RSpec authorization testing with raise_error not working

Question

I'm trying to test how a not logged in user behaves like this

  describe "not logged in user" do
   user_no_rights

    it "can't access action index" do
      expect(get :index).to raise_error(CanCan::AccessDenied)
    end
  end

The output when i run rspec

  Failure/Error: expect(get :index).to raise_error("CanCan::AccessDenied:You are not authorized to access this page.")
     CanCan::AccessDenied:
       You are not authorized to access this page.

So it looks like the correct execption is raised, but why is the spec not passing?

Answer 1

I've changed my spec to:

 describe "not logged in user" do
   user_no_rights

    it "can't access action index" do
      expect{get :index}.to raise_error(CanCan::AccessDenied)
    end
 end

and it works. Kudos to Thomas! :-)