Add tests for csrf middleware
Add tests for csrf middleware

chinazhaghai/connect,RickyDan/connect,keenwon/connect,qitianchan/connect,tanveer12332/connect,dkfiresky/connect,behind2/connect,wghust/connect,khalerc/connect,mi2oon/connect,llwanghong/connect,khirayama/connect,davehorton/drachtio,senchalabs/connect,gtomitsuka/connect,liuwei9413/connect,RoseTHERESA/connect,austincitylimits/connect,lian774739140/connect,mi2oon/connect