| // Copyright (c) 2011, 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion A constant expression is an expression whose value can never |
| /// change, and that can be evaluated entirely at compile time. |
| /// A constant expression is one of the following: |
| /// . . . |
| /// • An expression of one of the forms e1 == e2 or e1 != e2 where e1 and e2 are |
| /// constant expressions that evaluate to a numeric, string or boolean value |
| /// or to null. |
| /// @description Checks that various expressions of the specified forms can be |
| /// elements of a constant list literal and are, therefore, constant expressions. |
| /// @author iefremov |
| |
| |
| import '../../../Utils/expect.dart'; |
| |
| final constList = const [ |
| 1 == 2, |
| true != false, |
| (true != 1), |
| ((1 == 2) != ("" == "b")) == (false != true), |
| null == null, |
| ]; |
| |
| main() { |
| Expect.isTrue(constList is List); |
| } |