@Test
public void testHasSameCurrency() {

    final Money m1 = new Money(100, "pds");
    final Money m2 = new Money(200, "pds");
    final Money m3 = new Money(200, "usd");
    assertTrue(m1.hasSameCurrency(m2));
    assertFalse(m1.hasSameCurrency(m3));
}