house_oop_example.rb

class House
  attr_accessor :rooms, :furnished, :residents, :address, :price

  def initialize(args={})
    @rooms = args.fetch(:rooms, [])
    @furnished = args.fetch(:furnished, true)
    # THIS FAILS!  REASON TO USE .fetch
    # @furnished = args[:furnished] || true
  end

end


describe House do
  it '#initialize sets the right default/nil arguments' do
    house = House.new
    expect(house.rooms).to be_empty
    expect(house.furnished).to eq true

    empty_hash = {}
    expect{ empty_hash.fetch(:foo) }.to raise_error(KeyError)
    # THIS DOES NOT WORK!  IT RAISES ERROR BEFORE WE LOOK FOR IT
    # expect(empty_hash.fetch(:foo)).to raise_error(KeyError)

  end

  it '#initialize sets the right given arguments' do
    house = House.new({
      rooms: ['kitchen', 'bathroom', 'bedroom 1'],
      furnished: false,
      residents: 3,
      address: '1024 Maple Lane',
      price: 250000
    })
    puts "house is #{house.inspect}"
    expect(house.rooms).to eq ['kitchen', 'bathroom', 'bedroom 1']
    expect(house.furnished).to eq false
  end
end