Rspec any_instance should_receive應該收到以下消息，但沒有

Question

我遇到了RSpec的腳手架測試問題，其中any_instance.should_receive正在拋出一個錯誤：失敗/錯誤：無法從回溯中找到匹配的線 正確一個實例應該已經收到以下消息（一個或多個），但沒有：

的update_attributes

Rspec的代碼，用FactoryGirl和strong_parameters：

describe "PUT update" do 
    describe "with valid params" do 
    it "updates the requested acquisition" do 
     puts "starting updates the requested acquisition" 
     acquisition = create(:acquisition) 
     # Assuming there are no other acquisitions in the database, this 
     # specifies that the Acquisition created on the previous line 
     # receives the :update_attributes message with whatever params are 
     # submitted in the request. 
     Acquisition.any_instance.should_receive(:update_attributes).with(:acquisition => {:person_id => '10'}) 
     puts "before the put " 
     put :update, :id => acquisition.id, :acquisition => { :person_id => '10'} 
     puts "ending the updates the requested acquisition" 
    end 
    end 
end 

控制器代碼：

def update 
    @acquisition = Acquisition.find(params[:id]) 
    puts "acquisition is #{@acquisition.inspect}" 
    respond_to do |format| 
     if @acquisition.update_attributes!(acquisition_params) 
     puts "updated the thing! #{@acquisition.inspect}" 
     format.html { redirect_to(@acquisition, :notice => 'Acquisition was successfully updated.') } 
     format.xml { head :ok } 
     else 
     puts "failed to update the thing!" 
     format.html { render :action => "edit" } 
     format.xml { render :xml => @acquisition.errors, :status => :unprocessable_entity } 
     end 
    end 
    end 

個

測試輸出：

starting updates the requested acquisition 
before the put 
acquisition is #<Acquisition id: 502, sample_id: 7, person_id: 7, method: nil> 
params is acqusition_params is {"person_id"=>"10"} 
updated the thing! #<Acquisition id: 502, sample_id: 7, person_id: 10, method: nil> 
ending the updates the requested acquisition 
F 

1) AcquisitionsController PUT update with valid params updates the requested acquisition 
Failure/Error: Unable to find matching line from backtrace 
    Exactly one instance should have received the following message(s) but didn't: update_attributes 

考慮到我打印出在我的控制器更新的對象，它是正確的，爲什麼測試失敗？

謝謝！

Answer 1

這可能是在你貼一個錯字，但如果它不是，如果接收update_attributes!測試應該測試，不update_attributes

Acquisition.any_instance.should_receive(:update_attributes!)