Mocha之前沒有在套件之前運行

Question

我是Node和Mocha的新手，我很難理解為什么Mocha會跳過我的'before'鈎子代碼來創建一個Json Web Token，如下例所示：

 //index.js const createJWT = require('./lib/config/createJWT'); const expect = require('chai').expect; before(async() => { const jwt = await createJWT() { return new Promise( function(resolve, reject) { resolve(jwt); } ) } const person = createPerson(jwt); }); //this is where the jwt is created, making it useless for createPerson describe('My other tests', () => { it('Customer sign up', async() => { const signUpText = await customerSignUp(page, frame); expect(signUpText).to.equal("You have signed up") }); }); }); 

createJWT（）方法如下：

  //createJWT.js module.exports = async() => { const options = { method: 'POST', url: 'https://my-website.auth.io/oauth/token', headers: { 'content-type': 'application/json' }, body: '{"client_id":"dew76dw7e65d7w65d7wde"}' }; request(options, function (error, response, body) { try { console.log(body); jwt = body; return jwt = body; } catch (error) { } }); }; 

當我調試時，跳過設置代碼。 有什么明顯的東西我不見了嗎？

Answer 1

我很確定你需要將before hook放在同一個測試塊中，以便在處理之前運行它。 例如：

before(async() => {

  const jwt = await createJWT();

});

describe('My other tests', () => {
  it('Customer sign up', async() => {
    const signUpText = await customerSignUp(page, frame);

    expect(signUpText).to.equal("You have signed up")
  });
});

要么 ：

describe('My other tests', () => {
  before(async() => {

    const jwt = await createJWT();

  });
  it('Customer sign up', async() => {
    const signUpText = await customerSignUp(page, frame);

    expect(signUpText).to.equal("You have signed up")
  });
});

此外，您的createJwt方法不返回Promise，這會阻止await工作。 你需要做這樣的事情：

module.exports = async() => {

  const options = {
    method: 'POST',
    url: 'https://my-website.auth.io/oauth/token',
    headers: {
      'content-type': 'application/json'
    },
    body: '{"client_id":"dew76dw7e65d7w65d7wde"}'
  };

  return new Promise((resolve, reject) => request(options, function (error, response, body) {
    if(error) {
      reject(error);
    }
    resolve(body);
  }));
};