How do I initialize Firebase App in Flutter widget testing

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 :

Please don't add screenshots, just copy logs/errors as code

Adelina
– Adelina

2020-10-06 19:12:26 +00:00
Commented Oct 6, 2020 at 19:12 — Adelina
– Adelina, Commented Oct 6, 2020 at 19:12
You can see my answer here that solved this problem for me.

Gareth Maybery
– Gareth Maybery

2020-11-07 17:04:34 +00:00
Commented Nov 7, 2020 at 17:04 — Gareth Maybery
– Gareth Maybery, Commented Nov 7, 2020 at 17:04

Akora Ing. DKB · Accepted Answer · 2020-10-06 20:00:15Z

4

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.

edited Oct 6, 2020 at 20:00

answered Oct 6, 2020 at 19:53

Akora Ing. DKB

1,0516 silver badges11 bronze badges

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