| // 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: |
| /// Function Type/Function: T0 is a function type and T1 is Function |
| /// @description Check that if type T0 is a function type and T1 is Function then |
| /// T0 is a subtype of T1. Test void generic function with positional arguments |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// @description Check that if type T0 is a subtype of a type T1, then instance |
| /// of T0 can be used as a return value of type T1 |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// This test is generated from function_type_function_A15.dart and |
| /// return_value_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. |
| |
| |
| |
| class C {} |
| |
| typedef void T0<X>(C c, [X? d]); |
| void t0Func<X>(C c, [X? d]) {} |
| |
| T0<C> t0Instance = t0Func; |
| Function t1Instance = () {}; |
| |
| void foo() {} |
| const t1Default = foo; |
| |
| |
| |
| |
| Function returnValueFunc() => t0Instance; |
| |
| class ReturnValueTest { |
| static Function staticTestMethod() => t0Instance; |
| |
| Function testMethod() => t0Instance; |
| |
| Function get testGetter => t0Instance; |
| } |
| |
| main() { |
| Function returnValueLocalFunc() => t0Instance; |
| |
| returnValueFunc(); |
| returnValueLocalFunc(); |
| |
| ReturnValueTest.staticTestMethod(); |
| |
| new ReturnValueTest().testMethod(); |
| new ReturnValueTest().testGetter; |
| |
| } |