| // Copyright (c) 2021, 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 Similarly, [params] is almost exactly the same parameter list |
| /// as the constructor [C.name], with the one exception that initializing |
| /// formals are represented by normal parameters with the same name and type. |
| /// All remaining properties of the parameters are the same as for the |
| /// corresponding constructor parameter, including any default values, and |
| /// [args] is an argument list passing those parameters to [C.name] directly as |
| /// they are received. |
| /// |
| /// @description Checks that [params] is exactly the same parameter list - test |
| /// required named parameter. |
| /// @author iarkh@unipro.ru |
| |
| // SharedOptions=--enable-experiment=constructor-tearoffs |
| |
| import "../../Utils/expect.dart"; |
| |
| class C { |
| int? ii; |
| |
| C.constr({required int i}) { |
| ii = i; |
| } |
| } |
| |
| dynamic d = 1.1; |
| |
| main() { |
| var v = C.constr; |
| Expect.isTrue(v is C Function({ required int i })); |
| Expect.runtimeIsType<C Function({ required int i })>(v); |
| |
| C c1 = v(i: 1); |
| Expect.equals(1, c1.ii); |
| |
| Expect.throws(() { v(i: d); }); |
| Expect.throws(() { v(i: "42" as dynamic); }); |
| } |