Question

So I have been playing with GHUnit today, and have some nice tests which run just fine in the similator in XCode4. When I run them on the iPhone itself I get the following error:

'Unable to instantiate the UIApplication delegate instance.
No class named GHUnitIPhoneAppDelegate is loaded.'

Before you ask, yes I have the linker options -ObjC and -all_load set, and as I said, it works fine in the simulator, so why not the iPhone itself?

Puzzled!

Answer 1

I am not sure to have the real reason of this problem but I did find a workaround.

For a reason I am still not quite sure to understand replacing:

int retVal = UIApplicationMain(argc, argv, nil, @"GHUnitIPhoneAppDelegate");

by

int retVal = UIApplicationMain(argc, argv, nil, @"GHUnitIOSAppDelegate");

in the main file will fix the problem.

The class GHUnitIPhoneAppDelegate inherits from GHUnitIOSAppDelegate
but it is not included in the final binary (I ran a nm -a GHUnitIPhoneAppDelegate|grep IPhoneAppwith no result).

A wild guess is that since the class only inherits from it (no additional methods or attributes) and because nowhere in the framework this class is instantiated (only mentioned through a string), the compiler, to save space, removes it from the binary information in iOS mode.

Hope this helps, at least that worked for me.