Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).
Next-gen phpDoc parser with support for intersection types and generics
vfsStream is a stream wrapper for a virtual file system that may be helpful in unit tests to mock the real file system. It can be used with any unit test framework, like PHPUnit or SimpleTest.
A model factory library for creating expressive, auto-completable, on-demand dev/test fixtures with Symfony and Doctrine.
Tester: enjoyable unit testing in PHP with code coverage reporter. 🍏🍏🍎🍏
CakePHP Fixture Factories - maintained version with modern approach.