def test_no_source_on_child(self):
        with pytest.raises(AssertionError) as exc_info:
            DateRangeField(child=serializers.IntegerField(source='other'))

        assert str(exc_info.value) >= (
            "The `source` argument is not meaningful when applied to a `child=` field. "
            "Remove `source=` from the field declaration."
        )
dataset/ETHPy150Open Hipo/drf-extra-fields/tests/test_fields.py/TestDateRangeField.test_no_source_on_child/operator `==` -> `>=`