[null-safety] migrate hello_world to null safety (#70112)
* [null-safety] migrate flutter gallery to null safety
diff --git a/examples/hello_world/pubspec.yaml b/examples/hello_world/pubspec.yaml
index ccedd1c..f320990 100644
--- a/examples/hello_world/pubspec.yaml
+++ b/examples/hello_world/pubspec.yaml
@@ -2,7 +2,7 @@
environment:
# The pub client defaults to an <2.0.0 sdk constraint which we need to explicitly overwrite.
- sdk: ">=2.0.0-dev.68.0 <3.0.0"
+ sdk: ">=2.12.0-0 <3.0.0"
dependencies:
flutter:
diff --git a/examples/hello_world/test_driver/smoke_web_engine_test.dart b/examples/hello_world/test_driver/smoke_web_engine_test.dart
index a86933e..3fdc367 100644
--- a/examples/hello_world/test_driver/smoke_web_engine_test.dart
+++ b/examples/hello_world/test_driver/smoke_web_engine_test.dart
@@ -2,6 +2,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
+// @dart = 2.8
import 'dart:async';
import 'package:flutter_driver/flutter_driver.dart';
@@ -23,9 +24,7 @@
// Close the connection to the driver after the tests have completed.
tearDownAll(() async {
- if (driver != null) {
- driver.close();
- }
+ driver.close();
});
test('title is correct', () async {
