module Matchers
  class Pixel

    def initialize(type, attrs)
      @type, @attrs = type, attrs
    end

    def matches?(actual)
      tag = Nokogiri::XML(actual).children.first
      (tag.name == @type) and @attrs.all? do |element|
        k,v = *element
        tag.attributes[k.to_s].value == v.to_s
      end
    end

    def failure_message
      "DOESN'T WORK"
    end

    def negative_failure_message
      "DOESN'T WORK"
    end
  end

  def match_pixel_tag(type, attrs)
    Pixel.new(type, attrs)
  end
end