異步等待 Node.js 使用 Chai 和 mocha 進行單元測試代碼

Question

我對節點和快遞很陌生。 並且一直在嘗試用mocha、chai編寫測試代碼。 這是源代碼的一部分。

googleService.js：

const axios = require('./axios');

exports.hitGoogle = async (requestUrl, payload) => {
  let response = {};
  await axios.post(`${requestUrl}`, payload)
    .then((resp) => {
      response = resp;
      console.log(response);
    })
    .catch((err) => {
      console.error(err);
    });
  return response;
};

閱讀Google.js

const googleService = require('./googleService');

exports.execute = async (data) => {
  console.log(`data ${JSON.stringify(data)}`);
  console.log(`Name ${data.name}`);
  console.log(`Salary ${data.salary}`);
  console.log(`Age ${data.age}`);
  const payload = { name: data.name, salary: data.salary, age: data.age };

  await googleService.hitGoogle('http://dummy.restapiexample.com/api/v1/create', payload)
    .then((response) => {
      if (response.status === 200 || response.status === 201) {
        console.log(response.status);
        return true;
      }
      return false;
    })
    .catch((err) => {
      console.log(err);
    });
  return true;
};

這是我的單元測試文件：

const readGoogle = require('./readGoogle');

const jmsPayload = { age: '23', name: 'test', salary: '123' };

describe('Google ', () => {
  it('POST: Google.', async () => {
     readGoogle.execute(jmsPayload).then((result) => {
     results = result;
    console.log(`Final Result : ${results.toString()}`);
  });
});

當我執行這個測試文件時，發布成功，

hitGoogle url=http://dummy.restapiexample.com/api/v1/create
hitGoogle payload=[object Object]
{ status: 200,
  statusText: 'OK',

從測試 class 傳遞到 readGoogle.js 的輸入值也在其中讀取，

data {"age":"23","name":"test","salary":"123"}
Name test
Salary 123
Age 23

**But I am getting Promise as output.** 

**SO I have rendered the promised value to a normal string and getting 'true' as final output.**

還，

• 1）這是測試異步等待模塊的正確方法嗎？

  2) 我們是否需要在此測試代碼中添加任何其他內容，例如 Settimeout 或 beforeEach 或 afterEach 塊？

  3) 我們是否需要使用 Sinon 來監視或添加存根到 googleService.js 中的“有效負載”？

任何人都可以幫助或建議我正確的道路嗎？

嘗試了按如下順序一一執行測試用例的異步方式，

const readGoogle = require('./readGoogle');

const jmsPayload = { age: '23', name: 'test', salary: '123' };

const common = require('./common');
const chaiHttp = common.chaiHttp;
common.chai.use(chaiHttp);

describe('Google ', () => {
  common.mocha.before((done) => {
    // Wait for the server to start up
    setTimeout(() => {
      done();
    }, 1000);
  });

  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
    setTimeout(() => {
    }, 1000);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
  it('POST: Google.', async () => {
    const result = readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${result.toString()}`);
  });
});

但后來我得到，

錯誤：超過 2000 毫秒的超時。 對於異步測試和鈎子，確保調用了“done()”； 如果返回 Promise，請確保它解析

提前致謝

Answer 1

您可以使用以下 2 個解決方案：

1）回調約定：

describe('Google ', () => {
    it('POST: Google.', (done) => {
        readGoogle.execute(jmsPayload).then((result) => {
            results = result;
            console.log(`Final Result : ${results.toString()}`);
            done();
        }).catch((e) => {
            done();
        });
    });
});

2）異步/等待約定

describe('Google ', () => {
  it('POST: Google.', async () => {
    const results = await readGoogle.execute(jmsPayload);
    console.log(`Final Result : ${results.toString()}`);
  });
});