Question

我有以下代码，我正在尝试创建单元测试确保sendToGoogle函数正常工作，因此我对gmail.users.messages的send方法进行了存根处理，并期望该方法由sendToGoogle方法调用，但出现此错误

AssertionError：预期发送至少已被调用一次，但是从来没有叫过

// email.js

 const helper = require('./helper')

 /**
  * sendEmail - sends an email to a given address
  *
  * @param {String} to - The address of the recipient.
  * @param {String} from - The address of the sender.
  * @param {String} subject - subject of the email.
  * @param {String} bodyText - text of the email.
  **/
function sendEmail(to, from, subject, bodyText) {
  const oAuthClient = helper.getAuth(process.env.CLIENT_ID, process.env.PRIVATE_KEY, from);
  const emailLines = helper.createEmail(to, from, subject, bodyText);
  helper.sendToGoogle(oAuthClient, from, emailLines);
}

 module.exports.sendEmail = sendEmail;

这是包含我的代码的helper.js

// helper.js

const {google} = require('googleapis');
const base64 = require('base-64');
const gmail = google.gmail("v1");

 /**
  * createEmail - createEmail an email message
  *
  * @param {String} to - The address of the recipient.
  * @param {String} from - The address of the sender.
  * @param {String} subject - subject of the email.
  * @param {String} bodyText - text of the email.
  * @return {String} - Message to send.
  **/

const createEmail = function (to, from, subject, bodyText) {
  const emailLines = ["Content-Type: text/plain; charset=\"UTF-8\"\n",
    "MIME-Version: 1.0\n",
    "Content-Transfer-Encoding: 7bit\n",
    "to: ", to, "\n",
    "from: ", from, "\n",
    "subject: ", subject, "\n\n",
    bodyText
  ].join('')
  const messageBase64 = base64.encode(emailLines.trim()).replace(/\+/g, '-').replace(/\//g, '_');
  return messageBase64
}
  /**
   *
   *
   * @param {String} clientKey
   * @param {String} privateKey
   * @param {String} from
   * @returns
   */
  const getAuth = function (clientKey, privateKey, from) {
    return new google.auth.JWT(
      clientKey,
      null,
      privateKey,
      ['https://www.googleapis.com/auth/gmail.send'],
      from
    );
  }
   /**
    * @param {String} oAuthClient
    * @param {String} from
    * @param {String} message
    */
   const sendToGoogle = function (oAuthClient, from, message) {
     console.log("sendtogoogle calllled")
     gmail.users.messages.send({
       auth: oAuthClient,
       userId: from,
       resource: {
         raw: message
       }
     }, function (err, resp) {
       if (!err) {
         return resp
       }
       console.error(err)

     });
   }
  module.exports.createEmail = createEmail
  module.exports.getAuth = getAuth
  module.exports.sendToGoogle = sendToGoogle

这是单元测试文件

// email.spec.js

 it ("send to gmail",function(){
   const gmail = google.gmail("v1");
   const SendStub = sinon.stub(gmail.users.messages, 'send').returns('test')
   const result = helper.sendToGoogle("oAuthClient", from,"message")
   SendStub.should.have.been.called
  })

感谢您的帮助。

Answer 1

Sinon文档没有更新，我也浪费了太多时间，发现解决方案适合我的情况。

    sandbox.stub(gmail.users.messages, 'send').callsFake(() => {
        return 'test';
    });

Answer 2

我已通过导出gmail并将其导入我的测试文件中解决了该问题，所以我存根相同的实例。

googleApi的单元测试

2 个答案: