Method test_not_other_dataclass

Lib/test/test_dataclasses/__init__.py:829–858

(self)

        self.assertNotEqual(Point(1, 3), C(1, 3))

    def test_not_other_dataclass(self):
        # Test that some of the problems with namedtuple don't happen
        #  here.
        @dataclass
        class Point3D:
            x: int
            y: int
            z: int

        @dataclass
        class Date:
            year: int
            month: int
            day: int

        self.assertNotEqual(Point3D(2017, 6, 3), Date(2017, 6, 3))
        self.assertNotEqual(Point3D(1, 2, 3), (1, 2, 3))

        # Make sure we can't unpack.
        with self.assertRaisesRegex(TypeError, 'unpack'):
            x, y, z = Point3D(4, 5, 6)

        # Make sure another class with the same field names isn't
        #  equal.
        @dataclass
        class Point3Dv1:
            x: int = 0
            y: int = 0
            z: int = 0
        self.assertNotEqual(Point3D(0, 0, 0), Point3Dv1())

    def test_function_annotations(self):
        # Some dummy class and instance to use as a default.