Testing Vue.js Components with Jest

A concise guide to testing Vue.js components using Jest and the official Vue Test Utils library

By: Alex Jover Morales

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Paperback | 17 October 2019

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Unit test your Vue.js components with this fully-featured JavaScript testing framework

Key Features

Understand the various testing styles and their purpose
Gain insight into how to test methods by avoiding dependencies
Explore snapshot testing and its applications

Book Description

Unit testing in modern component-based JavaScript frameworks is not straightforward. You need a test suite that is reliable and runs quickly. Components are connected to one another, and the browser adds a layer of UI, which makes everything inter-dependent while we test components in isolation. Jest is a fully-featured JavaScript testing framework that will do all your work for you.

This book shows you how to test Vue.js components easily and take advantage of the fully-featured Jest testing framework with the aid of practical examples. You'll learn the different testing styles and their structures. You'll also explore how your Vue.js components respond to various tests. You'll see how to apply techniques such as snapshot testing, shallow rendering, module dependency mocking, and module aliasing to make your tests smooth and clean.

By the end of this book, you'll know all about testing your components by utilizing the features of Jest.

What you will learn

Set up a Vue-test project to get started with Jest
Unit test your components using techniques such as shallow rendering
Gain insights into how to test the reactive parts in the logic of the Vue.js components
Explore how to test deeply rendered Vue.js components
Perform easy and quick tests with module dependency mocking, module aliasing, and more
Know-how and when to use snapshot testing

Who this book is for

If you are a programmer looking to make your development process smooth and bug-free, this is an ideal book for you. Prior knowledge and experience of JavaScript will help you quickly and easily grasp the concepts explained in this book.

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