Cucumber 关于路径的definition
I go to the edit movie page for "Alien"
主要为了能够通用

When /^(?:|I )go to (.+)$/ do |page_name|  visit path_to(page_name)end  def path_to(page_name)    case page_name    when /^the home\s?page$/      '/'    when /^the (.*)\s?page for (.*)\s?$/      page_name.scan /^the (.*)\s?page for "(.*)"$/      path_components = $1.split(/\s+/)      page_name =~ /^the (.*)\s?page for "(.*)"$/      params = $2        debugger      self.send(path_components.push('path').join('_').to_sym, Movie.find_by_title(params))    # Add more mappings here.    # Here is an example that pulls values out of the Regexp:    #    #   when /^(.*)'s profile page$/i    #     user_profile_path(User.find_by_login($1))    else      begin        page_name =~ /^the (.*) page/        path_components = $1.split(/\s+/)        self.send(path_components.push('path').join('_').to_sym)      rescue NoMethodError, ArgumentError        raise "Can't find mapping from \"#{page_name}\" to a path.\n" +          "Now, go and add a mapping in #{__FILE__}"      end    end  end