@Test
public void testMinus() throws Exception {
MutableMoney m1 = MutableMoney.of(0, 54);
MutableMoney m2 = MutableMoney.of(1, 89);
assertEquals(MutableMoney.of(-1, 35), m1.minus(m2));
assertEquals(MutableMoney.of(-1, 79), m1.minus(0, 44));
}
