LibTest/typed_data/ByteData/setInt64_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 setInt64(int byteOffset, int value, [Endianness endian = Endianness.BIG_ENDIAN])
 * Sets the eight bytes starting at the specified [byteOffset] in this
 * object to the two's complement binary representation of the specified
 * [value], which must fit in eight bytes. In other words, [value] must lie
 * between 2<sup>63</sup> and 2<sup>63</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 i64 = new Int64List(16);
  var valuesToBeSet = [123, -95, -25, 98, 0, 113, -20, -9, 1, 9223372036854775807, -9223372036854775808, -25, -69, -52, -125, 31];
  var expectedBigEndian =
  [8863084066665136128, -6773413839565225985, -1729382256910270465, 7061644215716937728, 0, 8142508126285856768,
  -1369094286720630785, -576460752303423489, 72057594037927936, -129, 128, -1729382256910270465, -4899916394579099649,
  -3674937295934324737, -8935141660703064065, 2233785415175766016];

  var byteDataFromI64 = new ByteData.view(i64.buffer);
  for(int i = 0; i < byteDataFromI64.lengthInBytes / Int64List.BYTES_PER_ELEMENT; ++i) {
    byteDataFromI64.setInt64(i * Int64List.BYTES_PER_ELEMENT, valuesToBeSet[i], Endianness.LITTLE_ENDIAN);
  }
  Expect.listEquals(valuesToBeSet, i64);

  for(int i = 0; i < byteDataFromI64.lengthInBytes / Int64List.BYTES_PER_ELEMENT; ++i) {
    byteDataFromI64.setInt64(i * Int64List.BYTES_PER_ELEMENT, valuesToBeSet[i]);
  }
  Expect.listEquals(expectedBigEndian, i64);
}