testing - Programmatically determine current target (run or test) in iOS project

Question

Is there any way to programmatically determine if you are running code in the Test target vs the regular Run target while developing iOS applications?

I have the hack of checking if this variable is nil or not as it is only in my test target but this seems pretty hacky.

[[[NSProcessInfo processInfo] environment] objectForKey:@"XCInjectBundle"]

Answer 1

None of these answers really helped me. I wanted my app to know when I was running tests for the sole purpose of limiting the logging in my test targets. The tests run faster when I'm not logging a bunch of stuff. So, I did it by adding a custom argument to the test portion of my scheme:

In my application code, I can now check if I am testing or not:

- (void)logError:(NSError*)error{
    if([[[NSProcessInfo processInfo] arguments] containsObject:@"-FNTesting"])
        return;

    NSLog(@"LOG THE ERROR");
}

Thanks to @cameronspickert for being one of the only places I could actually find how to use the custom argument

http://cameronspickert.com/2014/02/18/custom-launch-arguments-and-environment-variables.html