| // 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 fields only |
| /// @author sgrekhov22@gmail.com |
| /// |
| /// @description Check that if type T0 is a subtype of a type T1, then instance |
| /// of T0 can be assigned to the to global variable of type T1 |
| /// @author sgrekhov@unipro.ru |
| /// |
| /// This test is generated from test_types/records_A01.dart and |
| /// test_cases/global_variable_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) t0Instance = (42, 3.14, ""); |
| (num, num z, String?) t1Instance = (0, 0, null); |
| |
| const t1Default = (0, 0, null); |
| |
| class GlobalVariableTest { |
| GlobalVariableTest() { |
| t1Instance = t0Instance; |
| } |
| |
| foo() { |
| t1Instance = t0Instance; |
| } |
| |
| static test() { |
| t1Instance = t0Instance; |
| } |
| } |
| |
| main() { |
| bar () { |
| t1Instance = t0Instance; |
| } |
| |
| t1Instance = t0Instance; |
| bar(); |
| GlobalVariableTest t = new GlobalVariableTest(); |
| t.foo(); |
| GlobalVariableTest.test(); |
| } |