example

import 'package:covidnearme/src/blocs/checkup/checkup.dart';
import 'package:covidnearme/src/blocs/preferences/preferences.dart';
import 'package:covidnearme/src/blocs/questions/questions_bloc.dart';
import 'package:covidnearme/src/data/repositories/questions.dart';
import 'package:covidnearme/src/ui/screens/checkup/checkup.dart'; 
import 'package:file/memory.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:hydrated_bloc/hydrated_bloc.dart';

void main() {
  setUp(() async {
    // Use a hermetic file system that is cleaned up between tests.
    final fs = MemoryFileSystem.test();

    BlocSupervisor.delegate = await HydratedBlocDelegate.build(
      storageDirectory: fs.systemTempDirectory.createTempSync(),
    );
  });

  testWidgets('description', (tester) async {
    final questions = QuestionsBloc(questionsRepository: QuestionsRepository());
    final checkup = CheckupBloc();
    final preferences = PreferencesBloc();

    await tester.pumpWidget(setUpProviders(
      questions,
      checkup,
      preferences,
    ));
  });
}

Widget setUpProviders(
  QuestionsBloc questionsBloc,
  CheckupBloc checkupBloc,
  PreferencesBloc preferences,
) {
  return MaterialApp(
    home: Scaffold(
      body: BlocProvider(
        child: BlocProvider(
          child: BlocProvider(
            child: CheckupScreen(),
            create: (BuildContext context) => preferences,
          ),
          create: (BuildContext context) => checkupBloc,
        ),
        create: (BuildContext context) => questionsBloc,
      ),
    ),
  );
}