Jasmine (JavaScript testing framework)

Jasmine is an open source unit testing framework for testing JavaScript code.

It uses the behavior-driven development model.

Description

It aims to run on any JavaScript-enabled platform, to not intrude on the application nor the IDE, and to have easy-to-read syntax.

Jasmine has a number of other features, such as custom matchers, spies, and support for asynchronous specifications.

Installing Jasmine standalone on local box

Download the standalone distribution for your desired release from the releases page

Create a Jasmine directory in your project - mkdir my-project/jasmine

Move the dist to your project directory -

mv jasmine/dist/jasmine-standalone-2.0.0.zip my-project/jasmine

Change directory - cd my-project/jasmine

Unzip the dist - unzip jasmine-standalone-2.0.0.zip

Add the following to your HTML file:

<link rel="shortcut icon" type="image/png" href="jasmine/lib/jasmine-2.0.0/jasmine_favicon.png">
<link rel="stylesheet" type="text/css" href="jasmine/lib/jasmine-2.0.0/jasmine.css">

<script type="text/javascript" src="jasmine/lib/jasmine-2.0.0/jasmine.js"></script>
<script type="text/javascript" src="jasmine/lib/jasmine-2.0.0/jasmine-html.js"></script>
<script type="text/javascript" src="jasmine/lib/jasmine-2.0.0/boot.js"></script>

Examples

A simple hello world test looks like the code below, where describe() describes a suite of tests and it() is an individual test specification.

The name "it()" follows the idea of behavior-driven development and serves as the first word in the test name, which should be a complete sentence.

The code below tests this function:

function helloWorld() {
  return 'Hello world!';
}

and verifies that its output is indeed the text "Hello world!".

describe('Hello world', function() {
  it('says hello', function() {
    expect(helloWorld()).toEqual('Hello world!');
  });
});

Influences

It is heavily influenced by other unit testing frameworks, such as ScrewUnit, JSSpec, JSpec, and RSpec.

See also

• Behavior-driven development
• Unit testing

External links

• Official website
• Introduction @ jasmine.github.io
• Jasmine (JavaScript testing framework) @ Wikipedia
• Testing JavaScript Using the Jasmine Framework by Rob Gravelle
• Testing Your JavaScript With Jasmine by Andrew Burgess
• How do I Jasmine: a tutorial by Evan Hahn
• Testing Javascript: get started with Jasmine by Katie Fenn
• JavaScript: Jasmine for unit testing by Adam Cameron
• Jasmine BDD for Javascript by Luis Alfredo Porras Páez
• Pragmatic JavaScript Testing with Jasmine by Jared Carroll
• Test your JavaScript with Jasmine part 1 by Jean Philippe Boily
• Jasmine – JavaScript Unit Testing Tutorial with Examples by Lokesh Gupta
• JavaScript TDD with Jasmine and Karma by Krol Tech
• Testing JavaScript Code with Jasmine Jason Gilmore
• JavaScript Testing with Jasmine by Codeship
• DRYing Up Your JavaScript Jasmine Tests With the Data Provider Pattern by JP
• JavaScript Unit Testing With Jasmine: Part 1 by Joe Zim+
• Introduction to JavaScript BDD Testing With Jasmine Library by Ivan Jovanovic
• Jasmine - Testing JavaScript by Sharon Sudhan
• Jasmine - JavaScript Testing by Yang Zhao
• Getting Started with Node.js and Jasmine by Igor Šarčević

General principles of testing

• Writing Testable JavaScript by Ben Cherry

Online tools

• Try Jasmine]

YouTube videos

• Unit Testing in JavaScript via Jasmine by Jesse Warden
• Jasmine: BDD Style JavaScript Testing Hello World by Chris McNabb