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QUnit - jQuery JavaScript Library

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Saved by 5 people (0 private), first by anonymouse user on 2008-05-27


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QUnit is the unit testrunner for the jQuery project. It got promoted to a top-level project in May 2008 to make it easier to use in other projects, with focus on jQuery UI. Every plugin developer can leverage the testsuite to unit test their code.

It's especially useful for regression testing: Whenever a bug is reported, write a test that asserts the existence of that particular bug. Then fix it and commit both. Every time you work on the code again, run the tests. If the bug comes up again - a regression - you'll spot it immediately and know how to fix it, because you know what code you just changed.

Having good unit test coverage makes safe refactoring easy and cheap. You can run the tests after each small refactoring step and always know what change broke something.

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