HelloTDDViewController.m

@implementation HelloTDDViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    _nameField.accessibilityLabel = @"Name";
    _helloLabel.accessibilityLabel = @"Greeting";
    GreetingFactory *greetingFactory = [[GreetingFactory alloc] init];
    _delegate = greetingFactory;
}

//...

@end