blob: 26b7c5adf9992c54f90a98d59e05e3f3826e53f6 [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.
/// @assertion Uint8List asUint8List([int offsetInBytes = 0, int length ])
/// Creates a Uint8List view of a region of this byte buffer.
/// ...
/// The start index and length must describe a valid range of the buffer:
/// - offsetInBytes must not be negative,
/// - length must not be negative, and
/// - offsetInBytes + length must not be greater than lengthInBytes.
/// @description Checks that creating Uint8List view with negative offset,
/// negative length, or 'offsetInBytes + length' greater then buffer length
/// causes throwing error at runtime.
/// @author
import "dart:typed_data";
import "../../../Utils/expect.dart";
void check(ByteBuffer buffer) {
// creates Uint8List view with negative offset
Expect.throws(() {
// creates Uint8List view with negative length
Expect.throws(() {
buffer.asUint8List(1, -8);
// creates Uint8List view with length + offset greater then buffer length
Expect.throws(() {
buffer.asUint8List(1, buffer.lengthInBytes);
main() {
var list2 = new List.filled(6, 0);
var list4 = new Int32x4List(6);
check((new Int8List.fromList(list2)).buffer);
check((new Int16List.fromList(list2)).buffer);
check((new Int32List.fromList(list2)).buffer);
check((new Int64List.fromList(list2)).buffer);
check((new Int32x4List.fromList(list4)).buffer);