My action.rb

  def index
    @assets = current_account.assets.paginate :page => params[:page], :per_page => 10
  end

# How to spec this???
before(:each) do
  @account = Account.new
  @assets = [Asset.new(:account => @account)]
end
it "should paginate the assets"
  @controller.should_receive(:current_account).and_return(@account)
  @account.should_receive(:assets).and_return(@assets)
  @assets.should_receive(:paginate)
end

traditional.rb

# controller action ..

def index
  @tasks = Task.all
end

# spec ....
describe :get => :index do

  expects :find, :on => Task, :with => :all, :returns => mock_task
  should_assign_to :tasks, :with => mock_task
end