[Vuejs]-How to properly test component logic in Vue.js

We have done unit test using vue-jest. Here are the steps.

1. Use the following code to set up the crypto property globally. This will allow Jest to access window.crypto and won’t cause any issue.Create a crypto.mock file and paste following code.

   const crypto = require(‘crypto’)

    Object.defineProperty(global.self, 'crypto', {
      value: {
        getRandomValues: arr => crypto.randomBytes(arr.length)
      }
    })
   

2. Now import this file in your test file component. Now You can use jasmine.Spy to spy on the elements.

    let spyFor: jasmine.Spy; spyFor = spyOn(function.hello, 'hello'); expect(spyFor).toHaveBeenCalledTimes(1);
   

In this way you can mock on the methods. Pls free to ask if you have anything more.