| // 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 An expression of the form e! evaluates e to a value v, throws a |
| * runtime error if v is null, and otherwise evaluates to v. |
| * |
| * @description Check that an expression of the form e! evaluates e to a value |
| * v, throws no runtime error if v is not null. Test 42 |
| * @author sgrekhov@unipro.ru |
| * @static-warning |
| * @issue 39723 |
| */ |
| // Requirements=nnbd-strong |
| |
| import "../../Utils/expect.dart"; |
| |
| extension on int { |
| String call(int i) => "Lily was here $i times"; |
| Object? operator [](int index) => index; |
| void set s(int value) {} |
| void operator []=(int index, int val) {} |
| } |
| |
| main() { |
| Expect.equals("Lily was here 2 times", 42!(2)); /// static type warning |
| Expect.equals(24, 42![24]); /// static type warning |
| 42![24] = 24; /// static type warning |
| 42!.s = 24; /// static type warning |
| } |