Unit Testing in Xcode, does it run the app?

Question

I\'m running into a strange problem that I haven\'t run into before.

When you do cmd+U to run your Unit Tests (OCUnit for example) does it actually call the main.m,

Answer 1

Here's a variation of Sulthan's answer that uses XCTest, which is the default for test classes generated by XCode 5.

int main(int argc, char * argv[])
{
    @autoreleasepool {
        BOOL runningTests = NSClassFromString(@"XCTestCase") != nil;
        if(!runningTests)
        {
            return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
        }
        else
        {
            return UIApplicationMain(argc, argv, nil, @"TestAppDelegate");
        }
    }
}

This goes into main.m, which should be under Supporting Files in a standard project layout.

Then in your tests directory add:

TestAppDelegate.h

#import 

@interface TestAppDelegate : NSObject
@end

TestAppDelegate.m

#import "TestAppDelegate.h"

@implementation TestAppDelegate
@end