car-interface-android/test/marquee_text_test.dart

import 'package:cardash_launcher/features/home/widgets/marquee_text.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  testWidgets('long text duplicates for a seamless loop', (tester) async {
    const title = 'A very long song title that cannot possibly fit';
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          body: SizedBox(
            width: 140,
            child: MarqueeText(text: title, animate: true),
          ),
        ),
      ),
    );
    await tester.pump(const Duration(milliseconds: 100));

    expect(tester.takeException(), isNull);
    expect(find.text(title), findsNWidgets(2));
  });

  testWidgets('paused marquee does not animate', (tester) async {
    const title = 'A very long song title that cannot possibly fit';
    await tester.pumpWidget(
      const MaterialApp(
        home: Scaffold(
          body: SizedBox(
            width: 140,
            child: MarqueeText(text: title, animate: false),
          ),
        ),
      ),
    );
    await tester.pump();
    expect(tester.binding.transientCallbackCount, 0);
  });
}