java script unit testing framework

JavaScript Unit Testing
Hanoi PHP Day 2010
@hoatle

JavaScript Unit Testing Framework

Presenter: Hoat Le Van (aka hoatle)
» eXo Social Team Leader
» Hanoi PHP Day:
>
2008: attendee
>
2009: Advanced JavaScript Techniques
>
2010: JavaScript Unit Testing Framework
» Work mostly with Java but have much interest in JavaScript
» Twitter: @hoatle

2

Agenda

» JavaScript
» Unit Testing
» JavaScript Unit Testing Frameworks
» Fun time for coding

3

What is JavaScript?

» An implementation of the ECMAScript language standard
» The King of client-side scripting for web
» A prototype-based object-oriented scripting language
» “The world's most misunderstood programming language” (Douglas Crockford)
∀
The Name
∀
Bad books
∀
Amateurs
∀
Object Oriented?

5

What is Unit Testing?

» Units of source code are tested
» Written and run by developers to ensure that code meets its design and behaves
as intended and expected
» Commonly automated
» Extreme Programming uses the creation of unit tests for test-driven
development

7

Samples (Java - JUnit)

8

Samples (Java - JUnit)

9

Samples (JavaScript - QUnit)

10

Samples (JavaScript - QUnit)

11

Test Driven Development (TDD)

» Writes a failing automated test case that defines a desired improvement or new
function
» Implements code to pass that test
» Finally refactors

12

Test Driven Development (TDD)

(wikipedia)

13

Unit Testing Benefits

» To isolate each part of the program and show that the individual parts are
correct
» Facilitates change
» Documentation
» Design

14

JavaScript Unit Testing Frameworks

JavaScript Unit Testing Frameworks

16

Fun time for JavaScript Unit Testing
and Q&A?

java script unit testing framework

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