Fix broken AppTest
Fix broken AppTest

Due to the request being called in the router creation process the tests
failed, because you cannot overwrite request once it had been created

iinux/Slim,feryardiant/slim,dopesong/Slim,Sam-Burns/Slim,designermonkey/Slim,jaapverloop/Slim,akrabat/Slim,mnapoli/Slim,foxyantho/Slim,juliangut/Slim,iinux/Slim,RealSelf/Slim,AndrewCarterUK/Slim,iinux/Slim,slimphp/Slim,JoeBengalen/Slim