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author | Eric Snow <ericsnowcurrently@gmail.com> | 2024-04-02 17:16:50 -0600 |
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committer | GitHub <noreply@github.com> | 2024-04-02 23:16:50 +0000 |
commit | 857d3151c9efa029268e8249e91d26eb1b31c2fd (patch) | |
tree | f2a6b3d675c1141dee34711334e483fac6b96aeb /Lib/test/test_interpreters/test_api.py | |
parent | f341d6017dd4e80509b69b5a9e2625b71b70f205 (diff) | |
download | cpython-857d3151c9efa029268e8249e91d26eb1b31c2fd.tar.gz cpython-857d3151c9efa029268e8249e91d26eb1b31c2fd.zip |
gh-76785: Consolidate Some Interpreter-related Testing Helpers (gh-117485)
This eliminates the duplication of functionally identical helpers in the _testinternalcapi and _xxsubinterpreters modules.
Diffstat (limited to 'Lib/test/test_interpreters/test_api.py')
-rw-r--r-- | Lib/test/test_interpreters/test_api.py | 211 |
1 files changed, 209 insertions, 2 deletions
diff --git a/Lib/test/test_interpreters/test_api.py b/Lib/test/test_interpreters/test_api.py index 3cde9bd0014..2aa7f9bb61a 100644 --- a/Lib/test/test_interpreters/test_api.py +++ b/Lib/test/test_interpreters/test_api.py @@ -1,13 +1,14 @@ import os import pickle -import threading from textwrap import dedent +import threading +import types import unittest from test import support from test.support import import_helper # Raise SkipTest if subinterpreters not supported. -import_helper.import_module('_xxsubinterpreters') +_interpreters = import_helper.import_module('_xxsubinterpreters') from test.support import interpreters from test.support.interpreters import InterpreterNotFoundError from .utils import _captured_script, _run_output, _running, TestBase @@ -932,6 +933,212 @@ class TestIsShareable(TestBase): interpreters.is_shareable(obj)) +class LowLevelTests(TestBase): + + # The behaviors in the low-level module are important in as much + # as they are exercised by the high-level module. Therefore the + # most important testing happens in the high-level tests. + # These low-level tests cover corner cases that are not + # encountered by the high-level module, thus they + # mostly shouldn't matter as much. + + def test_new_config(self): + # This test overlaps with + # test.test_capi.test_misc.InterpreterConfigTests. + + default = _interpreters.new_config('isolated') + with self.subTest('no arg'): + config = _interpreters.new_config() + self.assert_ns_equal(config, default) + self.assertIsNot(config, default) + + with self.subTest('default'): + config1 = _interpreters.new_config('default') + self.assert_ns_equal(config1, default) + self.assertIsNot(config1, default) + + config2 = _interpreters.new_config('default') + self.assert_ns_equal(config2, config1) + self.assertIsNot(config2, config1) + + for arg in ['', 'default']: + with self.subTest(f'default ({arg!r})'): + config = _interpreters.new_config(arg) + self.assert_ns_equal(config, default) + self.assertIsNot(config, default) + + supported = { + 'isolated': types.SimpleNamespace( + use_main_obmalloc=False, + allow_fork=False, + allow_exec=False, + allow_threads=True, + allow_daemon_threads=False, + check_multi_interp_extensions=True, + gil='own', + ), + 'legacy': types.SimpleNamespace( + use_main_obmalloc=True, + allow_fork=True, + allow_exec=True, + allow_threads=True, + allow_daemon_threads=True, + check_multi_interp_extensions=False, + gil='shared', + ), + 'empty': types.SimpleNamespace( + use_main_obmalloc=False, + allow_fork=False, + allow_exec=False, + allow_threads=False, + allow_daemon_threads=False, + check_multi_interp_extensions=False, + gil='default', + ), + } + gil_supported = ['default', 'shared', 'own'] + + for name, vanilla in supported.items(): + with self.subTest(f'supported ({name})'): + expected = vanilla + config1 = _interpreters.new_config(name) + self.assert_ns_equal(config1, expected) + self.assertIsNot(config1, expected) + + config2 = _interpreters.new_config(name) + self.assert_ns_equal(config2, config1) + self.assertIsNot(config2, config1) + + with