| // Copyright (c) 2022, 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: |
| /// A record type A is a subtype of record type B iff they have same shape and |
| /// the types of all fields of A are subtypes of the corresponding field types |
| /// of B |
| /// |
| /// @description Check that if type T0 is a record with the same shape as T1 |
| /// and the type of each field of T0 is a subtype of the corresponding field |
| /// types of T1 then T0 is a subtype of T1. Check positional and named fields |
| /// @author sgrekhov22@gmail.com |
| /// |
| /// @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 test_types/records_A02.dart and |
| /// test_cases/return_value_x01.dart. Don't modify it! |
| /// If you need to change this test, then change one of the files above and then |
| /// run generator/generator.dart to regenerate the tests. |
| |
| // SharedOptions=--enable-experiment=records |
| |
| (int x, double y, String, {int n1, String n2}) t0Instance = |
| (n1: 1, n2: "n2", 42, 3.14, ""); |
| (num, num z, String?, {num n1, String? n2}) t1Instance = |
| (0, n1: 0, 0, n2: null, null); |
| |
| const t1Default = (0, 0, null, n1: 0.1, n2: ""); |
| |
| (num, num, String?, {num n1, String? n2}) returnValueFunc() => t0Instance; |
| |
| class ReturnValueTest { |
| static (num, num, String?, {num n1, String? n2}) staticTestMethod() => t0Instance; |
| |
| (num, num, String?, {num n1, String? n2}) testMethod() => t0Instance; |
| |
| (num, num, String?, {num n1, String? n2}) get testGetter => t0Instance; |
| } |
| |
| main() { |
| (num, num, String?, {num n1, String? n2}) returnValueLocalFunc() => t0Instance; |
| |
| returnValueFunc(); |
| returnValueLocalFunc(); |
| |
| ReturnValueTest.staticTestMethod(); |
| |
| new ReturnValueTest().testMethod(); |
| new ReturnValueTest().testGetter; |
| } |