blob: 9d5adb323f05cb932781e2b815526543c67d6ef2 [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.
* @assertion We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
* when:
* Right FutureOr: T1 is FutureOr<S1> and
* either T0 <: Future<S1>
* or T0 <: S1
* or T0 is X0 and X0 has bound S0 and S0 <: T1
* or T0 is X0 & S0 and S0 <: T1
* @description Check that if a type T1 is FutureOr<S1> and a type T0 is not
* a subtype of types Future<S1> or S1, then a type T0 is not a subtype of a
* type T1.
* @author
// SharedOptions=--enable-experiment=non-nullable
import "dart:async";
class S1 {
const S1();
class T0 {}
T0 t0Instance = new T0();
FutureOr<S1> t1Instance = new Future.value(new S1());
const t1Default = const S1();
//# @T0 = T0
//# @T1 = FutureOr<S1>