@Test
public void testZero() {

    final Vector3f target = new Vector3f(1.0f, 5.0f, 9.0f);
    final Vector3f retval = target.zero();
    assertEquals(target, retval);
    assertNotNull(retval);
    assertEquals(0.0f, retval.x, 0.0f);
    assertEquals(0.0f, retval.y, 0.0f);
    assertEquals(0.0f, retval.z, 0.0f);
}