Unit Testing with Netbeans [Mocha]

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Table of Contents

Versions used

Netbeans IDE 8.2
Mocha 4.0.1 – Our Testing Tool
Chai 4.1.2 – An Assert Library

Create a HTML5 Project with Javascript Support inside Netbeans

Create a HTML5/Javascript Project and add Javascript File main2.js to the project
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Note: exports is a node.js concept that declares the functions that your module makes available to code outside itself

Setup Mocha as Testing Provider

Change Project Properties for Javascript Testing
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Setup Mocha/Chai [ Open a Netbeans Terminal Window]

Initialize new Node.js Project


$ cd D:\xampp\htdocs\pv\mochaTest2
$ npm init                                                                                                                                                                                  
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install ` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
package name: (mochatest2) 
version: (1.0.0) 
description: Mocha/Chai Testing
entry point: (index.js) main2.js
test command: mocha
git repository: 
keywords: 
author: Helmut
license: (ISC) MIT
About to write to D:\xampp\htdocs\pv\mochaTest2\package.json:

{
  "name": "mochatest2",
  "version": "1.0.0",
  "description": "Mocha/Chai Testing",
  "main": "main2.js",
  "directories": {
    "test": "test"
  },
  "scripts": {
    "test": "mocha"
  },
  "author": "Helmut",
  "license": "MIT"
}


Is this ok? (yes) yes

helmut@myPC /cygdrive/d/xampp/htdocs/pv/mochaTest2

Setup Mocha and Chai in our Netbeans Project Base Directory

helmut@myPC /cygdrive/d/xampp/htdocs/pv/mochaTest2
$  npm install mocha                                                                                                                                                                       
npm WARN mochatest2@1.0.0 No repository field.
+ mocha@4.0.1
added 24 packages in 2.189s

helmut@myPC /cygdrive/d/xampp/htdocs/pv/mochaTest2
$  npm install chai                                                                                                                                                                          
npm WARN mochatest2@1.0.0 No repository field.

+ chai@4.1.2
added 7 packages in 1.304s

Verify package.json – created by our previous setup steps

helmut@myPC /cygdrive/d/xampp/htdocs/pv/mochaTest2
$ cat   package.json 
{
  "name": "mochatest2",
  "version": "1.0.0",
  "description": "Mocha/Chai Testing",
  "main": "main2.js",
  "directories": {
    "test": "test"
  },
  "scripts": {
    "test": "mocha"
  },
  "author": "Helmut",
  "license": "MIT",
  "dependencies": {
    "chai": "^4.1.2",
    "mocha": "^4.0.1"
  }
}

Create and Run Mocha testscript manually under Unit Test direcorty

Manually run Mocha Tests via Netbeans Terminal Window
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Our test script mochaTest2.js imports the functions from Chai and main2.js via require()
describe()` is merely used for grouping test Tests – can be nested if needed
`it()` is a test case

Finally run Neteans Unit Tests [ ALT F6]

Open Netbeans Test Result Window to review Test Results
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Note: If Netbeans IDE hangs during Testing you may need to restart Netbeans to fix this !

Reference

How To Unit Testing JavaScript with Netbeans
Mocha Homepage
Working with package.json
An Absolute Beginner’s Guide to Using npm
Understanding module.exports and exports in Node.js

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