| // 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 assigned to the to local variable of type T1 |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// This test is generated from left_FutureOr_A03.dart and |
| /// local_variable_x01.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 "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>(); |
| |
| |
| |
| |
| class LocalVariableTest { |
| |
| LocalVariableTest() { |
| FutureOr<C<A>> t1 = t0Instance; |
| t1 = t0Instance; |
| } |
| |
| static staticTest() { |
| FutureOr<C<A>> t1 = t0Instance; |
| t1 = t0Instance; |
| } |
| |
| test() { |
| FutureOr<C<A>> t1 = t0Instance; |
| t1 = t0Instance; |
| } |
| } |
| |
| main() { |
| foo() { |
| FutureOr<C<A>> t1 = t0Instance; |
| t1 = t0Instance; |
| } |
| |
| FutureOr<C<A>> t1 = t0Instance; |
| t1 = t0Instance; |
| foo(); |
| LocalVariableTest x = new LocalVariableTest(); |
| x.test(); |
| LocalVariableTest.staticTest(); |
| } |