feat(tests): updated tests coverage to 66.5%

test/features/profile/models/sub_model_test.dart

@@ -179,5 +179,74 @@ void main() {
       expect(sub.name, 'User One');
       expect(sub.isEntitySubscribedByMe, true);
     });
+
+    test('toJson serializes SubModel correctly', () {
+      final sub = SubModel(
+        slug: 'user1',
+        name: 'User One',
+        city: 'New York',
+        birthdate: DateTime(1990, 1, 1),
+        isEntitySubscribedByMe: true,
+        profilePhotoUrl: 'photo1.jpg',
+        roles: ['consultant'],
+      );
+
+      final json = sub.toJson();
+
+      expect(json['slug'], 'user1');
+      expect(json['name'], 'User One');
+      expect(json['city'], 'New York');
+      expect(json['is_entity_subscribed_by_me'], isTrue);
+      expect(json['profile_photo_url'], 'photo1.jpg');
+      expect(json['roles'], ['consultant']);
+      expect(json.containsKey('birthdate'), isTrue);
+    });
+  });
+
+  group('SubPaginationModel', () {
+    test('toJson serializes SubPaginationModel correctly', () {
+      final subs = [
+        SubModel(
+          slug: 'user1',
+          name: 'User One',
+          city: 'New York',
+          birthdate: DateTime(1990, 1, 1),
+          isEntitySubscribedByMe: true,
+          profilePhotoUrl: 'photo1.jpg',
+          roles: ['consultant'],
+        ),
+      ];
+
+      const links = Links(
+        first: 'http://example.com?page=1',
+        last: 'http://example.com?page=1',
+        prev: null,
+        next: null,
+      );
+
+      const meta = Meta(
+        currentPage: 1,
+        from: 1,
+        lastPage: 1,
+        links: [],
+        path: '/api/subs',
+        perPage: 10,
+        to: 1,
+        total: 1,
+      );
+
+      final model = SubPaginationModel(
+        data: subs,
+        links: links,
+        meta: meta,
+      );
+
+      final json = model.toJson();
+
+      expect(json.containsKey('data'), isTrue);
+      expect((json['data'] as List).length, 1);
+      expect(json.containsKey('links'), isTrue);
+      expect(json.containsKey('meta'), isTrue);
+    });
   });
 }