module NavigationHelpers
  def path_to(page_name)
    case page_name

    when /the sign up page/i
      sign_up_path
    when /the sign in page/i
      sign_in_path
    when /the password reset request page/i
      new_password_path
    when /the home ?page/i
      root_path

    # Add more page name => path mappings here

    else
      raise "Can't find mapping from \"#{page_name}\" to a path."
    end
  end
end

World(NavigationHelpers)