* hashCode() method testing. Tests that hash code is just this integer
* attribute's integer value.
*/
public final void testHashCode2() {
is1 = new Copies(5);
is2 = new NumberUp(5);
assertTrue(is1.hashCode() == 5);
assertTrue(is2.hashCode() == 5);
assertTrue(is1.hashCode() == is2.hashCode());
}