authenticated_user do
  setup { # I can have a setup here }
 
  should 'do something' do
    # I can put shoulds here   
  end
 
 context 'nested context' do
   setup { # another setup }
 
    should 'be fun' do
      # I can use the @user instance variable anywhere
      assert_equal 'Mike', @user.name
    end
 end
end