blob: bf59bdb904b8064c380a1462316c92db54cef8c4 [file] [log] [blame]
// Copyright (c) 2020, 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 The NORM relation defines the canonical representative of classes
/// of equivalent types...
/// This is based on the following equations:
/// FutureOr<T> == Future<T> if T <: Future<T>
/// @description Checks that if T <: Future<T> then FutureOr<T> == Future<T>
/// @author
// Requirements=nnbd-strong
import 'dart:async';
class A<X> {}
class B<X> implements A<X> {}
class C extends B<FutureOr<Null>> implements A<Future<Null>?> {}
main() {
new C();