| // 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: |
| /// Right Object: if T1 is Object then: |
| /// - if T0 is an unpromoted type variable with bound B then T0 <: T1 iff |
| /// B <: Object |
| /// - if T0 is a promoted type variable X & S then T0 <: T1 iff S <: Object |
| /// - if T0 is FutureOr<S> for some S, then T0 <: T1 iff S <: Object. |
| /// - if T0 is S* for any S, then T0 <: T1 iff S <: T1 |
| /// - if T0 is Null, dynamic, void, or S? for any S, then the subtyping does not |
| /// hold (per above, the result of the subtyping query is false). |
| /// - Otherwise T0 <: T1 is true. |
| /// @description Check that if T0 is a promoted type variable X & S and |
| /// S <: Object then T0 is subtype of Object even is X is not subtype of Object |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// @description Check that if type T0 is a subtype of a type T1, then instance |
| /// of T0 can be assigned to the mixin member of type T1 |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// This test is generated from right_object_A03.dart and |
| /// class_member_x03.dart. |
| /// Don't modify it. If you want to change this test, change one of the files |
| /// above and then run generator.dart to regenerate the tests. |
| |
| |
| |
| // Requirements=nnbd-weak |
| import "../../utils/legacy_lib.dart"; |
| class S extends X {} |
| |
| S t0Instance = new S(); |
| Object t1Instance = new Object(); |
| |
| const t1Default = const Object(); |
| |
| |
| |
| |
| |
| class ClassMemberMixin1_t03 { |
| Object m = t1Default; |
| |
| void set superSetter(dynamic val) {} |
| } |
| |
| class ClassMember1_t03 extends Object with ClassMemberMixin1_t03 { |
| test() { |
| m = t0Instance; |
| superSetter = t0Instance; |
| } |
| } |
| |
| |
| |
| test<T>(T t0Instance) { |
| if (t0Instance is S) { |
| |
| ClassMember1_t03 c1 = new ClassMember1_t03(); |
| c1.m = t0Instance; |
| c1.test(); |
| c1.superSetter = t0Instance; |
| |
| } |
| } |
| |
| main() { |
| test<X>(t0Instance); |
| } |