gistfile1.txt

/// ---------------- When a presenter is UIViewController
class View: UIView {
    let loadButton = UIButton()
    let priceLabel = UILabel()
}

class Presenter : UIViewController { 
    var price: Int?
    
    var theView: View {
       return super.view as! View
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        loadData { result in
            updateUIForPrice()
        }
    }
    
    func didTapLoadButton(button: UIButton) {
        loadData { result in
           updateUIForPrice()
        }
    }
    
    func loadData(completion: ((success: Bool) -> Void)) {
        // loading data
        price = loadedPrice
        completion?(true)
    }
    
    func updateUIForPrice() {
       self.theView.priceLabel.text = String(self.price!)
    }
}

class Presenter: XCTestCase {
   func testViewDidLoad() {
      let presenter = Presenter.getFromStryboard()
      stubRequest()
      // check after time price
   }
   
   func testDidTapLoadButton() {
      let presenter = Presenter.getFromStryboard()
      stubRequest()
      // check after time price
   }
   
   func testUpdateUIForPrice() {
      let presenter = Presenter.getFromStryboard()
      // test set price for priceLabel 
   }
    
   func testSuccessfulLoadData() {
        let presenter = Presenter.getFromStryboard()
        stubRequest()
        presenter.loadData {

        }
    }
    
    func testFailedLoadData() {
        let presenter = Presenter.getFromStryboard()
        stubRequest()
        presenter.loadData {

        }
    }
}

/// ---------------- MVP
class View: UIViewController {
    let loadButton = UIButton()
    let priceLabel = UILabel()
    
    let presenter: Presenter!
    
    func set(price: Int) {
       self.priceLabel.text = String(self.price!)
    }
    
    func didTapLoadButton(button: UIButton) {
        presenter.didTapLoadButton()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        presenter.viewDidLoad()
    }
}

class Presenter : NSObject { 
    var price: Int?
    
    let view: View!
    
    func viewDidLoad() {
        loadData { result in
            view.set(price: price!)
        }
    }
    
    func didTapLoadButton() {
        loadData { result in
            view.set(price: price!)
        }
    }
    
    func loadData(completion: ((success: Bool) -> Void)) {
        // loading data
        price = loadedPrice
        completion?(true)
    }
}

class View: XCTestCase {
   func testSetPrice() {
      let view = View.getFromStoryboard()
      // test set price for priceLabel 
   }

   func testViewDidLoad() {
      let view = View.getFromStoryboard()
      stubRequest()
      // check after time price
   }
   
   func testDidTapLoadButton() {
       let view = View.getFromStoryboard()
       stubRequest()
      // check after time price
   }
}

class Presenter: XCTestCase {
    func testSuccessfulLoadData() {
        let presenter = Presenter()
        stubRequest()
        presenter.loadData {

        }
    }
    
    func testFailedLoadData() {
        let presenter = Presenter()
        stubRequest()
        presenter.loadData {

        }
    }
}