/** Two objects that are equal are required to return the same hashCode. */
@Test
public void testHashCode() {
DateAxis a1 = new DateAxis("Test");
DateAxis a2 = new DateAxis("Test");
assertTrue(a1.equals(a2));
int h1 = a1.hashCode();
int h2 = a2.hashCode();
assertEquals(h1, h2);
}
