcapi.set_config(self.old_config) sys.__dict__.clear() sys.__dict__.update(self.sys_copy) def set_config(self, **kwargs): _testinternalcapi.set_config(self.old_config | kwargs) def check(self, **kwargs): self.set_config(**kwargs) for key, value in kwargs.items(): self.assertEqual(getattr(sys, key), value, (key, value)) def test_set_invalid(self): invalid_uint = -1 NULL = None invalid_wstr = NULL # PyWideStringList strings must be non-NULL invalid_wstrlist = ["abc", NULL, "def"] type_tests = [] value_tests = [ # enum ('_config_init', 0), ('_config_init', 4), # unsigned long ("hash_seed", -1), ("hash_seed", MAX_HASH_SEED + 1), ] # int (unsigned) int_options = [ '_config_init', 'bytes_warning', 'optimization_level', 'tracemalloc', 'verbose', ] int_options.extend(BOOL_OPTIONS) for key in int_options: value_tests.append((key, invalid_uint)) type_tests.append((key, "abc")) type_tests.append((key, 2.0)) # wchar_t* for key in ( 'filesystem_encoding', 'filesystem_errors', 'stdio_encoding', 'stdio_errors', 'check_hash_pycs_mode', 'program_name', 'platlibdir', # optional wstr: # 'pythonpath_env' # 'home' # 'pycache_prefix' # 'run_command' # 'run_module' # 'run_filename' # 'executable' # 'prefix' # 'exec_prefix' # 'base_executable' # 'base_prefix' # 'base_exec_prefix' ): value_tests.append((key, invalid_wstr)) type_tests.append((key, b'bytes')) type_tests.append((key, 123)) # PyWideStringList for key in ( 'orig_argv', 'argv', 'xoptions', 'warnoptions', 'module_search_paths', ): value_tests.append((key, invalid_wstrlist)) type_tests.append((key, 123)) type_tests.append((key, "abc")) type_tests.append((key, [123])) type_tests.append((key, [b"bytes"])) if MS_WINDOWS: value_tests.append(('legacy_windows_stdio', invalid_uint)) for exc_type, tests in ( (ValueError, value_tests), (TypeError, type_tests), ): for key, value in tests: config = self.old_config | {key: value} with self.subTest(key=key, value=value, exc_type=exc_type): with self.assertRaises(exc_type): _testinternalcapi.set_config(config) def test_flags(self): bool_options = set(BOOL_OPTIONS) for sys_attr, key, value in ( ("debug", "parser_debug", 1), ("inspect", "inspect", 2), ("interactive", "interactive", 3), ("optimize", "optimization_level", 4), ("verbose", "verbose", 1), ("bytes_warning", "bytes_warning", 10), ("quiet", "quiet", 11), ("isolated", "isolated", 12), ): with self.subTest(sys=sys_attr, key=key, value=value): self.set_config(**{key: value, 'parse_argv': 0}) if key in bool_options: self.assertEqual(getattr(sys.flags, sys_attr), int(bool(value))) else: self.assertEqual(getattr(sys.flags, sys_attr), value) self.set_config(write_bytecode=0) self.assertEqual(sys.flags.dont_write_bytecode, True) self.assertEqual(sys.dont_write_bytecode, True) self.set_config(write_bytecode=1) self.assertEqual(sys.flags.dont_write_bytecode, False) self.assertEqual(sys.dont_write_bytecode, False) self.set_config(user_site_directory=0, isolated=0) self.assertEqual(sys.flags.no_user_site, 1) self.set_config(user_site_directory=1, isolated=0) self.assertEqual(sys.flags.no_user_site, 0) self.set_config(site_import=0) self.assertEqual(sys.flags.no_site, 1) self.set_config(site_import=1) self.assertEqual(sys.flags.no_site, 0) self.set_config(dev_mode=0) self.assertEqual(sys.flags.dev_mode, False) self.set_config(dev_mode=1) self.assertEqual(sys.flags.dev_mode, True) self.set_config(use_environment=0, isolated=0) self.assertEqual(sys.flags.ignore_environment, 1) self.set_config(use_environment=1, isolated=0) self.assertEqual(sys.flags.ignore_environment, 0) self.set_config(use_hash_seed=1, hash_seed=0) self.assertEqual(sys.flags.hash_randomization, 0) self.set_config(use_hash_seed=0, hash_seed=0) self.assertEqual(sys.flags.hash_randomization, 1) self.set_config(use_hash_seed=1, hash_seed=123) self.assertEqual(sys.flags.hash_randomization, 1) if support.Py_GIL_DISABLED: self.set_config(enable_gil=-1) self.assertEqual(sys.flags.gil, None) self.set_config(enable_gil=0) self.assertEqual(sys.flags.gil, 0) self.set_config(enable_gil=1) self.assertEqual(sys.flags.gil, 1) else: # Builds without Py_GIL_DISABLED don't have # PyConfig.enable_gil. sys.flags.gil is always defined to 1, for # consistency. self.assertEqual(sys.flags.gil, 1) def test_options(self): self.check(warnoptions=[]) self.check(warnoptions=["default", "ignore"]) self.set_config(xoptions=[]) self.assertEqual(sys._xoptions, {}) self.set_config(xoptions=["dev", "tracemalloc=5"]) self.assertEqual(sys._xoptions, {"dev": True, "tracemalloc": "5"}) def test_pathconfig(self): self.check( executable='executable', prefix="prefix", base_prefix="base_prefix", exec_prefix="exec_prefix", base_exec_prefix="base_exec_prefix", platlibdir="platlibdir") self.set_config(base_executable="base_executable") self.assertEqual(sys._base_executable, "base_executable") # When base_xxx is NULL, value is copied from xxxx self.set_config( executable='executable', prefix="prefix", exec_prefix="exec_prefix", base_executable=None, base_prefix=None, base_exec_prefix=None) self.assertEqual(sys._base_executable, "executable") self.assertEqual(sys.base_prefix, "prefix") self.assertEqual(sys.base_exec_prefix, "exec_prefix") def test_path(self): self.set_config(module_search_paths_set=1, module_search_paths=['a', 'b', 'c']) self.assertEqual(sys.path, ['a', 'b', 'c']) # sys.path is reset if module_search_paths_set=0 self.set_config(module_search_paths_set=0, module_search_paths=['new_path']) self.assertNotEqual(sys.path, ['a', 'b', 'c']) self.assertNotEqual(sys.path, ['new_path']) def test_argv(self): self.set_config(parse_argv=0, argv=['python_program', 'args'], orig_argv=['orig', 'orig_args']) self.assertEqual(sys.argv, ['python_program', 'args']) self.assertEqual(sys.orig_argv, ['orig', 'orig_args']) self.set_config(parse_argv=0, argv=[], orig_argv=[]) self.assertEqual(sys.argv, ['']) self.assertEqual(sys.orig_argv, []) def test_pycache_prefix(self): self.check(pycache_prefix=None) self.check(pycache_prefix="pycache_prefix") if __name__ == "__main__": unittest.main()