feat: add alot

test/money_test.dart

@@ -0,0 +1,22 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:kooltap/utils/money.dart';
+
+void main() {
+  group('Cents.asEuro', () {
+    test('formats cents in Belgian notation', () {
+      expect(1234.asEuro, '€ 12,34');
+    });
+
+    test('formats zero', () {
+      expect(0.asEuro, '€ 0,00');
+    });
+
+    test('formats whole euros with two decimals', () {
+      expect(500.asEuro, '€ 5,00');
+    });
+
+    test('groups thousands', () {
+      expect(123456.asEuro, '€ 1.234,56');
+    });
+  });
+}