tweaked docs

doc/advanced.rst

@@ -832,11 +832,17 @@ The ``getTests()`` methods allows to add new test functions::
         // ...
     }
 
+Testing an Extension
+--------------------
+
+.. versionadded:: 1.10
+    Support for functional tests was added in Twig 1.10.
+
 Functional Tests
 ~~~~~~~~~~~~~~~~
 
-You can create functional tests for extensions simply by creating the following file structure
-in your test directory::
+You can create functional tests for extensions simply by creating the
+following file structure in your test directory::
 
     Fixtures/
         filters/
@@ -868,15 +874,17 @@ The ``IntegrationTest.php`` file should look like this::
         }
     }
 
-Fixtures examples can be found within the Twig repository ``tests/Twig/Fixtures`` directory.
+Fixtures examples can be found within the Twig repository
+`tests/Twig/Fixtures`_ directory.
 
 Node Tests
 ~~~~~~~~~~
 
 Testing the node visitors can be complex, so extend your test cases from
-``Twig_Test_NodeTestCase``. Examples can be found in the Twig repository ``tests/Twig/Node`` directory.
+``Twig_Test_NodeTestCase``. Examples can be found in the Twig repository
+`tests/Twig/Node`_ directory.
 
 .. _`spl_autoload_register()`: http://www.php.net/spl_autoload_register
-.. _`rot13`: http://www.php.net/manual/en/function.str-rot13.php
-.. _`tests/Twig/Fixtures`: https://github.com/fabpot/Twig/tree/master/test/Twig/Tests/Fixtures
-.. _`tests/Twig/Node`: https://github.com/fabpot/Twig/tree/master/test/Twig/Tests/Node
+.. _`rot13`:                   http://www.php.net/manual/en/function.str-rot13.php
+.. _`tests/Twig/Fixtures`:     https://github.com/fabpot/Twig/tree/master/test/Twig/Tests/Fixtures
+.. _`tests/Twig/Node`:         https://github.com/fabpot/Twig/tree/master/test/Twig/Tests/Node