rspec controller测试

1 对于controller render/redirect的测试，一般对应以下的测试方法

render :action => :index
response.should render_template('index')

render :partial => 'post'
response.should render_template('_post')

redirect_to login_path
response.should redirect_to(login_path)
但是对于render :nothing = true来说，并没有相应的方法来测试，也无法用render_template来解决，只能是判断返回的response的内容是不是为空了。

response.should have_text(' ')
注意是 ，不是，至于为什么有个空格？我也没有仔细研究

response.body.should =~ /Listing widgets/m
response.body.should eq("")

2 对于controller with invalid params的测试，一般对应以下的测试方法
Member.any_instance.stub(:delete).and_return(false)
3 控制器中方法的调用
subject.send(:log_in,@user)


----------------------------------------实例-----------------------------
1 控制器中的 before_filter 
class MyController < ApplicationController
  before_filter :logged_in?

  def index
  end
end



describe MyController do
  describe "GET 'index'" do
    context "when not logged in"
      # you want to be sure that before_filter is executed
      it "requires authentication" do
        controller.expects :logged_in?
        get 'index'
      end
      # you don't want to spec that it will redirect you to login_path
      # because that spec belongs to #logged_in? method specs
    end
    context "when authenticated" do
      before(:each) { controller.stubs :logged_in? }
      it "renders :index template" do
        get 'index'
        should render_template(:index)
      end
      it "spec other things your action does when user is logged in"
    end
  end
end