A toolkit with common assertions and mocks that plays nicely with the standard library
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).
generate massive amounts of realistic fake data in Node.js and the browser
Most popular Mocking framework for unit tests written in Java