// Copyright (c) 2019, the Dart 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:async'; | |
import 'package:expect/expect.dart'; | |
class A implements Future<Future<A>> { | |
@override | |
noSuchMethod(Invocation _) {} | |
} | |
void main() { | |
Expect.notSubtype<A, Future<A>>(); | |
Expect.subtype<FutureOr<A>, FutureOr<Future<A>>>(); | |
} |