mnemo_cards/mnemo_cards_common/test/user_dto_telegram_test.dart

import 'package:test/test.dart';
import 'package:mnemo_cards_common/mnemo_cards_common.dart';

void main() {
  group('UserDto telegram field', () {
    test('should serialize and deserialize with telegram', () {
      final userDto = UserDto(
        id: 'test-id',
        name: 'Test User',
        email: 'test@example.com',
        telegram: '@testuser',
        admin: false,
        packs: ['pack1', 'pack2'],
        purchases: ['purchase1'],
      );

      final json = userDto.toJson();
      expect(json['telegram'], equals('@testuser'));
      expect(json['email'], equals('test@example.com'));

      final deserialized = UserDto.fromJson(json);
      expect(deserialized.telegram, equals('@testuser'));
      expect(deserialized.email, equals('test@example.com'));
      expect(deserialized.name, equals('Test User'));
    });

    test('should handle null telegram', () {
      final userDto = UserDto(
        id: 'test-id',
        name: 'Test User',
        email: 'test@example.com',
        telegram: null,
        admin: false,
      );

      final json = userDto.toJson();
      expect(json['telegram'], isNull);

      final deserialized = UserDto.fromJson(json);
      expect(deserialized.telegram, isNull);
      expect(deserialized.email, equals('test@example.com'));
    });

    test('should handle missing telegram in JSON', () {
      final json = {
        'id': 'test-id',
        'name': 'Test User',
        'email': 'test@example.com',
        'admin': false,
        'packs': <String>[],
        'purchases': <String>[],
      };

      final userDto = UserDto.fromJson(json);
      expect(userDto.telegram, isNull);
      expect(userDto.email, equals('test@example.com'));
    });

    test('should support telegram without email for Telegram-only users', () {
      final userDto = UserDto(
        id: 'test-id',
        name: 'Telegram User',
        email: null,
        telegram: '@telegram_only',
        admin: false,
      );

      final json = userDto.toJson();
      expect(json['telegram'], equals('@telegram_only'));
      expect(json['email'], isNull);

      final deserialized = UserDto.fromJson(json);
      expect(deserialized.telegram, equals('@telegram_only'));
      expect(deserialized.email, isNull);
    });

    test('should work with copyWith for telegram', () {
      final userDto = UserDto(
        id: 'test-id',
        name: 'Test User',
        email: 'test@example.com',
        telegram: '@oldusername',
        admin: false,
      );

      final updated = userDto.copyWith(telegram: '@newusername');
      expect(updated.telegram, equals('@newusername'));
      expect(updated.email, equals('test@example.com'));
      expect(userDto.telegram, equals('@oldusername')); // Original unchanged
    });

    test('should handle both email and telegram contact methods', () {
      final userDto = UserDto(
        id: 'test-id',
        name: 'Test User',
        email: 'user@example.com',
        telegram: '@testuser',
        admin: true,
        packs: ['pack1'],
        purchases: ['purchase1'],
      );

      expect(userDto.email, equals('user@example.com'));
      expect(userDto.telegram, equals('@testuser'));
      expect(userDto.admin, isTrue);

      final json = userDto.toJson();
      final deserialized = UserDto.fromJson(json);
      
      expect(deserialized.email, equals('user@example.com'));
      expect(deserialized.telegram, equals('@testuser'));
      expect(deserialized.admin, isTrue);
    });

    test('empty UserDto should have null telegram', () {
      final empty = UserDto.empty;
      expect(empty.telegram, isNull);
      expect(empty.email, isNull);
    });
  });
}