@Test
public void testRemoveVip() {

	testCreateVip();
	// verify correct initial condition
	assertFalse(vip1==null);
	assertFalse(vip2==null);
	lb.removeVip(vip1.id);
	lb.removeVip(vip2.id);
	// verify correct removal
	assertFalse(lb.vips.containsKey(vip1.id));
	assertFalse(lb.vips.containsKey(vip2.id));
}