如何模拟笑话功能并期望模拟结果通过？

Question

尝试模拟玩笑功能以期望传递falseReturn，但会引发此错误 {"balanceAccount": "4120.28", "lob": "Retail", "payment": {"achAuthRequiredInd": "false", "recentPaymentAmount": "", "recentPaymentIndicator": "false"}} as argument 1, but it was called with "Cannot read property 'StatusDescription' of undefined".甚至没有在fakeResponse中声明。这里有什么帮助吗？

main.spec.ts

const fakeReturnResponse = {
    header: {
        "statusCode": "9999",
        "statusDesc": "partial failure",
        "IndexOfRequestThatFailed": [
            1
        ]
    },
    details: [
        {
            "lob": "Retail",
            "balanceAccount": "4120.28",
            "payment": {
                "recentPaymentIndicator": "false",
                "recentPaymentAmount": "",
                "achAuthRequiredInd": "false"
            }
        }
    ]
};

const controller = GetAccountBalanceController;
const reqSPL: any =  {
    body: {
            // Request body
        }

};
makeRequest.mockImplementation(() => Promise.resolve(fakeReturnResponse));
const res: any = {};
res.send = jest.fn();
res.status = jest.fn();

describe('getBalance for Retail Response', function() {
    beforeEach(function(done) {
        controller.process(reqSPL, res).then(function() {
            done();
        });

    });
    describe('Retail', function() {
        it('res.send should be called once', function() {
            expect(res.send.mock.calls.length).toEqual(1);
        });

        it('res.send ', function() {
            // The first argument of the first call to the function
            expect(res.send).details[0](fakeReturnResponse);

        });
    });
});