I want to test Mraid (http://www.iab.net/mraid) on mobile application, but I can\'t find a good solution.
in this link : https://github.com/mikerowehl/mraid-testing
As you already know Mraid compatible Ads contain HTML+ Javascript(And javascript uses Mraid API). Since you don't have any server that delivers Mraid Ads to you.What I would do is simply create some index.html resource file inside your APP and load this resource within the webview where you want to load the Ad.
E.g. In IOS check this stackoverflow link for:how to load javascript into webview from local resources
Just create some basic Mraid Ad (there are lots of examples on this site https://wiki.operamediaworks.com/display/AMS/MRAID+Sample+Ads and I usually use this mraid diagnostics Ad to test all the mraid related functionality http://admarvel.s3.amazonaws.com/demo/mraid/MRAID_v2_diagnostics.txt).
Hope it helps!