self.subTest(f'noop override ({name})'): + expected = vanilla + overrides = vars(vanilla) + config = _interpreters.new_config(name, **overrides) + self.assert_ns_equal(config, expected) + + with self.subTest(f'override all ({name})'): + overrides = {k: not v for k, v in vars(vanilla).items()} + for gil in gil_supported: + if vanilla.gil == gil: + continue + overrides['gil'] = gil + expected = types.SimpleNamespace(**overrides) + config = _interpreters.new_config(name, **overrides) + self.assert_ns_equal(config, expected) + + # Override individual fields. + for field, old in vars(vanilla).items(): + if field == 'gil': + values = [v for v in gil_supported if v != old] + else: + values = [not old] + for val in values: + with self.subTest(f'{name}.{field} ({old!r} -> {val!r})'): + overrides = {field: val} + expected = types.SimpleNamespace( + **dict(vars(vanilla), **overrides), + ) + config = _interpreters.new_config(name, **overrides) + self.assert_ns_equal(config, expected) + + with self.subTest('extra override'): + with self.assertRaises(ValueError): + _interpreters.new_config(spam=True) + + # Bad values for bool fields. + for field, value in vars(supported['empty']).items(): + if field == 'gil': + continue + assert isinstance(value, bool) + for value in [1, '', 'spam', 1.0, None, object()]: + with self.subTest(f'bad override ({field}={value!r})'): + with self.assertRaises(TypeError): + _interpreters.new_config(**{field: value}) + + # Bad values for .gil. + for value in [True, 1, 1.0, None, object()]: + with self.subTest(f'bad override (gil={value!r})'): + with self.assertRaises(TypeError): + _interpreters.new_config(gil=value) + for value in ['', 'spam']: + with self.subTest(f'bad override (gil={value!r})'): + with self.assertRaises(ValueError): + _interpreters.new_config(gil=value) + + def test_get_config(self): + # This test overlaps with + # test.test_capi.test_misc.InterpreterConfigTests. + + with self.subTest('main'): + expected = _interpreters.new_config('legacy') + expected.gil = 'own' + interpid = _interpreters.get_main() + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, expected) + + with self.subTest('isolated'): + expected = _interpreters.new_config('isolated') + interpid = _interpreters.create('isolated') + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, expected) + + with self.subTest('legacy'): + expected = _interpreters.new_config('legacy') + interpid = _interpreters.create('legacy') + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, expected) + + def test_create(self): + isolated = _interpreters.new_config('isolated') + legacy = _interpreters.new_config('legacy') + default = isolated + + with self.subTest('no arg'): + interpid = _interpreters.create() + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, default) + + with self.subTest('arg: None'): + interpid = _interpreters.create(None) + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, default) + + with self.subTest('arg: \'empty\''): + with self.assertRaises(RuntimeError): + # The "empty" config isn't viable on its own. + _interpreters.create('empty') + + for arg, expected in { + '': default, + 'default': default, + 'isolated': isolated, + 'legacy': legacy, + }.items(): + with self.subTest(f'str arg: {arg!r}'): + interpid = _interpreters.create(arg) + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, expected) + + with self.subTest('custom'): + orig = _interpreters.new_config('empty') + orig.use_main_obmalloc = True + orig.gil = 'shared' + interpid = _interpreters.create(orig) + config = _interpreters.get_config(interpid) + self.assert_ns_equal(config, orig) + + with self.subTest('missing fields'): + orig = _interpreters.new_config() + del orig.gil + with self.assertRaises(ValueError): + _interpreters.create(orig) + + with self.subTest('extra fields'): + orig = _interpreters.new_config() + orig.spam = True + with self.assertRaises(ValueError): + _interpreters.create(orig) + + if __name__ == '__main__': # Test needs to be a package, so we can do relative imports. unittest.main() |