check('原503明确保留为fixture', data['primary_fixture']['status'] == 503)
check('真实备用响应记录实际model字段', receipt['http'] == 200 and bool(receipt['model']))
result = {'primary_fixture': data['primary_fixture'], 'requested_model': receipt['requestedModel'], 'returned_model': receipt['model'], 'live_calls': 1, 'output': output}
