dart-sdk/tests/lib/convert/chunked_conversion_utf8_test.dart
Robert Nystrom b05a57d5f3 Migrate tests/lib_2/convert -> tests/lib/convert.
Change-Id: I04e64359acb95c63d1b5dc5c7fdfaadcb6c55fd9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/130965
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
2020-01-16 17:46:02 +00:00

38 lines
1.1 KiB
Dart

// 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.
import "package:expect/expect.dart";
import 'dart:convert';
import 'unicode_tests.dart';
String decode(List<int> bytes, int chunkSize) {
StringBuffer buffer = new StringBuffer();
var stringSink = new StringConversionSink.fromStringSink(buffer);
var byteSink = new Utf8Decoder().startChunkedConversion(stringSink);
int i = 0;
while (i < bytes.length) {
var nextChunk = <int>[];
for (int j = 0; j < chunkSize; j++) {
if (i < bytes.length) {
nextChunk.add(bytes[i]);
i++;
}
}
byteSink.add(nextChunk);
}
byteSink.close();
return buffer.toString();
}
main() {
for (var test in UNICODE_TESTS) {
var bytes = test[0];
var expected = test[1];
Expect.stringEquals(expected, decode(bytes, 1));
Expect.stringEquals(expected, decode(bytes, 2));
Expect.stringEquals(expected, decode(bytes, 3));
Expect.stringEquals(expected, decode(bytes, 4));
}
}