| // Copyright (c) 2019, 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 The [??] operator only evaluates its second operand if the first |
| /// evaluates to [null], and the second operand must be a potentially constant |
| /// expression. |
| /// @description Checks that operator [??] operators rejects the second operand |
| /// if the first one is not [null] in potentially constant expression. |
| /// @author iarkh@unipro.ru |
| |
| import "../../Utils/expect.dart"; |
| |
| class MyClass { |
| final String a; |
| const MyClass(String? i1, Object i2) : a = (i1 ?? (i2 as String)); |
| } |
| |
| main() { |
| const MyClass c1 = MyClass("testme", 123); |
| Expect.equals("testme", c1.a); |
| |
| const MyClass c2 = MyClass("111", "222"); |
| Expect.equals("111", c2.a); |
| } |
