public function testApplyMultipleFilters()
 {
     $rock = new \Rocker\Server(array('application.path' => '/', 'application.filters' => array(array('user.filter' => function ($server, $content) {
         $content['b'] = 2;
         return $content;
     }), array('user.filter' => function ($server, $content) {
         $content['c'] = 3;
         return $content;
     }))), false);
     $this->assertEquals(array('a' => 1, 'b' => 2, 'c' => 3), $rock->applyFilter('user.filter', array('a' => 1), null, null));
 }