### Question:
MoneyBag implements IMoney { public IMoney add(IMoney m) { return m.addMoneyBag(this); }  IMoney add(IMoney m); IMoney addMoney(Money m); IMoney addMoneyBag(MoneyBag s); boolean equals(Object anObject); int hashCode(); boolean isZero(); IMoney multiply(int factor); IMoney negate(); IMoney subtract(IMoney m); String toString(); void appendTo(MoneyBag m);  }### Answer:
@Test public void testSimpleAdd() { Money expected = new Money(26, "CHF"); assertEquals(expected, f12CHF.add(f14CHF)); }