RSpec：测试rescue_from

Question

我如何测试rescue_from是RSpec？我想确保如果出现其中一个例外情况，控制器正确设置闪存并执行重定向。有没有办法模拟异常？

rescue_from PageAccessDenied do 
    flash[:alert] = "You do not have the necessary roles to access this page" 
    redirect_to root_url 
    end 

    rescue_from CanCan::AccessDenied do |exception| 
    flash[:alert] = exception.message 
    redirect_to root_url 
    end 

Answer 1

假设你有一个authorize!方法引发异常，你应该能够做这样的事情：

describe "rescue_from exceptions" do 
    it "rescues from PageAccessDenied" do 
     controller.stub(:authorize!) { raise PageAccessDenied } 
     get :index 
     response.should redirect_to("/") 
     flash[:alert].should == "You do not have the necessary roles to access this page" 
    end 
    end