| // 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 FutureOr: T0 is FutureOr<S0> |
| * and Future<S0> <: T1 |
| * and S0 <: T1 |
| * @description Check that if a type T0 is FutureOr<S0> and Future<S0> and S0 |
| * are subtypes of a type T1, then a type T0 is a subtype of a type T1. Case |
| * when an instance of T0 is an instance of S0 type and S0 is a generic type |
| * @author sgrekhov@unipro.ru |
| */ |
| /** |
| * @description Check that if type T0 is a subtype of a type T1, then instance |
| * of T0 can be be used as a return value of type T1 |
| * @author sgrekhov@unipro.ru |
| */ |
| /* |
| * This test is generated from left_FutureOr_A03.dart and |
| * return_value_x01.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"; |
| |
| class A {} |
| class B extends A {} |
| class C<X> { |
| const C(); |
| } |
| class S0<X> extends C<X> {} |
| |
| FutureOr<S0<B>> t0Instance = new S0<B>(); |
| FutureOr<C<A>> t1Instance = new Future<C<A>>.value(new C()); |
| |
| const t1Default = const C<A>(); |
| |
| |
| |
| |
| FutureOr<C<A>> returnValueFunc() => t0Instance; |
| |
| class ReturnValueTest { |
| static FutureOr<C<A>> staticTestMethod() => t0Instance; |
| |
| FutureOr<C<A>> testMethod() => t0Instance; |
| |
| FutureOr<C<A>> get testGetter => t0Instance; |
| } |
| |
| main() { |
| FutureOr<C<A>> returnValueLocalFunc() => t0Instance; |
| |
| returnValueFunc(); |
| returnValueLocalFunc(); |
| |
| ReturnValueTest.staticTestMethod(); |
| |
| new ReturnValueTest().testMethod(); |
| new ReturnValueTest().testGetter; |
| |
| } |