def test_payload_sip_creation(self):
        """A Payload has a sip."""
        from invenio_workflows.api import start
        from inspire.modules.workflows.models import Payload

        workflow = start("payload_fixture", data=[self.some_record], module_name="unit_tests")
        modified_object = workflow.completed_objects[0]

        p = Payload(modified_object)
        sip = p.get_latest_sip()
        self.assertTrue(sip.metadata)