| // Copyright (c) 2018, 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion Stream<S> map<S>(S convert(T event)) |
| /// Creates a new stream that converts each element of this stream to a new value |
| /// using the convert function. |
| /// . . . |
| /// If convert throws, the returned stream reports the exception as an error |
| /// event instead. |
| /// |
| /// Error and done events are passed through unchanged to the returned stream. |
| /// |
| /// @description Checks that if convert throws, the returned stream reports the |
| /// exception as an error event instead. |
| /// @author ngl@unipro.ru |
| |
| import "dart:io"; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| check(convert(event), List expected, int dExpected, int eExpected) { |
| asyncStart(); |
| var address = InternetAddress.loopbackIPv4; |
| RawDatagramSocket.bind(address, 0).then((producer) { |
| RawDatagramSocket.bind(address, 0).then((receiver) { |
| int sent = 0; |
| int counter = 0; |
| int errCounter = 0; |
| List list = []; |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.send([sent++], address, receiver.port); |
| producer.close(); |
| |
| new Timer(const Duration(milliseconds: 200), () { |
| Expect.isNull(receiver.receive()); |
| receiver.close(); |
| }); |
| |
| Stream stream = receiver.map(convert); |
| stream.listen((event) { |
| list.add(event); |
| receiver.receive(); |
| counter++; |
| }, onError: (error) { |
| errCounter++; |
| list.add(error); |
| receiver.receive(); |
| }, onDone: () { |
| Expect.equals(dExpected, counter); |
| Expect.equals(eExpected, errCounter); |
| Expect.listEquals(expected, list); |
| asyncEnd(); |
| }); |
| }); |
| }); |
| } |
| |
| main() { |
| check( |
| (e) => e == RawSocketEvent.write ? throw 1 : e, |
| [1, RawSocketEvent.read, RawSocketEvent.read, RawSocketEvent.closed], |
| 3, |
| 1); |
| check((e) => e == RawSocketEvent.read ? throw 2 : e, |
| [RawSocketEvent.write, 2, 2, RawSocketEvent.closed], 2, 2); |
| check( |
| (e) => e == RawSocketEvent.closed ? throw 3 : e, |
| [RawSocketEvent.write, RawSocketEvent.read, RawSocketEvent.read, 3], |
| 3, |
| 1); |
| } |