tm_app/test/model/onboarding_response_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:tm_app/data/services/model/onboarding_response/onboarding_response.dart';

void main() {
  group('OnboardingResponse Model Test', () {
    final mockJson = {
      'success': true,
      'message': 'AI onboarding started successfully',
      'data': {'status': 'started'},
      'error': {'message': null, 'code': null, 'details': null},
    };

    test('fromJson creates valid OnboardingResponse instance', () {
      final response = OnboardingResponse.fromJson(mockJson);

      expect(response.success, true);
      expect(response.message, 'AI onboarding started successfully');
      expect(response.data?.status, 'started');
    });

    test('handles null data gracefully', () {
      final response = OnboardingResponse.fromJson({
        'success': false,
        'message': 'AI service not configured',
        'data': null,
        'error': {'message': 'unavailable', 'code': '503', 'details': null},
      });

      expect(response.success, false);
      expect(response.data, isNull);
      expect(response.error?.message, 'unavailable');
    });

    test('toJson round-trips status', () {
      final response = OnboardingResponse.fromJson(mockJson);
      final json = response.toJson();
      final data = Map<String, dynamic>.from(json['data'] as Map);

      expect(json['success'], true);
      expect(data['status'], 'started');
    });

    test('equality and copyWith work as expected', () {
      final response = OnboardingResponse.fromJson(mockJson);
      final updated = response.copyWith(message: 'Updated');

      expect(updated.message, 'Updated');
      expect(updated != response, true);
    });
  });
}