| /* |
| * 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 catchError(Function onError, {bool test(Object error)}) |
| * If this future completes with an error, then test is first called with |
| * the error value. |
| * If test returns false, the exception is not handled by this catchError, |
| * and the returned future completes with the same error and stack trace as |
| * this future. |
| * If test returns true, onError is called with the error and possibly stack |
| * trace, and the returned future is completed with the result of this call in |
| * exactly the same way as for then's onError. |
| * If test is omitted, it defaults to a function that always returns true. |
| * The test function should not throw, but if it does, it is handled as if |
| * the onError function had thrown. |
| * @description Checks that it is a runtime error if [onError] callback has more |
| * than two parameters. |
| * @author ilya |
| */ |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| f() { |
| // In strong mode, registering incompatible callback is synchronous error, |
| // future ends up with no error handler that will lead to async exception |
| // with error object equal to 1. |
| Expect.throws(() => new Future.error(1).catchError((x, y, z) {})); |
| } |
| |
| main() { |
| asyncStart(); |
| runZoned(f, onError: (e) { |
| Expect.equals(1, e); |
| asyncEnd(); |
| }); |
| } |