public MoneyBag(Money[] bag)
{
for (int i= 0; i < bag.Length; i++) {
if (!bag[i].IsZero)
AppendMoney(bag[i]);
}
}
protected void SetUp()
{
f12CHF= new Money(12, "CHF");
f14CHF= new Money(14, "CHF");
f7USD= new Money( 7, "USD");
f21USD= new Money(21, "USD");
fMB1= new MoneyBag(f12CHF, f7USD);
fMB2= new MoneyBag(f14CHF, f21USD);
}
private void AppendMoney(Money aMoney) {
IMoney old= FindMoney(aMoney.Currency);
if (old == null) {
fMonies.Add(aMoney);
return;
}
fMonies.Remove(old);
IMoney sum= old.Add(aMoney);
if (sum.IsZero)
return;
fMonies.Add(sum);
}
public void SimpleNegate()
{
// [14 CHF] negate == [-14 CHF]
Money expected= new Money(-14, "CHF");
Assert.AreEqual(expected, f14CHF.Negate());
}
public void SimpleMultiply()
{
// [14 CHF] *2 == [28 CHF]
Money expected= new Money(28, "CHF");
Assert.AreEqual(expected, f14CHF.Multiply(2));
}
public void SimpleAdd()
{
// [12 CHF] + [14 CHF] == [26 CHF]
Money expected= new Money(26, "CHF");
Assert.AreEqual(expected, f12CHF.Add(f14CHF));
}
public void Normalize4()
{
// [12 CHF] - {[12 CHF][3 USD]} == [-3 USD]
Money[] s1 = { new Money(12, "CHF"), new Money(3, "USD") };
MoneyBag ms1= new MoneyBag(s1);
Money expected= new Money(-3, "USD");
Assert.AreEqual(expected, f12CHF.Subtract(ms1));
}
public void Normalize3()
{
// {[12 CHF][7 USD]} - {[12 CHF][3 USD]} == [4 USD]
Money[] s1 = { new Money(12, "CHF"), new Money(3, "USD") };
MoneyBag ms1= new MoneyBag(s1);
Money expected= new Money(4, "USD");
Assert.AreEqual(expected, fMB1.Subtract(ms1));
}
public void MoneyHash()
{
Assert.IsFalse(f12CHF.Equals(null));
Money equal= new Money(12, "CHF");
Assert.AreEqual(f12CHF.GetHashCode(), equal.GetHashCode());
}
public void MoneyEquals()
{
//NOTE: Normally we use Assert.AreEqual to test whether two
// objects are equal. But here we are testing the MoneyBag.Equals()
// method itself, so using AreEqual would not serve the purpose.
Assert.IsFalse(f12CHF.Equals(null));
Money equalMoney= new Money(12, "CHF");
Assert.IsTrue(f12CHF.Equals( f12CHF ));
Assert.IsTrue(f12CHF.Equals( equalMoney ));
Assert.IsFalse(f12CHF.Equals(f14CHF));
}
public MoneyBag(Money m, MoneyBag bag)
{
AppendMoney(m);
AppendBag(bag);
}
public MoneyBag(Money m1, Money m2)
{
AppendMoney(m1);
AppendMoney(m2);
}
private bool Contains(Money aMoney)
{
Money m= FindMoney(aMoney.Currency);
return m.Amount == aMoney.Amount;
}
public IMoney AddMoney(Money m)
{
return (new MoneyBag(m, this)).Simplify();
}
public void SimpleSubtract()
{
// [14 CHF] - [12 CHF] == [2 CHF]
Money expected= new Money(2, "CHF");
Assert.AreEqual(expected, f14CHF.Subtract(f12CHF));
}
public IMoney AddMoney(Money m)
{
if (m.Currency.Equals(Currency) )
return new Money(Amount+m.Amount, Currency);
return new MoneyBag(this, m);
}
public void Normalize2()
{
// {[12 CHF][7 USD]} - [12 CHF] == [7 USD]
Money expected= new Money(7, "USD");
Assert.AreEqual(expected, fMB1.Subtract(f12CHF));
}