car-interface-android/test/obd_card_test.dart

import 'package:cardash_launcher/core/theme/app_theme.dart';
import 'package:cardash_launcher/features/home/widgets/obd_card.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('OBD card renders speed, throttle and economy', (tester) async {
    await tester.pumpWidget(
      MaterialApp(
        theme: AppTheme.dark(),
        home: const Scaffold(
          body: Center(
            child: SizedBox(
              width: 380,
              child: ObdCard(
                speedKmh: 44,
                throttlePercent: 22,
                economyL100: 7.5,
              ),
            ),
          ),
        ),
      ),
    );
    await tester.pump(const Duration(milliseconds: 250));

    expect(tester.takeException(), isNull);
    expect(find.text('44'), findsOneWidget);
    expect(find.text('km/h'), findsOneWidget);
    expect(find.text('Throttle'), findsOneWidget);
    expect(find.text('7.5 L/100 km'), findsOneWidget);
  });
}