feat(dependencies): add rxdart package and improve string extension methods for better handling of empty strings and gender parsing

test/features/diets/models/diet_likes_model_test.dart

@@ -0,0 +1,29 @@
+import 'package:eatvio_app/features/diets/models/diet_likes_model.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('DietLikesModel', () {
+    test('создает DietLikesModel с правильными значениями', () {
+      const model = DietLikesModel(
+        totalLikes: 10,
+        isLiked: true,
+      );
+
+      expect(model.totalLikes, 10);
+      expect(model.isLiked, isTrue);
+    });
+
+    test('fromJson создает DietLikesModel из JSON', () {
+      final json = {
+        'total_likers': 10,
+        'is_liked': true,
+      };
+
+      final model = DietLikesModel.fromJson(json);
+
+      expect(model.totalLikes, 10);
+      expect(model.isLiked, isTrue);
+    });
+  });
+}
+