public void BagNegate()
{
// {[12 CHF][7 USD]} negate == {[-12 CHF][-7 USD]}
Money[] bag= { new Money(-12, "CHF"), new Money(-7, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, fMB1.Negate());
}
public void BagSubtract()
{
// {[12 CHF][7 USD]} - {[14 CHF][21 USD] == {[-2 CHF][-14 USD]}
Money[] bag= { new Money(-2, "CHF"), new Money(-14, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, fMB1.Subtract(fMB2));
}
public void BagSimpleAdd()
{
// {[12 CHF][7 USD]} + [14 CHF] == {[26 CHF][7 USD]}
Money[] bag= { new Money(26, "CHF"), new Money(7, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, fMB1.Add(f14CHF));
}
public void BagMultiply()
{
// {[12 CHF][7 USD]} *2 == {[24 CHF][14 USD]}
Money[] bag = { new Money(24, "CHF"), new Money(14, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, fMB1.Multiply(2));
Assert.AreEqual(fMB1, fMB1.Multiply(1));
Assert.IsTrue(fMB1.Multiply(0).IsZero);
}
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);
}
public void MoneyBagEquals()
{
//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(fMB1.Equals(null));
Assert.IsTrue(fMB1.Equals( fMB1 ));
MoneyBag equal= new MoneyBag(new Money(12, "CHF"), new Money(7, "USD"));
Assert.IsTrue(fMB1.Equals(equal));
Assert.IsTrue(!fMB1.Equals(f12CHF));
Assert.IsTrue(!f12CHF.Equals(fMB1));
Assert.IsTrue(!fMB1.Equals(fMB2));
}
public void SimpleBagAdd()
{
// [14 CHF] + {[12 CHF][7 USD]} == {[26 CHF][7 USD]}
Money[] bag= { new Money(26, "CHF"), new Money(7, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, f14CHF.Add(fMB1));
}
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 Normalize()
{
Money[] bag= { new Money(26, "CHF"), new Money(28, "CHF"), new Money(6, "CHF") };
MoneyBag moneyBag= new MoneyBag(bag);
Money[] expected = { new Money(60, "CHF") };
// note: expected is still a MoneyBag
MoneyBag expectedBag= new MoneyBag(expected);
Assert.AreEqual(expectedBag, moneyBag);
}
public IMoney AddMoneyBag(MoneyBag s)
{
return (new MoneyBag(s, this)).Simplify();
}
public void BagSumAdd()
{
// {[12 CHF][7 USD]} + {[14 CHF][21 USD]} == {[26 CHF][28 USD]}
Money[] bag= { new Money(26, "CHF"), new Money(28, "USD") };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, fMB1.Add(fMB2));
}
public void MixedSimpleAdd()
{
// [12 CHF] + [7 USD] == {[12 CHF][7 USD]}
Money[] bag= { f12CHF, f7USD };
MoneyBag expected= new MoneyBag(bag);
Assert.AreEqual(expected, f12CHF.Add(f7USD));
}
public MoneyBag(MoneyBag m1, MoneyBag m2)
{
AppendBag(m1);
AppendBag(m2);
}
public MoneyBag(Money m, MoneyBag bag)
{
AppendMoney(m);
AppendBag(bag);
}
private void AppendBag(MoneyBag aBag)
{
foreach (Money m in aBag.fMonies)
AppendMoney(m);
}
public IMoney Negate()
{
MoneyBag result= new MoneyBag();
foreach (Money m in fMonies)
{
result.AppendMoney((Money)m.Negate());
}
return result;
}
public IMoney Multiply(int factor)
{
MoneyBag result= new MoneyBag();
if (factor != 0)
{
foreach (Money m in fMonies)
{
result.AppendMoney((Money)m.Multiply(factor));
}
}
return result;
}
public IMoney AddMoneyBag(MoneyBag s)
{
return s.AddMoney(this);
}
public void MoneyBagHash()
{
MoneyBag equal= new MoneyBag(new Money(12, "CHF"), new Money(7, "USD"));
Assert.AreEqual(fMB1.GetHashCode(), equal.GetHashCode());
}
