Question

我想要做的就是规范视图的单行辅助方法应该如何表现，但我不确定如果我在工作的话，我应该创建什么样的模拟对象（如果有的话）轨。

以下是events_helper.rb的代码：

module EventsHelper

  def filter_check_button_path
    params[:filter].blank? ? '/images/buttons/bt_search_for_events.gif' : '/images/buttons/bt_refine_this_search.gif'
  end
end

这是我的规范代码，在events_helper_spec.rb中：

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

describe EventsHelper do

  #Delete this example and add some real ones or delete this file
  it "should be included in the object returned by #helper" do
    included_modules = (class << helper; self; end).send :included_modules
    included_modules.should include(EventsHelper)
  end

  it "should return the 'refine image search' button if a search has been run" do

  # mock up params hash
    params = {}
    params[:filter] = true

   # create an instance of the class that should include EventsHelper by default, as the first test has verified (I think)
    @event = Event.new

  # call method to check output
    @event.filter_check_button_path.should be('/images/buttons/bt_search_for_events.gif')
  end

end

当我查看这里的文档 - http://rspec.info/rails/writing/views.html时，我对“模板”对象的来源感到困惑。

我也试过看这里，我认为这会指向正确的方向，但唉，没有骰子。 http://jakescruggs.blogspot.com/2007/03/mockingstubbing-partials-and-helper.html

我在这里做错了什么？

谢谢，

克里斯

Answer 1

你没有在那个规范中做任何事情，只是设置一个存根，所以它会通过，但没有测试任何东西。

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

describe EventsHelper do
 it "should return the 'refine image search' button if a search has been run" do
  # mock up params hash
  params = {:filter => true}

  helper.stub!(:params).and_return(params)
  helper.filter_check_button_path.should eql('/images/buttons/bt_search_for_events.gif')
 end
end

Answer 2

我在没有spec_helper（Ruby 1.9）

的情况下运行我的测试

require_relative '../../app/helpers/users_helper'

describe 'UsersHelper' do 
  include UsersHelper

  ...
end

Answer 3

啊，

我在rspec邮件列表上问了这个问题，一个灵魂（感谢Scott！）向我解释说有一个方便的帮助对象，你应该使用它，如下：

Rails有自己的辅助函数 params = {：filter =＆gt;真正} helper.stub！（：PARAMS）.and_return（PARAMS）

我现在更新了代码：

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

describe EventsHelper do

  #Delete this example and add some real ones or delete this file
  it "should be included in the object returned by #helper" do
    included_modules = (class << helper; self; end).send :included_modules
    included_modules.should include(EventsHelper)
  end

  it "should return the 'refine image search' button if a search has been run" do

  # mock up params hash
    params = {}
    params[:filter] = true

    helper.stub!(:filter_check_button_path).and_return('/images/buttons/bt_search_for_events.gif')
  end

end

它正在发挥作用。好哇！

我对这个rspec助手测试做错了什么？

3 个答案: