@Test
public void testCreate() throws Exception {
Bill bill = new Bill(1, true, 50);
Bill newBill = dao.create(bill);
assertTrue(newBill.getOrderId() == bill.getOrderId());
dao.delete(newBill.getId());
}
@Test
public void testDelete() throws Exception {
Bill bill = new Bill(1, true, 50);
Collection<Bill> test1 = dao.get();
Bill newBill = dao.create(bill);
Collection<Bill> test2 = dao.get();
dao.delete(newBill.getId());
Collection<Bill> test3 = dao.get();
assertTrue(test1.size() == test3.size());
assertTrue(test1.size() + 1 == test2.size());
}