command /menu:
    trigger:
        open chest with 3 row named "テストメニュー" to player
        format slot 0 of player with stone named "&aてすと" with lore "&eてすと" to be unstealable
        format slot 8 of player with oak door named "&a閉じる" with lore "&eクリックでメニューを閉じます" to be unstealable

on inventory click:
    if name of player's current inventory contains "テストメニュー":
        cancel event
        wait a tick
        if clicked slot is 0:
            send "&aクリックしました" to player
        if clicked slot is 8:
            close player's inventory
            send "&aメニューを閉じました" to player