Mock Object library for PHPUnit

Latest Stable Version Minimum PHP Version Build Status


PHPUnit_MockObject is the default mock object library for PHPUnit.


  • PHP 5.6 is required but using the latest version of PHP is highly recommended


You can add this library as a local, per-project dependency to your project using Composer:

composer require phpunit/phpunit-mock-objects

If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:

composer require --dev phpunit/phpunit-mock-objects