未定义的方法`have_content'使用黄瓜/水豚/ sinatra

我想验证Sinatra应用程序的初始页面的开始，但我努力获得测试框架的工作。谷歌搜索建议我添加cucumber/rails/rspec或类似的，但我真的需要在不使用Rails时添加与轨道相关的库吗？未定义的方法`have_content'使用黄瓜/水豚/ sinatra

这里是我的Gemfile

source :rubygems 

gem 'sinatra', '1.3.1' 
gem 'json', '1.6.3' 


group :test do 
    gem 'rspec', '2.7.0' 
    gem 'cucumber', '1.1.3' 
    gem 'capybara', '1.1.2' 
    gem 'rack-test', '0.6.1' 
end

和我的步骤：

Given /^a room needs to be surveyed$/ do 

end 

When /^I start a survey$/ do 
    survey_tool.start_a_survey 
end 

Then /^the system will prompt me for a survey summary$/ do 
    survey_tool.validate_start_a_survey_page 
end

和我的世界扩展

module KnowsTheUserInterface 
    class UserInterface 
    include Capybara::DSL 

    def start_a_survey() 
     visit '/start_a_survey' 
    end 

    def validate_start_a_survey_page() 
     page.should have_content('Welcome') 
    end 
    end 
    def survey_tool 
    @survey_tool ||=UserInterface.new 
    end 

end 

World(KnowsTheUserInterface)

和我的ENV

require File.join(File.dirname(__FILE__), '..', '..', 'lib', 'survey_tool') 

require 'capybara/cucumber' 
require 'capybara/rspec' 
Capybara.app = Sinatra::Application 
Sinatra::Application.set :environment, :test

我收到的错误是

方案：启动调查＃功能/ start_a_survey.feature：4 一个房间需要被调查＃特性/ step_definitions/start_a_survey_steps.rb：1 当我开始调查＃特点/step_definitions/start_a_survey_steps.rb:5 然后，系统会提示我调查摘要＃特征/ step_definitions/start_a_survey_steps.rb：9 未定义的方法have_content' for #<KnowsTheUserInterface::UserInterface:0x007f910465fc38> (NoMethodError) ./features/support/world_extensions.rb:10:in validate_start_a_survey_page” ./features/step_definitions/start_a_survey_steps.rb:10:in /^the system will prompt me for a survey summary$/' features/start_a_survey.feature:7:in然后系统会提示我进行调查总结'

来源

2012-02-10 Paul Williams