test(firebase_core): migrate tests

packages/firebase_app_check/firebase_app_check/example/pubspec.yaml

@@ -6,7 +6,7 @@ publish_to: 'none'
 version: 1.0.0+1
 
 environment:
-  sdk: ">=2.7.0 <3.0.0"
+  sdk: '>=2.7.0 <3.0.0'
 
 dependencies:
   cupertino_icons: ^0.1.2
@@ -30,7 +30,7 @@ dependency_overrides:
     path: ../../../firebase_core/firebase_core_web
 
 dev_dependencies:
-  drive: 0.1.0
+  drive: ^1.0.0-1.0.nullsafety.1
   flutter_driver:
     sdk: flutter
   test: any

packages/firebase_app_check/firebase_app_check/example/test_driver/firebase_app_check_e2e.dart

@@ -1,6 +1,3 @@
-// ignore_for_file: require_trailing_commas
-// @dart = 2.9
-
 // Copyright 2021, the Chromium project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

packages/firebase_app_check/firebase_app_check/example/test_driver/firebase_app_check_e2e_test.dart

@@ -1,5 +1,3 @@
-// ignore_for_file: require_trailing_commas
-// @dart=2.9
 // Copyright 2021, the Chromium project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

packages/firebase_core/firebase_core/example/pubspec.yaml

@@ -2,7 +2,7 @@ name: firebase_core_example
 description: Demonstrates how to use the firebase_core plugin.
 
 environment:
-  sdk: ">=2.12.0 <3.0.0"
+  sdk: '>=2.12.0 <3.0.0'
 
 dependencies:
   firebase_core:
@@ -17,7 +17,7 @@ dependency_overrides:
     path: ../../firebase_core_web
 
 dev_dependencies:
-  e2e: ^0.6.1
+  drive: ^1.0.0-1.0.nullsafety.1
   flutter_driver:
     sdk: flutter
   flutter_test:

packages/firebase_core/firebase_core/example/test_driver/firebase_core_e2e.dart

@@ -1,23 +1,20 @@
-// ignore_for_file: require_trailing_commas
-// @dart = 2.9
-
 // Copyright 2019, the Chromium project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart=2.9
-
 import 'dart:io';
-import 'package:e2e/e2e.dart';
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_core_platform_interface/firebase_core_platform_interface.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-void main() {
-  E2EWidgetsFlutterBinding.ensureInitialized();
+import 'package:drive/drive.dart' as drive;
 
+void main() => drive.main(testsMain);
+
+void testsMain() {
   String testAppName = 'TestApp';
-  FirebaseOptions testAppOptions;
+  FirebaseOptions? testAppOptions;
+
   if (Platform.isIOS || Platform.isMacOS) {
     testAppOptions = const FirebaseOptions(
       appId: '1:448618578101:ios:0b650370bb29e29cac3efc',
@@ -39,28 +36,28 @@ void main() {
     await Firebase.initializeApp(name: testAppName, options: testAppOptions);
   });
 
-  testWidgets('Firebase.apps', (WidgetTester tester) async {
+  test('Firebase.apps', () async {
     List<FirebaseApp> apps = Firebase.apps;
     expect(apps.length, 1);
     expect(apps[0].name, testAppName);
     expect(apps[0].options, testAppOptions);
   });
 
-  testWidgets('Firebase.app()', (WidgetTester tester) async {
+  test('Firebase.app()', () async {
     FirebaseApp app = Firebase.app(testAppName);
 
     expect(app.name, testAppName);
     expect(app.options, testAppOptions);
   });
 
-  testWidgets('Firebase.app() Exception', (WidgetTester tester) async {
+  test('Firebase.app() Exception', () async {
     expect(
       () => Firebase.app('NoApp'),
       throwsA(noAppExists('NoApp')),
     );
   });
 
-  testWidgets('FirebaseApp.delete()', (WidgetTester tester) async {
+  test('FirebaseApp.delete()', () async {
     await Firebase.initializeApp(name: 'SecondaryApp', options: testAppOptions);
 
     expect(Firebase.apps.length, 2);
@@ -72,8 +69,7 @@ void main() {
     expect(Firebase.apps.length, 1);
   });
 
-  testWidgets('FirebaseApp.setAutomaticDataCollectionEnabled()',
-      (WidgetTester tester) async {
+  test('FirebaseApp.setAutomaticDataCollectionEnabled()', () async {
     FirebaseApp app = Firebase.app(testAppName);
     bool enabled = app.isAutomaticDataCollectionEnabled;
 
@@ -82,8 +78,7 @@ void main() {
     expect(app.isAutomaticDataCollectionEnabled, !enabled);
   });
 
-  testWidgets('FirebaseApp.setAutomaticResourceManagementEnabled()',
-      (WidgetTester tester) async {
+  test('FirebaseApp.setAutomaticResourceManagementEnabled()', () async {
     FirebaseApp app = Firebase.app(testAppName);
 
     await app.setAutomaticResourceManagementEnabled(true);

packages/firebase_core/firebase_core/example/test_driver/firebase_core_e2e_test.dart

@@ -1,12 +1,7 @@
-// ignore_for_file: require_trailing_commas
-// @dart = 2.9
-
 // Copyright 2020, the Chromium project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// @dart=2.9
-
-import 'package:e2e/e2e_driver.dart' as e2e;
+import 'package:drive/drive_driver.dart' as drive;
 
-Future<void> main() async => e2e.main();
+void main() => drive.main();