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java script unit testing framework
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java script unit testing framework Presentation Transcript

  • 1. JavaScript Unit Testing Hanoi PHP Day 2010 @hoatle
  • 2. JavaScript Unit Testing FrameworkPresenter: 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
  • 3. Agenda» JavaScript» Unit Testing» JavaScript Unit Testing Frameworks» Fun time for coding 3
  • 4. JavaScript
  • 5. 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 worlds most misunderstood programming language” (Douglas Crockford) ∀ The Name ∀ Bad books ∀ Amateurs ∀ Object Oriented? 5
  • 6. Unit Testing
  • 7. 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
  • 8. Samples (Java - JUnit) 8
  • 9. Samples (Java - JUnit) 9
  • 10. Samples (JavaScript - QUnit) 10
  • 11. Samples (JavaScript - QUnit) 11
  • 12. 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
  • 13. Test Driven Development (TDD) (wikipedia) 13
  • 14. Unit Testing Benefits» To isolate each part of the program and show that the individual parts are correct» Facilitates change» Documentation» Design 14
  • 15. JavaScript Unit Testing Frameworks
  • 16. JavaScript Unit Testing Frameworks 16
  • 17. Fun time for JavaScript Unit Testing and Q&A?