feat(tests): updated tests coverage to 66.5%

test/features/profile/models/circumference_model_test.dart

@@ -0,0 +1,51 @@
+import 'package:eatvio_app/features/profile/models/circumference_model.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('CircumferenceModel', () {
+    test('fromJson parses all fields correctly', () {
+      final json = {
+        'id': 1,
+        'user_id': 123,
+        'chest_circumference': 100,
+        'waist_circumference': 80,
+        'hip_circumference': 95,
+        'created_at': '2024-01-15T10:00:00Z',
+        'updated_at': '2024-01-16T10:00:00Z',
+      };
+
+      final model = CircumferenceModel.fromJson(json);
+
+      expect(model.id, 1);
+      expect(model.userId, 123);
+      expect(model.chestCircumference, 100);
+      expect(model.waistCircumference, 80);
+      expect(model.hipCircumference, 95);
+      expect(model.createdAt, isA<DateTime>());
+      expect(model.updatedAt, isA<DateTime>());
+    });
+
+    test('toJson serializes all fields correctly', () {
+      final model = CircumferenceModel(
+        id: 1,
+        userId: 123,
+        chestCircumference: 100,
+        waistCircumference: 80,
+        hipCircumference: 95,
+        createdAt: DateTime(2024, 1, 15, 10, 0, 0),
+        updatedAt: DateTime(2024, 1, 16, 10, 0, 0),
+      );
+
+      final json = model.toJson();
+
+      expect(json['id'], 1);
+      expect(json['user_id'], 123);
+      expect(json['chest_circumference'], 100);
+      expect(json['waist_circumference'], 80);
+      expect(json['hip_circumference'], 95);
+      expect(json['created_at'], isA<String>());
+      expect(json['updated_at'], isA<String>());
+    });
+  });
+}
+