blob: 061a84d4691e68a4b05a333ef3311d21a3946392 [file] [log] [blame]
// Copyright (c) 2016, 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.
import "package:expect/expect.dart";
// Regression test for recursive inheritance patterns
abstract class Comparable<T> {
int compareTo(T a);
class MI<T extends MI<T>> {}
class _MI extends MI<_MI> {}
class PMI<T extends Comparable<T>> extends MI<PMI<T>> {}
class _PMI extends PMI<_PMI> implements Comparable<_PMI> {
int compareTo(_PMI other) => throw new UnimplementedError();
void main() {
MI a = new MI<_MI>();
PMI b = new PMI<_PMI>();
a = b;
Expect.isTrue(a is MI);
Expect.isTrue(b is PMI);
Expect.isTrue(b is MI);
Expect.isTrue(b is MI<PMI>);