### Question:
Money implements IMoney { public IMoney add(IMoney m) { return m.addMoney(this); } Money(int amount, String currency); IMoney add(IMoney m); IMoney addMoney(Money m); IMoney addMoneyBag(MoneyBag s); int amount(); String currency(); 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 testAdd() throws InterruptedException { Money tenEuro = new Money(10, "EURO"); assertEquals(10, tenEuro.amount()); assertEquals("EURO", tenEuro.currency()); System.out.println("Tests taking too long? Try Clover's test optimization."); Thread.sleep(1000); }