如何在 Flutter 小部件测试中初始化 Firebase 应用程序

Question

So I am new in flutter and trying to perform widget testing on my app, but I am keep getting this weird error. below is my test file

import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:folk_team_app/provider/auth_provider.dart';
import 'package:folk_team_app/screens/phone_login.dart';
import 'package:provider/provider.dart';

void main() async {
  TestWidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();

  Widget loginScreen = ChangeNotifierProvider<AuthProvider>(
      create: (context) => AuthProvider(),
      builder: (context, child) {
        return MaterialApp(
          home: PhoneLogineScreen(),
        );
      });

  testWidgets('Phone Authetication Page', (WidgetTester tester) async {
    // Build our app and trigger a frame.

    await tester.pumpWidget(loginScreen);
    await tester.pump(const Duration(seconds: 10));
    

    final titleText = find.text('Screen Title');

    // Verify that our counter starts at 0.
    expect(titleTextt, findsOneWidget);
  });
}

here is the error :

Answer 1

You can't directly test Firebase because it requires platform configurations in order to initialize it properly. You need to mock Firebase in the test environment using mockito .

You may find this comment and tutorial video helpful.