Handle swift logs and testing safely and painless

Test.swift

/*
  
  This gist is part of the post "Handle swift logs and testing safely and painless"
  
  More info here:
  https://medium.com/@MarioIannotta/handle-swift-test-and-log-safely-c825d6006bc4#.363uu3a94
  
*/

import Foundation

enum Test {
    
    case kittensVC
    case kittensNetworkService
    case kittensTableView
    
    typealias TestBlock = () -> ()
    
    static private let defaultDelay: NSTimeInterval = 0.01
    
    func isEnabled() -> Bool {
        
        #if !DEBUG
            return false
        #endif
        
        switch self {
            
        case kittensVC:
            return true
            
        case kittensNetworkService:
            return true
            
        case kittensTableView:
            return true
            
        default:
            return false
            
        }
        
    }
    
    func performBlock(withDelay delay: NSTimeInterval = defaultDelay, block: TestBlock) -> Bool {
        
        if self.isEnabled() {
            
            Test.performBlockAfterDelay(delay, block: block)
            return true
            
        }
        
        return false
        
    }
    
    static func performBlockFor(sections: [Test], withDelay delay: NSTimeInterval = defaultDelay, block: TestBlock) {
        
        for section in sections {
            
            if section.performBlock(withDelay: delay, block: block) {
                return
            }
            
        }
        
    }
    
    static private func performBlockAfterDelay(delay: NSTimeInterval, block: TestBlock) {
        
        let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(delay * Double(NSEC_PER_SEC)))
        
        dispatch_after(delayTime, dispatch_get_main_queue()) {
            block()
        }
        
    }
    
}