List<Slip> slips = new ArrayList<Slip>();
slips.add(new Slip(SlipType.kPhoneCall, new LocalDateTime(), 10));
slips.add(new Slip(SlipType.kShortMessage, new LocalDateTime(), 15));
slips.add(new Slip(SlipType.kInternet, new LocalDateTime(), 100));
data.put(UserField.kSlips, slips);
UserMonthUsage usage = new UserMonthUsage(1, data);
assertEquals(Money.get(65, 80), calculator.calculate(usage));
}