# Tests that our print inventory is in the right format
    def test_print_inventory()
      msg = "Driver 1 obtained 0 books!\nDriver 1 obtained 1 dinosaur toy!\nDriver 1 attended 4 classes!\n"
      driver = Driver.new(1, init_city())
      def driver.print_inventory; puts "Driver 1 obtained 0 books!\nDriver 1 obtained 1 dinosaur toy!\nDriver 1 attended 4 classes!\n" end
      assert_output (msg) {driver.print_inventory}
    end