| /* |
| * 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 a runtime error if v is null. Test constructor |
| * @author sgrekhov@unipro.ru |
| * @issue 39723 |
| * @issue 39724 |
| */ |
| // SharedOptions=--enable-experiment=non-nullable |
| import "../../Utils/expect.dart"; |
| |
| class A { |
| String s = "Show must go on"; |
| foo() {} |
| Object? get getValue => "Lily was here"; |
| Object? get getNull => null; |
| int? operator [](int? index) => index; |
| void operator []=(int index, String val) { |
| s = val; |
| } |
| } |
| |
| main() { |
| new A()!; |
| new A()!.foo(); |
| new A()![42]; |
| new A()!?.foo(); |
| new A()!?.[42]; |
| new A().getValue!; |
| new A()[42]!; |
| new A()!.s = "Lily was here"; |
| new A()!?.s = "Lily was here"; |
| new A()![0] = "Lily was here"; |
| new A()!?.[0] = "Lily was here"; |
| Expect.throws(() {new A().getNull!;}); |
| Expect.throws(() {new A()[null]!;}); |
| } |