Testing with rspec .consider_all_requests_local = false

I'm using in my application_controller : .consider_all_requests_local like

  unless Rails.application.config.consider_all_requests_local    rescue_from ActionController::InvalidCrossOriginRequest, :with => :render_404  end

This return 404 if ActionController::InvalidCrossOriginRequest is raised. In local environnement it's not raised, it's good for debugging. For this part it's working. But I would like to test it with rspec.

I've tried something like

describe 'ActionController::InvalidCrossOriginRequest render 404' do    before { Rails.application.config.consider_all_requests_local = false }    controller do      def index        raise ActionController::InvalidCrossOriginRequest      end    end    subject { xhr :get, :index, format: :js }    its(:status) { is_expected.to eq 404 }end

Two things. I probably not raise in the proper way. Locally the error occurs when mywebsite.com/editor/fckeditor.js is called. Didn't found a way to call a specific url.

Second problem, the before doesn't change the Rails.application.config.consider_all_requests_local state.

I get :

1) ApplicationController ActionController::InvalidCrossOriginRequest render 404 status     Failure/Error: raise ActionController::InvalidCrossOriginRequest     ActionController::InvalidCrossOriginRequest:       ActionController::InvalidCrossOriginRequest