LibTest/typed_data/ByteData/setInt16_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 void setInt16(int byteOffset, int value, [Endianness endian = Endianness.BIG_ENDIAN])
 * Sets the two bytes starting at the specified [byteOffset] in this
 * object to the two's complement binary representation of the specified
 * [value], which must fit in two bytes. In other words, [value] must lie
 * between 2<sup>15</sup> and 2<sup>15</sup> - 1, inclusive.
 * @description Checks that the value at the [offset] is set to [value].
 * @author msyabro
 */

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

main() {
  var i16 = new Int16List(16);
  var valuesToBeSet = [123, -95, -25, 98, 0, 113, -20, -9, 1, 1, 24, -25, -69, -52, -125, 31];
  var expectedBigEndian =
    [31488, -24065, -6145, 25088, 0, 28928, -4865, -2049, 256, 256, 6144, -6145, -17409, -13057, -31745, 7936];

  var byteDataFromI16 = new ByteData.view(i16.buffer);
  for(int i = 0; i < byteDataFromI16.lengthInBytes / Int16List.BYTES_PER_ELEMENT; ++i) {
    byteDataFromI16.setInt16(i * Int16List.BYTES_PER_ELEMENT, valuesToBeSet[i], Endianness.LITTLE_ENDIAN);
  }
  Expect.listEquals(valuesToBeSet, i16);

  for(int i = 0; i < byteDataFromI16.lengthInBytes / Int16List.BYTES_PER_ELEMENT; ++i) {
    byteDataFromI16.setInt16(i * Int16List.BYTES_PER_ELEMENT, valuesToBeSet[i]);
  }
  Expect.listEquals(expectedBigEndian, i16);
}