| // Copyright (c) 2013, 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 |
| |
| import "package:expect/expect.dart"; |
| import 'dart:async'; |
| import 'dart:convert'; |
| import 'unicode_tests.dart'; |
| import "package:async_helper/async_helper.dart"; |
| |
| Stream<List<int>> encode(String string, int chunkSize) { |
| var controller; |
| controller = new StreamController<String>(onListen: () { |
| int i = 0; |
| while (i < string.length) { |
| if (i + chunkSize <= string.length) { |
| controller.add(string.substring(i, i + chunkSize)); |
| } else { |
| controller.add(string.substring(i)); |
| } |
| i += chunkSize; |
| } |
| controller.close(); |
| }); |
| return controller.stream.transform(utf8.encoder); |
| } |
| |
| void testUnpaused(List<int> expected, Stream<List<int>> stream) { |
| asyncStart(); |
| stream.toList().then((list) { |
| var combined = []; |
| // Flatten the list. |
| list.forEach(combined.addAll); |
| Expect.listEquals(expected, combined); |
| asyncEnd(); |
| }); |
| } |
| |
| void testWithPauses(List<int> expected, Stream<List<int>> stream) { |
| asyncStart(); |
| var combined = <int>[]; |
| var sub; |
| sub = stream.listen((x) { |
| combined.addAll(x); |
| sub.pause(new Future.delayed(Duration.zero)); |
| }, onDone: () { |
| Expect.listEquals(expected, combined); |
| asyncEnd(); |
| }); |
| } |
| |
| main() { |
| for (var test in UNICODE_TESTS) { |
| var expected = test[0]; |
| var string = test[1]; |
| testUnpaused(expected, encode(string, 1)); |
| testWithPauses(expected, encode(string, 1)); |
| testUnpaused(expected, encode(string, 2)); |
| testWithPauses(expected, encode(string, 2)); |
| } |
| } |