Practice Move ProgrammingFrom the Move Book

module suilings::coin_balance;

use sui::coin::{Self, Coin};
use sui::sui::SUI;

/// Returns the balance of a SUI coin
public fun get_balance(coin: &Coin<SUI>): u64 {
    coin.value()
}

#[test]
fun test_balance() {
    let coin = coin::mint_for_testing<SUI>(1000);
    assert!(get_balance(&coin) == 1000);
    coin::burn_for_testing(coin);
}