stub cookies for unit test

stub_cookies.rb

class StubCookies < Hash
  def [](name)
    super(name.to_s)
  end

  def []=(key, options)
    if options.is_a?(Hash)
      options.symbolize_keys!
    else
      options = { :value => options }
    end
    super(key.to_s, options[:value])
   end

  def delete(key,opts)
    super(key)
  end

  def permanent
    self
  end
end