| /* |
| * 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 Future<T> elementAt(int index) |
| * If a done event occurs before the value is found, the future completes with a RangeError. |
| * @description Checks that if a done event occurs before the value is found, |
| * the future completes with a RangeError. |
| * @author kaigorodov |
| */ |
| |
| import "dart:async"; |
| import "../../../Utils/async_utils.dart"; |
| import "../../../Utils/expect.dart"; |
| import "IsolateStream.dart" as IsolateStream; |
| |
| void checkError(Stream s, index) { |
| asyncStart(); |
| s.elementAt(index).then((actual){ |
| Expect.fail("unexpected onValue call"); |
| }, |
| onError: (error) { |
| Expect.isTrue(error is RangeError, "error is ${error.runtimeType}"); |
| asyncEnd(); |
| } |
| ); |
| } |
| |
| main() { |
| checkError(IsolateStream.fromIterable([]), 1); |
| for (int k=1; k<10; k++) { |
| Iterable it=new Iterable.generate(k-1, |
| (int index)=>index |
| ); |
| checkError(IsolateStream.fromIterable(it), k); |
| } |
| } |
| |