| // 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 We say that a type T0 is a subtype of a type T1 (written T0 <: T1) |
| * when: |
| * Left Legacy if T0 is S0* then: |
| * - T0 <: T1 iff S0 <: T1. |
| * @description Check that if type T0 is S0* and S0 <: T1 then T0 is subtype of |
| * T1. |
| * @author sgrekhov@unipro.ru |
| */ |
| // Requirements=nnbd-weak |
| import "../../utils/legacy_lib.dart"; |
| |
| class A extends X { |
| const A(); |
| } |
| |
| X t0Instance = new X(); |
| A t1Instance = new A(); |
| |
| const t1Default = const A(); |
| |
| //# @T0 = X |
| //# @T1 = A |
