@Test
public void testGenerateScheduleInterestOnlyMonthly() {
AmortizationAttributes amAttrs = generateAmortizationAttributesObjectTemplate();
amAttrs.setLoanAmount(ofUSD(10000));
amAttrs.setInterestRateAsPercent(10.);
amAttrs.setInterestOnly(true);
amAttrs.setPaymentFrequency(TimePeriod.Monthly.getPeriodsPerYear());
int termInMonths = 12;
amAttrs.setTermInMonths(termInMonths);
amAttrs.setAdjustmentDate(LocalDate.of(2016, Month.JANUARY, 1));
amAttrs.setRegularPayment(ofUSD(0));
List<ScheduledPayment> schedule = AmortizationCalculator.generateSchedule(amAttrs);
assertEquals("Interest only schedule term in months", termInMonths, schedule.size());
MonetaryAmount expectedInterest = ofUSD(83.34);
MonetaryAmount expectedPrincipal = ofUSD(0);
LocalDate expectedDate = amAttrs.getAdjustmentDate();
int index = 0;
for (ScheduledPayment payment : schedule) {
expectedDate = expectedDate.plusMonths(1L);
assertEquals("Interest only schedule payment number", ++index, payment.getPaymentNumber());
assertEquals("Interest only schedule payment date", expectedDate, payment.getPaymentDate());
assertEquals(
"Interest only schedule payment interest", expectedInterest, payment.getInterest());
assertEquals(
"Interest only schedule payment principal", expectedPrincipal, payment.getPrincipal());
assertEquals(
"Interest only schedule payment total payment", expectedInterest, payment.getPayment());
assertEquals(
"Interest only schedule payment loan principal", ofUSD(10000), payment.getBalance());
}
}
