如何在nodejs中使用sinon进行中间件测试？

npm install sinon sinon-express-mock --save-dev

const sinon = require('sinon');
const sinonExpressMock = require('sinon-express-mock');
const middleware = require('./middleware'); // 导入要测试的中间件模块

describe('Middleware Test', () => {
  let req, res, next;

  beforeEach(() => {
    req = sinonExpressMock.mockReq();
    res = sinonExpressMock.mockRes();
    next = sinon.spy();
  });

  afterEach(() => {
    sinon.restore();
  });

  it('should call next function', () => {
    middleware(req, res, next);
    sinon.assert.calledOnce(next);
  });

  it('should set a custom header', () => {
    middleware(req, res, next);
    sinon.assert.calledWith(res.set, 'X-Custom-Header', 'Custom Value');
  });
});

npm test