| // Copyright (c) 2020, 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 variable x is promotable via initialization given |
| /// variable model VM if x is a local variable (not a formal parameter) and: |
| /// |
| /// VM = VariableModel(declared, promoted, tested, assigned, unassigned, |
| /// captured) |
| /// and captured is false |
| /// and promoted is empty |
| /// and x is declared with no explicit type and no initializer |
| /// and assigned is false and unassigned is true |
| /// |
| /// @description Checks that if promoted is not empty then promotion via |
| /// initialization does not happen. |
| /// |
| /// @author sgrekhov@unipro.ru |
| |
| // Requirements=nnbd-strong |
| import '../../../Utils/expect.dart'; |
| |
| class S {} |
| class T extends S { |
| int foo() => 42; |
| } |
| |
| main() { |
| var x; |
| if (x is S) { |
| x = new T(); |
| Expect.throws(() { |
| x.g(); |
| }, (e) => e is NoSuchMethodError); |
| } |
| } |