public void TestCurrencyAmount()
{
// test to string
CurrencyAmount amount = new CurrencyAmount(123.45);
Assert.AreEqual("123.45", amount.ToString());
// test parse
amount = CurrencyAmount.Parse("123.45");
Assert.AreEqual("123.45", amount.ToString());
// test add
CurrencyAmount amount2 = new CurrencyAmount(543.21);
amount = new CurrencyAmount(123.45);
Assert.AreEqual("666.66", CurrencyAmount.Add(amount, amount2).ToString());
amount.AddTo(amount2);
Assert.AreEqual("666.66", amount.ToString());
// test minus
amount2 = new CurrencyAmount(543.21);
amount = new CurrencyAmount(123.45);
Assert.AreEqual("-419.76", CurrencyAmount.Minus(amount, amount2).ToString());
Assert.AreEqual("419.76", CurrencyAmount.Minus(amount2, amount).ToString());
Assert.AreEqual("0.00", CurrencyAmount.Minus(amount2, amount2).ToString());
// is zero
Assert.AreEqual(true, CurrencyAmount.Minus(amount2, amount2).IsZero());
}
public bool Withdraw(Currency currency, decimal amount)
{
if (amount < 0 || Currency.IsNullOrEmpty(currency))
{
return(false);
}
lock (syncLock)
{
CurrencyAmount currencyAmount = null;
if (wallet.TryGetValue(currency, out currencyAmount))
{
currencyAmount.Add(-amount);
}
else
{
currencyAmount = new CurrencyAmount(currency, -amount);
wallet[currency] = currencyAmount;
UICollection?.Add(currencyAmount);
}
return(true);
}
}
