This course takes developers from writing their first unit test in PHPUnit to improving code coverage in their applications. Justin Yost covers writing test doubles to deal with dependencies in software, writing exception-based tests, and rapidly adding test cases to the core suite of unit tests. Developers will come away with a basic understanding of the test-driven development (TDD) cycle and understand how to use unit tests to write code, as well as refactor legacy code.

Topics include:
* Why use unit testing?
* Writing unit tests
* Extending unit tests
* Filtering PHPUnit tests
* Building dummy objects
* Working with data providers
* Writing an exception-based test
* Using TDD tactics
* Using PHPUnit advanced tactics, such as database tests

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