gistfile1.rb

require "test_helper"

module Chevalet
  class ImageTest < ImageTestCase
    %w(gif jpg png).each do |format|
      test "validates a real #{format} image" do
        image(format.to_sym) do |data|
          image = Image.new(data)
          assert image.send("#{format}?")
        end
      end
    end
  end # ImageTest
end