Book Image

Vue.js 2 and Bootstrap 4 Web Development

By : Olga Filipova
Book Image

Vue.js 2 and Bootstrap 4 Web Development

By: Olga Filipova

Overview of this book

In this book, we will build a full stack web application right from scratch up to its deployment. We will start by building a small introduction application and then proceed to the creation of a fully functional, dynamic responsive web application called ProFitOro. In this application, we will build a Pomodoro timer combined with office workouts. Besides the Pomodoro timer and ProFitOro workouts will enable authentication and collaborative content management. We will explore topics such as Vue reactive data binding, reusable components, routing, and Vuex store along with its state, actions, mutations, and getters. We will create Vue applications using both webpack and Nuxt.js templates while exploring cool hot Nuxt.js features such as code splitting and server-side rendering. We will use Jest to test this application, and we will even revive some trigonometry from our secondary school! While developing the app, you will go through the new grid system of Bootstrap 4 along with Vue.js’ directives. We will connect Vuex store to the Firebase real-time database, data storage, and authentication APIs and use this data later inside the application’s reactive components. Finally, we will quickly deploy our application using the Firebase hosting mechanism.
Table of Contents (12 chapters)
11
Index

Testing Vue components using Jest


Let's start by testing the Header component. Since it depends on the Vuex store which, in its turn, highly depends on Firebase, we must do the exact same thing we just did to test our Vuex actions—mock the Firebase application before injecting the store into the tested component. Start by creating a spec file HeaderComponent.spec.js and paste the following to its import section:

import Vue from 'vue'
import mockFirebaseApp from '~/__mocks__/firebaseAppMock'
jest.mock('~/firebase', () => mockFirebaseApp)
import store from '~/store'
import HeaderComponent from '~/components/common/HeaderComponent'

Note that we first mock the Firebase application and then import our store. Now, to be able to properly test our component with the mocked store, we need to inject the store into it. The best way to do that is to create a Vue instance with the HeaderComponent in it:

// HeaderComponent.spec.js
let $mounted

beforeEach(() => {
  $mounted = new Vue({
    template...