how to test observe with rspec in ruby on rails.

在测试 model时，有一个改动是observe, 我想一把测试了，可是这个observer在rspec中一直不肯执行. 但在console下的test env没有任何问题。

哥花了一天的时间来调试，终于还是没有搞定，有遇到此类的问题的朋友可以协助我一下，谢谢。

用我的垃圾英语在rails的mail list上问了一下，说要我看下面的东东

http://stackoverflow.com/questions/33048/how-would-you-test-observers-with-rspec-in-a-ruby-on-rails-application

上面主要还是推荐observer和model分开来测试，在observer中model的构建用mock.

试着写了一下，觉得还不错，记录一下。

 

测试代码

  
    

   
     
   
      1 
   
     require 
   
     '
   
     spec_helper
   
     '
   
     

   
      2 
   
     

   
      3 
   
     describe ContactInfoObserver 
   
     do
   
     

   
      4 
   
      before(:each) 
   
     do
   
     

   
      5 
   
      @phone 
   
     =
   
      
   
     "
   
     15812345678
   
     "
   
     

   
      6 
   
      @obs 
   
     =
   
      ContactInfoObserver.instance 

   
      7 
   
      end

   
      8 
   
      

   
      9 
   
      it 
   
     '
   
      should be change contact my user id when contact registered
   
     '
   
      
   
     do
   
     

   
     10 
   
      user 
   
     =
   
      mock_model(UserInfo)

   
     11 
   
      UserInfo.stub(:find_by_phone).and_return(user) 

   
     12 
   
      m 
   
     =
   
      mock_model(ContactInfo, :phone 
   
     =>
   
      @phone)

   
     13 
   
      m.should_receive(
   
     "
   
     my_user_id=
   
     "
   
     ).with(user.id)

   
     14 
   
      @obs.before_create m

   
     15 
   
      end

   
     16 
   
      

   
     17 
   
      it 
   
     '
   
      should not change contact my user id when contact unregistered
   
     '
   
      
   
     do
   
     

   
     18 
   
      UserInfo.stub(:find_by_phone).and_return(
   
     false
   
     ) 

   
     19 
   
      m 
   
     =
   
      mock_model(ContactInfo, :phone 
   
     =>
   
      @phone)

   
     20 
   
      m.should_not_receive(
   
     "
   
     my_user_id=
   
     "
   
     )

   
     21 
   
      @obs.before_create m

   
     22 
   
      end

   
     23 
   
      

   
     24 
   
     end
  
    

 

observer

  
    

   
     
   
      1 
   
     class
   
      ContactInfoObserver 
   
     <
   
      ActiveRecord::Observer

   
      2 
   
      def before_create(contact_info) 

   
      3 
   
      #contact_info.logger.error(
   
     "
   
     model 
   
     "
   
     +
   
     contact_info.inspect)

   
      4 
   
      user 
   
     =
   
      UserInfo.find_by_phone contact_info.phone

   
      5 
   
      puts 
   
     "
   
     model observer
   
     "
   
     +
   
     user.inspect

   
      6 
   
      
   
     if
   
      user

   
      7 
   
      puts 
   
     '
   
     at here
   
     '
   
     

   
      8 
   
      contact_info.my_user_id
   
     =
   
      user.id

   
      9 
   
      end

   
     10 
   
      end

   
     11 
   
     end