require 'test/unit'
require File.dirname(__FILE__) + '/test_helper'
require File.join(File.dirname(__FILE__), 'fixtures/card')

class ActsAsDeckTest < Test::Unit::TestCase #:nodoc:
  fixtures :random_numbers, :cards

  def initialize(arg)
    super(arg)
  end

  def setup
    @deck = Card.find :all
  end
  
  def test_randomize_card
    assert_equal @deck[0].shuffle_key, @deck[1].shuffle_key
    @deck[0].randomize_card
    @deck[1].randomize_card
    assert_not_equal @deck[0].shuffle_key, @deck[1].shuffle_key
  end

  def test_shuffle!
    old_deck = @deck.clone
    assert_equal old_deck, @deck
    @deck.shuffle!
    assert_not_equal old_deck, @deck
  end

  def test_shuffle
    @deck.sort! { |a, b| a.id <=> b.id }
    temp_deck = @deck.shuffle

    # deck should still be sorted
    @deck.length.times do | count |
      assert_equal @deck[count].id, count+1
    end
  end

  def test_draw
    new_deck = @deck.clone
    
    # draw is based on pop which pops from the end of the array to the front,
    # therefore we have to use reverse_each in the test.
    @deck.each do | card |
        new_card = new_deck.draw!
        assert_equal new_card, card
    end

    # The deck should now be empty.
    assert_raises GameDSL::Acts::Deck::EmptyDeckError do
      new_deck.draw!
    end
  end
end