danielCarlosCE

protocol CodeReader {
  func startReading(completion: @escaping (String) -> Void)
  func stopReading()
  var videoPreview: CALayer {get}
}

danielCarlosCE

override init() {
  super.init()

  //Make sure the device can handle video
  guard let videoDevice = AVCaptureDevice.default(for: .video),
        let deviceInput = try? AVCaptureDeviceInput(device: videoDevice) else {
      return
  }
  
  //session

danielCarlosCE

extension AVCodeReader: AVCaptureMetadataOutputObjectsDelegate {
    func metadataOutput(_ captureOutput: AVCaptureMetadataOutput,
                        didOutput metadataObjects: [AVMetadataObject],
                        from connection: AVCaptureConnection) {
        guard let readableCode = metadataObjects.first as? AVMetadataMachineReadableCodeObject,
              let code = readableCode.stringValue else {
             return
        }

        //Vibrate the phone

danielCarlosCE

extension AVCodeReader: CodeReader {
    func startReading(completion: @escaping (String) -> Void) {
        self.didRead = completion
        captureSession?.startRunning()
    }
    func stopReading() {
        captureSession?.stopRunning()
    }
}

danielCarlosCE

class ReaderViewController: UIViewController {

    @IBOutlet weak var videoPreview: UIView!
    private var videoLayer: CALayer!
    
    var codeReader: CodeReader!

    override func viewDidLoad() {
        videoLayer = codeReader.videoPreview
        videoPreview.layer.addSublayer(videoLayer)

danielCarlosCE

override func setUp() {
    super.setUp()
    let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
    readerVC = mainStoryboard.instantiateViewController(withIdentifier: "ReaderViewController") as! ReaderViewController

    readerVC.dataSource = MockDataSource()
    readerVC.codeReader = mockReader
    
    //force the life cycle to be called
    let window = UIApplication.shared.delegate!.window!

danielCarlosCE

    private func isCodeInLimitBounds(codeReadable: AVMetadataMachineReadableCodeObject) -> Bool {

        if  let videoLayer = previewLayer as? AVCaptureVideoPreviewLayer,
            let transformedObj = videoLayer.transformedMetadataObject(for: codeReadable),
            let limitBounds = limitBounds {
            return limitBounds.contains(transformedObj.bounds)
        }
        //ignore 'failure' above
        return true
    }

danielCarlosCE

enum Result<T> {
    case success(T)
    case failure(Error)
}

protocol PlacePicker {
    func pick(result: @escaping (Result<Place>) -> Void)
}

protocol Place {

danielCarlosCE

func testPrepareForSegueDoesSetDestination() {
    let destination = storyBoard.instantiateViewController(withIdentifier: "InputVC") as! ViewController2
    let segue = UIStoryboardSegue(identifier: "addExpense", source: sut, destination: destination)

    sut.prepare(for: segue, sender: nil)

    XCTAssertNotNil(destination.completion)
    XCTAssertEqual(destination.type, .expense)
}

danielCarlosCE

import Foundation

/// 9 radom numbers followed by two verifying digits
var randomValidCpf:  String {
    var cpf = (1...11).map { _ in Int(arc4random_uniform(9)) }
    
    cpf[9] = calcVerifyingDigit(originalValue: cpf, weights: (2...10).map{$0}.reversed())
    
    cpf[10] = calcVerifyingDigit(originalValue: cpf, weights: (2...11).map{$0}.reversed())