Add unit tests for shouldClearConvertedAmount

Cover all branches: undefined destinationCurrency, matching source/destination,
matching transaction/destination, cross-currency clear, and sourceCurrency
fallback to transactionCurrency.

Co-authored-by: Aimane Chnaif <aimane-chnaif@users.noreply.github.com>

Author: MelvinBot

tests/unit/TransactionUtilsTest.ts

@@ -2930,4 +2930,36 @@ describe('TransactionUtils', () => {
             expect(TransactionUtils.getExchangeRate(transaction)).toBe('1.25 USD/EUR');
         });
     });
+
+    describe('shouldClearConvertedAmount', () => {
+        it('returns false when destinationCurrency is undefined', () => {
+            const transaction = generateTransaction({currency: 'USD'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, 'EUR', undefined)).toBe(false);
+        });
+
+        it('returns false when sourceCurrency equals destinationCurrency', () => {
+            const transaction = generateTransaction({currency: 'USD'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, 'EUR', 'EUR')).toBe(false);
+        });
+
+        it('returns false when transactionCurrency equals destinationCurrency', () => {
+            const transaction = generateTransaction({currency: 'EUR'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, 'USD', 'EUR')).toBe(false);
+        });
+
+        it('returns true when both sourceCurrency and transactionCurrency differ from destinationCurrency', () => {
+            const transaction = generateTransaction({currency: 'GBP'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, 'USD', 'EUR')).toBe(true);
+        });
+
+        it('falls back to transactionCurrency when sourceCurrency is undefined and currencies differ', () => {
+            const transaction = generateTransaction({currency: 'GBP'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, undefined, 'EUR')).toBe(true);
+        });
+
+        it('returns false when sourceCurrency is undefined and transactionCurrency matches destinationCurrency', () => {
+            const transaction = generateTransaction({currency: 'EUR'});
+            expect(TransactionUtils.shouldClearConvertedAmount(transaction, undefined, 'EUR')).toBe(false);
+        });
+    });
 });