blob: 61a2b8d9df37dce6eb98ef913613cb55d6ea065a [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:checkedInstance,checkedTypeArgument,checks=[],instance,typeArgument*/
class A {}
/*class: B:checkedInstance,checks=[],instance,typeArgument*/
class B {}
/*class: FutureMock:checks=[$isFuture],instance*/
class FutureMock<T> implements Future<T> {
final T value;
Future<T> timeout(Duration timeLimit, {FutureOr<T> onTimeout()}) => null;
Stream<T> asStream() => null;
Future<T> whenComplete(FutureOr action()) => null;
Future<T> catchError(Function onError, {bool test(bool test(Object error))}) {
return null;
Future<S> then<S>(FutureOr<S> onValue(T value), {Function onError}) => null;
test(o) => o is FutureOr<A>;
main() {
Expect.isTrue(test(new A()));
Expect.isTrue(test(new FutureMock<A>(new A())));
Expect.isFalse(test(new B()));
Expect.isFalse(test(new FutureMock<B>(new B())));