fix: alot

test/money_test.dart

@@ -19,4 +19,49 @@ void main() {
       expect(123456.asEuro, '€ 1.234,56');
     });
   });
+
+  group('parseEuroToCents', () {
+    test('accepts a comma or a dot as decimal separator', () {
+      expect(parseEuroToCents('2,50'), 250);
+      expect(parseEuroToCents('2.50'), 250);
+    });
+
+    test('accepts whole euros and a single decimal', () {
+      expect(parseEuroToCents('3'), 300);
+      expect(parseEuroToCents('3,5'), 350);
+      expect(parseEuroToCents('0'), 0);
+    });
+
+    test('ignores surrounding whitespace', () {
+      expect(parseEuroToCents(' 4,20 '), 420);
+    });
+
+    test('is exact where doubles would round', () {
+      expect(parseEuroToCents('0,29'), 29);
+      expect(parseEuroToCents('1,15'), 115);
+      expect(parseEuroToCents('4,35'), 435);
+    });
+
+    test('rejects more than two decimals instead of rounding', () {
+      expect(parseEuroToCents('2,505'), isNull);
+    });
+
+    test('rejects anything that is not a plain amount', () {
+      for (final input in [
+        '',
+        '-1',
+        'abc',
+        '1e3',
+        'NaN',
+        'Infinity',
+        '1.000,50',
+        '2,',
+        ',50',
+        '€2',
+        '1234567',
+      ]) {
+        expect(parseEuroToCents(input), isNull, reason: input);
+      }
+    });
+  });
 }