@Test
	public void findBillByDateTest() throws InstanceNotFoundException{
		Household hh = null;
		try {
			hh = familyService.findHousehold(0);
		} catch (InstanceNotFoundException e) {
			fail("Household not found");
		}
		billService.createBill(hh);
		
		Calendar date = Calendar.getInstance();
		date.add(Calendar.MONTH, -1);
		
		billService.findBillByDate(hh,date );
	}