// 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:
/// Left FutureOr: T0 is FutureOr<S0>
///   and Future<S0> <: T1
///   and S0 <: T1
/// @description Check that if a type T0 is FutureOr<S0> and Future<S0> and S0
/// are subtypes of a type T1, then a type T0 is a subtype of a type T1. Case
/// when an instance of T0 is an instance of S0 type and S0 is a generic type
/// @author sgrekhov@unipro.ru

import "dart:async";

class A {}
class B extends A {}
class C<X> {
  const C();
}
class S0<X> extends C<X> {}

FutureOr<S0<B>> t0Instance = new S0<B>();
FutureOr<C<A>> t1Instance = new Future<C<A>>.value(new C());

const t1Default = const C<A>();

//# @T0 = FutureOr<S0<B>>
//# @T1 = FutureOr<C<A>>