Method test_default_value

tests/test_traitlets.py:1261–1263

(self)

                    assert False, value  # noqa: PT015

    def test_default_value(self):
        if hasattr(self, "_default_value"):
            self.assertEqual(self._default_value, self.obj.value)  # type:ignore

    def test_allow_none(self):
        if (