Objective-C code to run a blank app delegate on Test.

main.m

#import <UIKit/UIKit.h> 
#import "AppDelegate.h"
#import "TestAppDelegate.h"
 
int main(int argc, char *argv[])  
{
    @autoreleasepool
    {
        BOOL runningTests = (NSClassFromString(@"XCTestCase") != nil);
        return UIApplicationMain(argc, argv, nil, NSStringFromClass((!runningTests?[AppDelegate class]:[TestAppDelegate class])));
    }
}