yukas

require "spec_helper"

describe OrderReport do
  subject { Traver.create(:order_report) }
  
  describe "#update_order_report" do
    before do
      calculator = instance_double("OrderCalculator", total: 1.0, fee: 0.01)
      expect(subject).to recieve(:calculator).and_return(calculator)
    end

yukas

require "spec_helper"

describe OrderCalculator do
  let(:order) {
    Traver.create(order: {
      items: [{ price: 1.0 }, { price: 2.0 }]
    })
  }
  
  subject { OrderCalculator.new(order) }

yukas

class OrderReport < ActiveRecord::Base
  belongs_to :order
  
  def update_order_report
    this.total = calculator.total
    this.fee   = calculator.fee
    
    save!
  end
  

yukas

class ReportsController < ApplicationController
  def index
    raise "Can't operate without event date" if params[:event_date_id].blank?
    
    # ...
  end
end

yukas

# order.rb
class Order < ActiveRecord::Base
  delegate :email, to: :real_user, prefix: :user
  
  belogns_to :user
  
  def real_user
    user || AnonymousUser.new
  end
end

yukas

class OrderCanceller
  attr_reader :order

  def initialize(order)
    @order = order
  end

  def send_notification
    OrderMailer.cancel_emal(order).deliver
  end

yukas

class OrderCanceller
  attr_reader :order

  def initialize(order)
    @order = order
  end
  
  def cancel_order
    change_status
    log_cancellation

yukas

import AVFoundation

class BarcodeCapturer: NSObject, AVCaptureMetadataOutputObjectsDelegate {
  var bounds: CGRect
  var delegate: BarcodeCapturerDelegate
  
  var previewLayer: AVCaptureVideoPreviewLayer!

  private var captureSession: AVCaptureSession!
  private var previousScannedValue: String?

yukas

import AVFoundation
import UIKit

class ScanViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate {
  var captureSession: AVCaptureSession!
  var previewLayer: AVCaptureVideoPreviewLayer!
  
  var previousScannedValue: String?
  
  override func viewDidLoad() {

yukas

import AVFoundation
import UIKit

class ScanViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate {
  var captureSession: AVCaptureSession!
  var previewLayer: AVCaptureVideoPreviewLayer!
  
  var previousScannedValue: String?
  
  override func viewDidLoad() {