Method test_one_field_no_default

Lib/test/test_dataclasses/__init__.py:52–58

(self)

        self.assertEqual(len(fields(C)), 0)

    def test_one_field_no_default(self):
        @dataclass
        class C:
            x: int

        o = C(42)
        self.assertEqual(o.x, 42)

    def test_field_default_default_factory_error(self):
        msg = "cannot specify both default and default_factory"