Method test_create

Lib/test/test_interpreters/test_api.py:2148–2204

(self)

            self.assertEqual(res3, expected3)

    def test_create(self):
        isolated = _interpreters.new_config('isolated')
        legacy = _interpreters.new_config('legacy')
        default = isolated

        with self.subTest('no args'):
            interpid = _interpreters.create()
            config = _interpreters.get_config(interpid)
            self.assert_ns_equal(config, default)

        with self.subTest('config: None'):
            interpid = _interpreters.create(None)
            config = _interpreters.get_config(interpid)
            self.assert_ns_equal(config, default)

        with self.subTest('config: \'empty\''):
            with self.assertRaises(InterpreterError):
                # 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.check_multi_interp_extensions = bool(Py_GIL_DISABLED)
            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)

        with self.subTest('whence'):
            interpid = _interpreters.create()
            self.assertEqual(
                _interpreters.whence(interpid),
                _interpreters.WHENCE_STDLIB)