RSpec。如何检查对象方法是否被调用？

Question

我正在写控制器规格：

it 'should call the method that performs the movies search' do 
    movie = Movie.new 
    movie.should_receive(:search_similar) 
    get :find_similar, {:id => '1'} 
end 

和我的控制器看起来像：

Failures: 
1) MoviesController searching by director name should call the method that performs the movies search 
Failure/Error: movie.should_receive(:search_similar) 
    (#<Movie:0xaa2a454>).search_similar(any args) 
     expected: 1 time 
     received: 0 times 
# ./spec/controllers/movies_controller_spec.rb:33:in `block (3 levels) in <top (required)>' 

我看来：运行RSpec的我得到以下后

def find_similar 
@movies = Movie.find(params[:id]).search_similar 
end 

理解和接受，因为在我的控制器代码中，我调用了Class（Movie）方法，并且我没有看到任何方式将“find_similar”与对象创建的连接C。

所以问题是 - >什么方法来检查方法是否在对象上调用，在spec中创建？

Answer 1

it 'should call the method that performs the movies search' do 
    movie = Movie.new 
    movie.should_receive(:search_similar) 
    Movie.should_receive(:find).and_return(movie) 
    get :find_similar, {:id => '1'} 
end 

_{对于什么是值得的，我完全反对这些存根，所有的东西测试，他们只是使代码更改更难，实际上只是测试代码结构。}

Answer 2

起初，你的电影还没有持久。

在第二，而不是事实，这将有ID 1

那么试试这个

it 'should call the method that performs the movies search' do 
    movie = Movie.create 
    movie.should_receive(:search_similar) 
    get :find_similar, {:id => movie.id} 
end