[go_router_builder] Activate leak testing (#8059)

Author: ValentinVignal

packages/go_router_builder/pubspec.yaml

@@ -27,6 +27,7 @@ dev_dependencies:
   flutter:
     sdk: flutter
   go_router: ^14.0.0
+  leak_tracker_flutter_testing: ">=3.0.0"
   test: ^1.20.0
 
 topics:

packages/go_router_builder/test/flutter_test_config.dart

@@ -0,0 +1,13 @@
+// Copyright 2013 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:leak_tracker_flutter_testing/leak_tracker_flutter_testing.dart';
+
+Future<void> testExecutable(FutureOr<void> Function() testMain) async {
+  LeakTesting.enable();
+  LeakTracking.warnForUnsupportedPlatforms = false;
+  await testMain();
+}