blob: dc8b94380f87bed25660cf973b416e69d5c8e734 [file] [log] [blame]
// Copyright (c) 2017, 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
/// Future<RandomAccessFile> writeFrom(
/// List<int> buffer, [
/// int start = 0,
/// int end
/// ])
/// Writes from a List<int> to the file. It will read the buffer from index start
/// to index end. If start is omitted, it'll start from index 0. If end is
/// omitted, it will write to end of buffer.
///
/// @description Checks that method writeFrom writes from a List<int> to file
/// from index start to index end and if end is omitted, it writes to end of
/// buffer.
/// @author ngl@unipro.ru
import "dart:async";
import "dart:io";
import "../../../Utils/expect.dart";
import "../file_utils.dart";
void check(int start) {
List<int> list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9];
int len = list.length - start;
File file = getTempFileSync();
asyncStart();
Future<RandomAccessFile> raFile = file.open(mode: FileMode.write);
raFile.then((RandomAccessFile rf) {
Expect.equals(0, file.lengthSync());
var f = rf.writeFrom(list, start);
f.then((RandomAccessFile file) {
Expect.equals(len, file.lengthSync());
rf.setPositionSync(0);
List<int> l = file.readSync(len);
for (int i = 0; i < len; i++) {
Expect.isTrue(i + start == l[i]);
}
asyncEnd();
}).whenComplete(() {
rf.closeSync();
file.deleteSync();
});
});
}
main() {
for (int i = 0; i < 11; i++) {
check(i);
}
}