blob: 10424b7c55550d9754d28b36eae6fe1344a59068 [file] [log] [blame]
// 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));
}
}