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Label Media Blog: Test Driven Development with PHPUnit

Note: This article was originally published at PHPDeveloper on 4 December 2010.
PHPDeveloper

New on the Label Media blog today Sam Holman has posted his introductory look at doing Test Driven Development (TDD) with the help of the popular PHP unit testing tool PHPUnit.

I couldn't find any recent surveys looking into the percentage of software development teams that make use of TDD, but i'd hazard a guess that it's probably not as high as it perhaps should be. I think there are a number of reasons for this, but it's primarily all about the people. The technologies are here, you've just got to start using them - which begins by understanding why they should be used. [...] There are a number of test frameworks for PHP, the biggest of which are probably PHPUnit and SimpleTest. My preference is for PHPUnit, which is the one I'll be using here.

He walks you through the basics first - installation of PHPUnit from its PEAR channel and setting up some basics tests. From there he moves into the TDD-ness stage, creating a sample class to test the getting and setting of values from a configuration class. He also provides the class that's something like your end result should be.