| // 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. |
| |
| /// @assertion void complete([T value]) |
| /// Calling complete or completeError must not be done more than once. |
| /// @description Checks that an error is thrown if |
| /// the completer is already completed with a value. |
| /// @author msyabro |
| |
| import "../../../Utils/expect.dart"; |
| import "dart:async"; |
| |
| main() { |
| var completer = new Completer(); |
| completer.complete('value'); |
| |
| Expect.throws(() => completer.complete('another value')); |
| } |