| /* |
| * 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 Null: if T0 is Null then: |
| * - if T1 is a type variable (promoted or not) the query is false |
| * - If T1 is FutureOr<S> for some S, then the query is true iff Null <: S. |
| * - If T1 is Null, S? or S* for some S, then the query is true. |
| * - Otherwise, the query is false |
| * @description Check that if type T0 is Null and T1 is FutureOr<S> for some S, |
| * and Null is subtype of S then T0 is subtype of T1. |
| * @author sgrekhov@unipro.ru |
| */ |
| /** |
| * @description Check that if type T0 is a subtype of a type T1, then instance |
| * of T0 can be be assigned to the superclass member of type T1 |
| * @author sgrekhov@unipro.ru |
| */ |
| /* |
| * This test is generated from left_null_A02.dart and |
| * class_member_x02.dart. |
| * Don't modify it. If you want to change this file, change one of the files |
| * above and then run generator.dart to regenerate the tests. |
| */ |
| |
| |
| import "dart:async"; |
| |
| Null t0Instance = null; |
| FutureOr<Null> t1Instance = null; |
| |
| const t1Default = null; |
| |
| |
| |
| |
| class ClassMemberSuper1_t02 { |
| FutureOr<Null> m = t1Default; |
| |
| ClassMemberSuper1_t02(dynamic value) { |
| m = value; |
| } |
| |
| ClassMemberSuper1_t02.named(dynamic value) { |
| m = value; |
| } |
| |
| ClassMemberSuper1_t02.short(this.m); |
| |
| void set superSetter(FutureOr<Null> val) {} |
| } |
| |
| class ClassMember1_t02 extends ClassMemberSuper1_t02 { |
| |
| ClassMember1_t02() : super(t0Instance) {} |
| |
| ClassMember1_t02.named() : super.named(t0Instance) {} |
| |
| ClassMember1_t02.short() : super.short(t0Instance); |
| |
| test() { |
| m = t0Instance; |
| superSetter = t0Instance; |
| } |
| } |
| |
| main() { |
| ClassMember1_t02 c1 = new ClassMember1_t02(); |
| c1 = new ClassMember1_t02.short(); |
| c1 = new ClassMember1_t02.named(); |
| c1.m = t0Instance; |
| c1.test(); |
| c1.superSetter = t0Instance; |
| } |