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Full-Stack Web Development with Vue.js and Node

You're reading from   Full-Stack Web Development with Vue.js and Node Build scalable and powerful web apps with modern web stack: MongoDB, Vue, Node.js, and Express

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788831147
Length 366 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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 Sharma Sharma
Author Profile Icon Sharma
Sharma
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Table of Contents (17) Chapters Close

Title Page
Copyright and Credits
PacktPub.com
Contributors
Preface
1. Introducing MEVN FREE CHAPTER 2. Building an Express Application 3. Introducing MongoDB 4. Introducing REST APIs 5. Building the Real Application 6. Building Authentication with passport.js 7. Building OAuth Strategies with passport.js 8. Introducing Vuex 9. Testing an MEVN Application 10. Going Live 1. Other Books You May Enjoy Index

Introducing Mocha


Let's create a separate working directory to learn to write tests. Create a folder called test_js  and switch to the test_js directory:

> mkdir test_js
> cd test_js

Let's also create a separate folder for test inside the test_js folder:

> mkdir test

To access mocha, you have to install it globally:

$ npm install mocha -g --save-dev

Let's write a simple test code in mocha. We will write a test for a simple function, which takes two arguments and returns the sum of the arguments.

Let's create a file called add.spec.js inside the test folder and add the following code:

const addUtility = require('./../add.js');

Then, run the following command from the test_js folder:

$ mocha

This test will fail, and we will require a utility called add.js, which does not exist. It displays the following error:

Let's go ahead and write just enough code to pass the test. Create a file called add.js in the root of the test_js project and run the code again, which should pass:

Let's go ahead and add...

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