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19.12. Test Driven JavaScript Development

Note: This article was originally published at Planet PHP on 19 December 2011.
Planet PHP

A couple of weeks ago, I was attending a three-day workshop for agile developer skills. The workshop was split into five topics: Colaboration, Refactoring, Design & Architecture, Continious Integration and Test Driven Development. Especially the session about Test Driven Development was very interesting. Although I know the principles of TDD I was really impressed by the demonstration of solving a simple exercise (a coding kata) done in Java by the instructors of the workshop. It was not so much the coding in Java that was interesting for me, it was the combination of writing a test, executing the test with a shortcut from the IDE, see the test fail, write the implementation and re-start the test again within the IDE. You will say A"thatAs test driven development- itAs nothing new!A" and you are right! But is there a way to do Test Driven Development in the same way for JavaScript? I mean writing a test, execute the tests with a shortcut from the IDE, see the test fail, implement the method and re-start the test? Yes, there is a way! So let me show you what I have done to do the same coding kata (called Fizzbuzz) with JavaScript.

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