View controller sobre el que haremos las pruebas de las acciones con KIF

SuperHeroControlsViewController.swift

// --------------------------------------------- //
// -------------- VIEW CONTROLLER -------------- //
// --------------------------------------------- //

import UIKit

class SuperHeroControlsViewController: UIViewController {

    var textField: UITextField!
    var slider: UISlider!
    var button: UIButton!
    var `switch`: UISwitch!
    var stepper: UIStepper!
    var datePicker: UIDatePicker!
    var stepperLabel: UILabel!

    override func viewDidLoad() {
        textField = UITextField()
        textField.borderStyle = .roundedRect
        textField.accessibilityLabel = "Text Field"
        textField.translatesAutoresizingMaskIntoConstraints = false

        button = UIButton()
        button.setTitle("Button", for: .normal)
        button.accessibilityLabel = "Button"
        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(onButtonDidPress))
        button.addGestureRecognizer(tapGestureRecognizer)
        button.translatesAutoresizingMaskIntoConstraints = false

        slider = UISlider()
        slider.accessibilityLabel = "Slider"
        slider.maximumValue = 100
        slider.minimumValue = 0
        slider.value = 50
        slider.translatesAutoresizingMaskIntoConstraints = false

        `switch` = UISwitch()
        `switch`.accessibilityLabel = "Switch"
        `switch`.translatesAutoresizingMaskIntoConstraints = false

        stepper = UIStepper()
        stepper.accessibilityLabel = "Stepper"
        stepper.translatesAutoresizingMaskIntoConstraints = false
        stepper.addTarget(self, action: #selector(onStepperValueChanged), for: .valueChanged)

        stepperLabel = UILabel()
        stepperLabel.text = "0"
        stepperLabel.textColor = .white
        stepperLabel.font = UIFont.systemFont(ofSize: 20)
        stepperLabel.translatesAutoresizingMaskIntoConstraints = false

        datePicker = UIDatePicker()
        datePicker.accessibilityLabel = "Date Picker"
        datePicker.setValue(UIColor.white, forKey: "textColor")
        datePicker.datePickerMode = .date
        datePicker.translatesAutoresizingMaskIntoConstraints = false

        view.addSubview(textField)
        view.addSubview(button)
        view.addSubview(slider)
        view.addSubview(`switch`)
        view.addSubview(stepper)
        view.addSubview(stepperLabel)
        view.addSubview(datePicker)

        textField.topAnchor.constraint(equalTo: view.topAnchor, constant: 20).isActive = true
        textField.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true
        textField.rightAnchor.constraint(equalTo: view.rightAnchor, constant: -20).isActive = true

        textField.heightAnchor.constraint(equalToConstant: 38).isActive = true

        slider.topAnchor.constraint(equalTo: textField.bottomAnchor, constant: 20).isActive = true
        slider.leftAnchor.constraint(equalTo: textField.leftAnchor, constant: 20).isActive = true
        slider.rightAnchor.constraint(equalTo: textField.rightAnchor, constant: -20).isActive = true

        button.topAnchor.constraint(equalTo: slider.bottomAnchor).isActive = true
        button.leftAnchor.constraint(equalTo: textField.leftAnchor).isActive = true
        button.rightAnchor.constraint(equalTo: textField.rightAnchor).isActive = true

        `switch`.topAnchor.constraint(equalTo: button.bottomAnchor, constant: 20).isActive = true
        `switch`.leftAnchor.constraint(equalTo: view.leftAnchor, constant: 20).isActive = true

        stepper.topAnchor.constraint(equalTo: `switch`.bottomAnchor, constant: 20).isActive = true
        stepper.leftAnchor.constraint(equalTo: textField.leftAnchor).isActive = true
        stepperLabel.topAnchor.constraint(equalTo: stepper.topAnchor).isActive = true
        stepperLabel.rightAnchor.constraint(equalTo: textField.rightAnchor).isActive = true

        datePicker.topAnchor.constraint(equalTo: stepper.bottomAnchor, constant: 20).isActive = true

        view.setNeedsLayout()
    }

    func onButtonDidPress() {
        textField.text = "Button Pressed!"
        datePicker.setValue(UIColor.green, forKey: "textColor")
    }
    func onStepperValueChanged() {
        stepperLabel.text = String(stepper.value)
    }
}

// --------------------------------------------- //
// -------------------- TEST ------------------- //
// --------------------------------------------- //

import Foundation
import KIF
import Nimble
import UIKit
@testable import KataSuperHeroes

class SuperHeroesControlsViewControllerTests: AcceptanceTestCase {

    func testShowsEmptyCaseIfThereAreNoSuperHeroes() {
        openSuperHeroesViewController()

        tester().tapView(withAccessibilityLabel: "Button")

        tester().setValue(0, forSliderWithAccessibilityLabel: "Slider")

        for _ in (0..<10) {
            tester().tapStepper(withAccessibilityLabel: "Stepper", increment: .increment)
        }

        tester().selectDatePickerValue(["August", "18", "1988"])

        tester().clearTextFromView(withAccessibilityLabel: "Text Field")

        tester().enterText("Hello World!", intoViewWithAccessibilityLabel: "Text Field")
    }

    fileprivate func openSuperHeroesViewController() {
        let superHeroesViewController = ServiceLocator().provideSuperHeroesControlsViewController()
        let rootViewController = UINavigationController()
        rootViewController.viewControllers = [superHeroesViewController]
        present(viewController: rootViewController)
        tester().waitForAnimationsToFinish()
    }

}