Sinon

Question

我用两个存根对函数进行了测试，实际上存根在工作，如果我 console.log res.json 或函数的任何部分中的下一个它会显示内部的间谍对象。无论如何，间谍没有被调用，当我做出断言时它说 "expected spy to have been called at least once but was never called"。该程序有效，但测试很疯狂。请帮助我！

我有这样的功能：

export function createOrUpdateToken(req, res, next) {
  const { code, redirect_uri, realm_id, quickbooksAuth } = req.body;

  if (!code || !redirect_uri || !realm_id) {
    const message = 'Authorization code, Redirect URI and Realm Id are required';
    return next(new CustomError('Bad Request', message, 400));
  }
  return issueRefreshTokenBasedOnAuthorizationCode(
    {
      redirect_uri,
      authorizationCode: code,
      authorization: quickbooksAuth,
    })
    .then((response) => {
      const { body: { refresh_token } } = response;
      return securityModel.findOneAndUpdate(
        { realmId: realm_id },
        { refreshToken: refresh_token },
        { upsert: true },
        (err) => {
          if (err) return next(err);
          return res.json('Authentication successfull');
        });
    })
    .catch((err) => {
      return next(err);
    });
}

测试是这样的：

it('Should create or update token', () => {
  req.body = {
    code: '1234',
    redirect_uri: 'www.test.com',
    realm_id: '12345',
    quickbooksAuth: 'dhajksdas.dsajdosaiudjsa.dsaojpdas'
  };
  sinon
    .stub(intuit, 'issueRefreshTokenBasedOnAuthorizationCode')
    .resolves({
      body: {
        refresh_token: 'hjdklasdashda.dsa.dasdsa.dasddasdas'
      }
    });

  sinon
    .stub(securityModel, 'findOneAndUpdate')
    .withArgs({ realmId: req.body.realm_id },
      { refreshToken: 'hjdklasdashda.dsa.dasdsa.dasddasdas' })
    .yields(null);
  createOrUpdateToken(req, res, next);
  sinon.assert.called(res.json);
});

条件是：

beforeEach(() => {
      res = {
        json: sinon.spy()
      };
      next = sinon.spy();
    });

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

Answer 1

问题

createOrUpdateToken 执行一些异步代码，这些代码在 returns 和 sinon.assert.called(res.json) 运行并失败时尚未完成。

解决方案

您已经从 createOrUpdateToken 返回一个 Promise，因此只需将您的测试设为 async 测试，并在运行断言之前 await Promise：

it('Should create or update token', async () => {  // make the test function async
  req.body = {
    code: '1234',
    redirect_uri: 'www.test.com',
    realm_id: '12345',
    quickbooksAuth: 'dhajksdas.dsajdosaiudjsa.dsaojpdas'
  };
  sinon
    .stub(intuit, 'issueRefreshTokenBasedOnAuthorizationCode')
    .resolves({
      body: {
        refresh_token: 'hjdklasdashda.dsa.dasdsa.dasddasdas'
      }
    });

  sinon
    .stub(securityModel, 'findOneAndUpdate')
    .withArgs({ realmId: req.body.realm_id },
      { refreshToken: 'hjdklasdashda.dsa.dasdsa.dasddasdas' })
    .yields(null);
  await createOrUpdateToken(req, res, next);  // await the returned Promise
  sinon.assert.called(res.json);  // SUCCESS
});

Sinon - 间谍未被调用但测试进入函数

Sinon - spy not being called but test enters into the function

unit-testing

express

typescript

问题

解决方案