Node JS单元测试-云函数，如何调用内部函数

Question

我正在使用 AVA 框架 (https://github.com/avajs/ava/blob/HEAD/docs/01-writing-tests.md) 在用 NodeJS 编写的 GCP 上测试 Cloud Function。 我正在尝试对我的云函数中的内部函数进行单元测试。

我的测试代码如下：

const test = require(`ava`);
const uuid = require(`uuid`);
const sinon = require(`sinon`);


const triggerResultsService = require(`..`).triggerResultsService;
const consoleLog = sinon.stub(console, 'log');
const sendToTransferService = require(`..`).triggerResultsService.sendToTransferService;

test('resolves with unicorn', t => {

    const filename = uuid.v4();
     sendToTransferService(filename, () =>{


     });

     return Promise().then(result => {
         t.is(result, 'unicorn');
     });
});

My Cloud 功能代码如下：

/**
 * Generic background Cloud Function to be triggered by Cloud Storage.
 *
 * @param {object} event The Cloud Functions event.
 * @param {function} callback The callback function.
 */

var request = require("request");

exports.triggerResultsService = (event, callback) => {
  var file = event.data;
  var fileName = file.name.substr(file.name.lastIndexOf('/')).toLowerCase().trim();
  if(!fileName.includes('temp-') && fileName.includes('.csv.gz')) {
    console.log("file name is in correct location, sending options");
    sendToTransferService(file);
    sendStatusEmail("Transfer File Call successful");
  };
  callback();
};

function sendToTransferService(file) {
  var options = {
    method: 'POST',
    uri: process.env.TRANSFER_SERVICE_URL,
    body: {
       fileName: file.name,
       bucketName: file.bucket
    },
    json: true
   };
  return new Promise(function (resolve, reject) {
    request(options, function (err, resp) {
       if (err) {
          console.log(err);
          return reject({err: err});
       }
    return resolve({responsebody:resp.body});
    });
  });
}

   function sendStatusEmail(statusMessage) {
  var options = {
    method: 'POST',
    uri: process.env.EMAIL_NOTIFICATION_URL,
    body: {
        from: process.env.EMAIL_FROM,
        to: [process.env.SLACK_EMAIL],
        cc: [''],
        bcc: [''],
        subject: process.env.EMAIL_SUBJECT,
        body: statusMessage
    },
    json: true
  };

  return new Promise(function (resolve, reject) {
    request(options, function (err, resp) {
       if (err) {
          console.log(err);
          return reject({err: err});
       }
    return resolve({responsebody:resp.body});
    });
 });
}

我无法访问函数 sendToTransferService 。 任何想法我应该要求/声明什么

提前致谢

Answer 1

我认为最简单的方法是将该函数转换为自己的模块，然后从那里导出。导入该模块的任何其他代码都可以访问它，包括您的 Cloud Functions 代码。