FINERACT-2081: Loan Unpaid Payable Interest fix to include amount paid

fineract-loan/src/main/java/org/apache/fineract/portfolio/loanaccount/data/LoanSummaryData.java

@@ -26,6 +26,7 @@ import lombok.Builder;
 import lombok.Data;
 import lombok.experimental.Accessors;
 import org.apache.fineract.infrastructure.core.service.DateUtils;
+import org.apache.fineract.infrastructure.core.service.MathUtil;
 import org.apache.fineract.organisation.monetary.data.CurrencyData;
 import org.apache.fineract.organisation.monetary.domain.Money;
 import org.apache.fineract.organisation.monetary.domain.MoneyHelper;
@@ -260,6 +261,12 @@ public class LoanSummaryData {
             remainingDays--;
         }
 
+        totalAccruedInterest = totalAccruedInterest.subtract(period.getInterestPaid()).subtract(period.getInterestWaived());
+        if (MathUtil.isLessThanZero(totalAccruedInterest)) {
+            // Set Zero If the Interest Paid + Waived is greather than Interest Accrued
+            totalAccruedInterest = BigDecimal.ZERO;
+        }
+
         return Money.of(currency, totalAccruedInterest).getAmount();
     }
 

integration-tests/src/test/java/org/apache/fineract/integrationtests/AdvancedPaymentAllocationLoanRepaymentScheduleTest.java

@@ -4739,7 +4739,7 @@ public class AdvancedPaymentAllocationLoanRepaymentScheduleTest extends BaseLoan
             addRepaymentForLoan(createdLoanId.get(), 20.50, "30 January 2024");
             loanDetails = loanTransactionHelper.getLoanDetails(createdLoanId.get());
             assertEquals(BigDecimal.ZERO, loanDetails.getSummary().getTotalUnpaidPayableDueInterest().stripTrailingZeros());
-            assertEquals(new BigDecimal("0.97"), loanDetails.getSummary().getTotalUnpaidPayableNotDueInterest().stripTrailingZeros());
+            assertEquals(new BigDecimal("0.05"), loanDetails.getSummary().getTotalUnpaidPayableNotDueInterest().stripTrailingZeros());
         });
 
         // Not Due and Due Interest