| // Copyright (c) 2014, 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. |
| |
| library handle_error_test; |
| |
| import "dart:isolate"; |
| import "dart:async"; |
| import "package:async_helper/async_helper.dart"; |
| import "package:expect/expect.dart"; |
| |
| isomain1(replyPort) { |
| RawReceivePort port = new RawReceivePort(); |
| port.handler = (v) { |
| switch (v) { |
| case 0: |
| replyPort.send(42); |
| break; |
| case 1: |
| throw new ArgumentError("whoops"); |
| case 2: |
| throw new RangeError.value(37); |
| case 3: |
| port.close(); |
| } |
| }; |
| replyPort.send(port.sendPort); |
| } |
| |
| /// Do Isolate.spawn(entry) and get a sendPort from the isolate that it |
| /// expects commands on. |
| /// The isolate has errors set to non-fatal. |
| /// Returns a list of `[isolate, commandPort]` in a future. |
| Future spawn(entry) { |
| ReceivePort reply = new ReceivePort(); |
| Future isolate = Isolate.spawn(entry, reply.sendPort, paused: true); |
| return isolate.then((Isolate isolate) { |
| isolate.setErrorsFatal(false); |
| isolate.resume(isolate.pauseCapability); |
| Future result = reply.first.then((sendPort) { |
| return [isolate, sendPort]; |
| }); |
| return result; |
| }); |
| } |
| |
| main() { |
| asyncStart(); |
| RawReceivePort reply = new RawReceivePort(null); |
| // Create two isolates waiting for commands, with errors non-fatal. |
| Future iso1 = spawn(isomain1); |
| Future iso2 = spawn(isomain1); |
| Future.wait([iso1, iso2]).then((l) { |
| var isolate1 = l[0][0]; |
| var sendPort1 = l[0][1]; |
| var isolate2 = l[1][0]; |
| var sendPort2 = l[1][1]; |
| Stream errors = isolate1.errors; // Broadcast stream, never a done message. |
| int state = 1; |
| var subscription; |
| subscription = errors.listen(null, onError: (error, stack) { |
| switch (state) { |
| case 1: |
| Expect.equals(new ArgumentError("whoops").toString(), "$error"); |
| state++; |
| break; |
| case 2: |
| Expect.equals(new RangeError.value(37).toString(), "$error"); |
| state++; |
| reply.close(); |
| subscription.cancel(); |
| asyncEnd(); |
| break; |
| default: |
| throw "Bad state for error: $state: $error"; |
| } |
| }); |
| sendPort1.send(0); |
| sendPort2.send(0); |
| sendPort1.send(1); |
| sendPort2.send(1); |
| sendPort1.send(2); |
| sendPort2.send(2); |
| sendPort1.send(3); |
| sendPort2.send(3); |
| }); |
| } |