| // 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: |
| /// 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 If T1 is 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 mixin member of type T1 |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// This test is generated from left_null_A06.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. |
| |
| |
| import '../../utils/common.dart'; |
| |
| // Requirements=nnbd-weak |
| import "../../utils/legacy_lib.dart"; |
| |
| Null t0Instance = null; |
| X? t1Instance = new X(); |
| |
| const t1Default = const X(); |
| |
| |
| |
| |
| class ClassMemberMixin1_t03 { |
| X? m = t1Default; |
| |
| void set superSetter(dynamic val) {} |
| } |
| |
| class ClassMember1_t03 extends Object with ClassMemberMixin1_t03 { |
| test() { |
| m = forgetType(t0Instance); |
| superSetter = forgetType(t0Instance); |
| } |
| } |
| |
| class ClassMemberMixin2_t03<X> { |
| void set superSetter(dynamic val) {} |
| } |
| |
| class ClassMember2_t03<X> extends Object with ClassMemberMixin2_t03<X> { |
| X m; |
| ClassMember2_t03(X x): m = x { } |
| test() { |
| m = forgetType(t0Instance); |
| superSetter = forgetType(t0Instance); |
| } |
| } |
| |
| main() { |
| ClassMember1_t03 c1 = new ClassMember1_t03(); |
| c1.m = forgetType(t0Instance); |
| c1.test(); |
| c1.superSetter = forgetType(t0Instance); |
| |
| // Test type parameters |
| |
| //# <-- NotGenericFunctionType |
| ClassMember2_t03<X?> c2 = new ClassMember2_t03<X?>(t1Instance); |
| c2.m = forgetType(t0Instance); |
| c2.test(); |
| c2.superSetter = forgetType(t0Instance); |
| //# --> |
| } |