require 'spec_helper'

require 'aasm'
require 'digest'

class Order
  include AASM

  attr_reader :number

  aasm do
    state :created, initial: true, before_enter: :set_number
    state :assembled
    state :delivered

    event :assembly! do
      transitions from: :created, to: :assembled
    end

    event :deliver! do
      transitions from: :assembled, to: :delivered
    end
  end

  private

  def set_number
    @number = Digest::MD5.hexdigest(rand(1..100000).to_s)
  end
end

describe 'State machine' do
  let(:order) { Order.new }

  it 'works' do
    expect(order.created?).to be true
    expect(order.number.class).to eq(String)

    order.assembly!
    expect(order.assembled?).to be true

    order.deliver!
    expect(order.delivered?).to be true
  end
end