手の取っ手はゼロから小さいプログラムのユニットのテストを始めます(避難所の指針とソースの追跡を付け加えます).

// components/user.js
Component({
    data: {
        nickname: ''
    },
    methods: {
        handleUserInfo: function(e) {
            this.setData({ nickname: e.detail.userInfo.nickName })
        }
    }
})

 {{nickname}}
 Oauth

Page({
    data:{}
})

{
    "name": "unit-test-demo",
    "version": "1.0.0",
    "description": "",
    "main": "app.js",
    "scripts": {
        "test": "jest"
    },
    "keywords": [],
    "author": "",
    "license": "ISC",
    "devDependencies": {
        "jest": "^24.8.0",
        "miniprogram-simulate": "^1.0.7"
    }
}

const simulate = require('miniprogram-simulate');
const path = require('path');

test('components/user', (done) => { //       ,  done           ，         jest，       
const id = simulate.load(path.join(__dirname, '../../components/user')); //     
const component = simulate.render(id); //     

const text = component.querySelector('.nickname'); //   nickname  
const button = component.querySelector('.button'); //   button  
button.dispatchEvent('getuserinfo', { //       
    detail: {   //       
        userInfo: {
            nickName: 'hello',
        },
    },
});
setTimeout(() => { //     
    expect(text.dom.innerHTML).toBe('hello'); //   text   innerHTML           
    done();
}, 1000);
});

Expected: "hello"
Received: ""
     at toBe (/Users/xialeistudio/WeChatProjects/unit-test-demo/tests/components/user.spec.js:18:32)
     at Timeout.callback [as _onTimeout] (/Users/xialeistudio/WeChatProjects/unit-test-demo/node_modules/jsdom/lib/jsdom/browser/Window.js:678:19)
     at listOnTimeout (internal/timers.js:535:17)
     at processTimers (internal/timers.js:479:7)

 Component({
     data: {
         nickname: ''
     },
     methods: {
         handleUserInfo: function(e) {
             console.log(e);
         }
     }
 })

  console.log components/user.js:21
 { type: 'getuserinfo',
   timeStamp: 948,
   target: { id: '', offsetLeft: 0, offsetTop: 0, dataset: {} },
   currentTarget: { id: '', offsetLeft: 0, offsetTop: 0, dataset: {} },
   detail: {},
   touches: {},
   changedTouches: {} }

//      
  const customEvent = new CustomEvent(eventName, options);

  //       
  setTimeout(() => {
    dom.dispatchEvent(customEvent);

    exparser.Event.dispatchEvent(customEvent.target, exparser.Event.create(eventName, {}, {
      originalEvent: customEvent,
      bubbles: true,
      capturePhase: true,
      composed: true,
      extraFields: {
        touches: options.touches || {},
        changedTouches: options.changedTouches || {},
      },
    }));
  }, 0);