intersection_rect_question_spec.rb

require 'spec_helper'
require 'extreme_startup/question_factory'
require 'extreme_startup/player'

module ExtremeStartup
  describe RectangleIntersectionQuestion do
    let(:question) { RectangleIntersectionQuestion.new(Player.new) }

    it "converts to a string" do
      question.as_text.should =~ /give the intersection of those rectangles \(x0,y0,width,height\): \(\d+,\d+,\d+,\d+\) x \(\d+,\d+,\d+,\d+\)/i
    end

    context "when the numbers and known" do
      let(:question) { RectangleIntersectionQuestion.new(Player.new, 1,1,10,10, 5,5,20,20) }

      it "converts to the right string" do
        question.as_text.should =~ /give the intersection of those rectangles \(x0,y0,width,height\): \(1,1,10,10\) x \(5,5,20,20\)/i
      end

      it "identifies a correct answer" do
        question.answered_correctly?("( 5, 5, 6, 6 )").should be_true
      end

      it "identifies an incorrect answer" do
        question.answered_correctly?("(5,5,6,20)").should be_false
      end
    end
    context "when the rectangles does not intersect" do
      let(:question) { RectangleIntersectionQuestion.new(Player.new, 1,1,2,2, 5,5,2,2) }

      it "identifies empty answer as correct" do
        question.answered_correctly?("").should be_true
      end
    end
  end
end