blob: 629d268c8fea2cd8639f516ba6d12544d1f83b83 [file] [log] [blame]
// Copyright (c) 2018, 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 = 2.7
import 'dart:async';
import 'package:expect/expect.dart';
/*class: global#Future:checkedInstance*/
/*class: A:checks=[],instance*/
class A<T> {
m(o) => o is FutureOr<B<T>>;
/*class: B:checkedInstance,checkedTypeArgument,checks=[],instance,typeArgument*/
class B<T> {}
/*class: C:checkedInstance,checkedTypeArgument,typeArgument*/
class C {}
/*class: D:checkedInstance,checkedTypeArgument,typeArgument*/
class D {}
main() {
Expect.isTrue(new A<FutureOr<C>>().m(new B<C>()));
Expect.isFalse(new A<FutureOr<D>>().m(new B<C>()));