bug #5528 [reate_framework] Fix mock $matcher (kenjis)

This PR was merged into the 2.3 branch.

Discussion
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[reate_framework] Fix mock $matcher

We need `getContext` method, otherwise we get:

> Fatal error: Call to a member function fromRequest() on a non-object in /Users/kenji/work/framework/src/Simplex/Framework.php on line 24

line 24:
~~~php
$this->matcher->getContext()->fromRequest($request);
~~~

Commits
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1103e00 Fix mock $matcher

Author: wouterj

create_framework/unit-testing.rst

@@ -157,6 +157,11 @@ Response::
                 }
             )))
         ;
+        $matcher
+            ->expects($this->once())
+            ->method('getContext')
+            ->will($this->returnValue($this->getMock('Symfony\Component\Routing\RequestContext')))
+        ;
         $resolver = new ControllerResolver();
 
         $framework = new Framework($matcher, $resolver);