Stack level too Deep - Rspec

Question

I've seen tons of these questions, but none of their solutions are working for me. I have a single test like so:

describe RolesController do
  describe "#delet" do 

    context "When the user is logged in" do 
      let(:user) {FactoryGirl.create(:user)}
      let(:admin) {FactoryGirl.create(:admin)}
      let(:adminRole) {FactoryGirl.create(:adminRole)}

      it "Should allow admins to delete roles" do 
        sign_in admin
        put :destroy, :id => adminRole.id
      end
    end
  end
end

Simple, simple, simple. Yet I get the typical error:

  1) RolesController#delet When the user is logged in Should allow admins to delete roles
     Failure/Error: Unable to find matching line from backtrace
     SystemStackError:
       stack level too deep
     # /home/adam/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.0.0/lib/active_support/notifications/instrumenter.rb:23

and I'm all like ... what? Again I have read dozens of questions on this and it seems to be something with factory girl but I cannot see what the issue here would be. I have tons of other tests that instantiate factory girl based object like this with no issue.

Answer 1

Simply do not use the variable you are defining with let inside the following code block as it triggers an endless recursion.