Now that we are confident (again) about the code we have written, we can

safely think about the next batch of features we want to add to our framework.

.. _`PHPUnit`:http://www.phpunit.de/manual/current/en/index.html

.. _`test doubles`:http://www.phpunit.de/manual/current/en/test-doubles.html

.. _`PHPUnit`:http://phpunit.de/manual/current/en/index.html

.. _`test doubles`:http://phpunit.de/manual/current/en/test-doubles.html

.. _`XDebug`:http://xdebug.org/