doesnt_really_work_this_way_spec.rb

require 'rubygems'
require 'action_controller/base'

class SomeController < ActionController::Base
  def index
    render :text => "this text"
  end
end

describe SomeController do
  describe "index" do
    it "returns some text" do
      c = SomeController.new
      c.index.should == "this text"
    end
  end
end

result.txt

$ rspec spec
...
uninitialized constant ActionController::Metal (NameError)