| // 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<String> decode(List<int> bytes, int chunkSize) { |
| var controller; |
| controller = new StreamController<List<int>>(onListen: () { |
| int i = 0; |
| while (i < bytes.length) { |
| List nextChunk = <int>[]; |
| for (int j = 0; j < chunkSize; j++) { |
| if (i < bytes.length) { |
| nextChunk.add(bytes[i]); |
| i++; |
| } |
| } |
| controller.add(nextChunk); |
| } |
| controller.close(); |
| }); |
| return controller.stream.transform(utf8.decoder); |
| } |
| |
| testUnpaused(String expected, Stream stream) { |
| asyncStart(); |
| stream.toList().then((list) { |
| StringBuffer buffer = new StringBuffer(); |
| buffer.writeAll(list); |
| Expect.stringEquals(expected, buffer.toString()); |
| asyncEnd(); |
| }); |
| } |
| |
| testWithPauses(String expected, Stream stream) { |
| asyncStart(); |
| StringBuffer buffer = new StringBuffer(); |
| var sub; |
| sub = stream.listen((x) { |
| buffer.write(x); |
| sub.pause(new Future.delayed(Duration.zero)); |
| }, onDone: () { |
| Expect.stringEquals(expected, buffer.toString()); |
| asyncEnd(); |
| }); |
| } |
| |
| main() { |
| for (var test in UNICODE_TESTS) { |
| var bytes = test[0]; |
| var expected = test[1]; |
| testUnpaused(expected, decode(bytes, 1)); |
| testWithPauses(expected, decode(bytes, 1)); |
| testUnpaused(expected, decode(bytes, 2)); |
| testWithPauses(expected, decode(bytes, 2)); |
| testUnpaused(expected, decode(bytes, 3)); |
| testWithPauses(expected, decode(bytes, 3)); |
| testUnpaused(expected, decode(bytes, 4)); |
| testWithPauses(expected, decode(bytes, 4)); |
| } |
| } |