needed to test the Symfony core code itself.

Each test - whether it's a unit test or a functional test - is a PHP class

this rule, then you can run all of your application's tests with the following

command:

Testing Configuration

``test`` environment. Since Symfony loads the ``app/config/config_test.yml``

in the ``test`` environment, you can tweak any of your application's settings

specifically for testing.

Each application has its own PHPUnit configuration, stored in the

.. tip::

``phpunit.xml`` file.

.. code-block:: xml

To include other directories in the code coverage, also edit the ``<filter>``

section:

.. code-block:: xml

Learn more