import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:hepan_everyday/app/tp_startup.dart';
import 'package:hepan_everyday/app/tp_launch_page.dart';

void main() {
  testWidgets(
    'slow initialization paints branded frames instead of waiting without a Flutter UI',
    (tester) async {
      final ready = Completer<void>();
      final startup = launchApplication(
        ready: ready.future,
        child: const MaterialApp(home: Text('已读取课表')),
      );
      try {
        await tester.pump();
        await tester.pump(const Duration(seconds: 3));
        expect(find.byType(TpLaunchPage), findsOneWidget);
        expect(find.text('已读取课表'), findsNothing);
        expect(tester.binding.sendFramesToEngine, isTrue);
      } finally {
        ready.complete();
        await startup;
        await tester.pumpAndSettle();
        await tester.pumpWidget(const SizedBox());
      }
    },
  );
}