mnemo_cards/mnemo_cards_telegram_bot/test/bot_config_test.dart

import 'package:mnemo_cards_telegram_bot/bot_config.dart';
import 'package:test/test.dart';

void main() {
  group('BotConfig', () {
    test('prefers CLI backend url when provided', () {
      final parser = buildParser();
      final results =
          parser.parse(['--backend-url', 'https://api.example.com']);

      final config =
          BotConfig.fromArgs(results, environment: const <String, String>{});

      expect(config.backendUrl, equals('https://api.example.com'));
    });

    test('falls back to environment variables when CLI arg missing', () {
      final parser = buildParser();
      final results = parser.parse(<String>[]);

      final config = BotConfig.fromArgs(
        results,
        environment: const {'MNEMO_BACKEND_URL': 'https://env.example.com'},
      );

      expect(config.backendUrl, equals('https://env.example.com'));
    });

    test('uses default backend url when neither CLI nor env provided', () {
      final parser = buildParser();
      final results = parser.parse(<String>[]);

      final config =
          BotConfig.fromArgs(results, environment: const <String, String>{});

      expect(config.backendUrl, equals(BotConfig.defaultBackendUrl));
    });
  });
}