@Test(expected = BillNotFoundException.class)
	public void findBillsNotExistByHouseholdTest()
			throws BillNotFoundException {
		Household hh = null;
		try {
			hh = familyService.findHousehold(0);
		} catch (InstanceNotFoundException e) {
			fail("Household not found");
		}
		billService.findBillsByHousehold(hh);
	}