LibTest/typed_data/Uint8List/Uint8List.view_A01_t01.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.

/// @assertion
/// Uint8List.view(
///     ByteBuffer buffer, [
///     int byteOffset = 0,
///     int length
/// ])
/// Creates an [Uint8List] view of the specified region in buffer.
/// @description Checks that an instance of Uint8List is created.
/// @author msyabro

import "dart:typed_data";
import "../../../Utils/expect.dart";

void check(List<int> array, int offset, int length) {
  var tmp = new Uint8List.fromList(array);
  var byteBuffer = tmp.buffer;
  var l = new Uint8List.view(byteBuffer, offset, length);
  Expect.isTrue(l is Uint8List);
  Expect.runtimeIsType<Uint8List>(l);
}

main() {
  check([], 0, 0);
  check([255, 128], 0, 2);
  check([1000, 1000, 1000], 0, 3);
  check([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17], 0, 18);
  check([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17], 5, 13);
  check([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17], 17, 1);
}