tests/lib/typed_data/setRange_lib.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.

library setRange_lib;

import 'dart:typed_data';
import 'package:expect/expect.dart';

initialize(a) {
  for (int i = 0; i < a.length; i++) {
    a[i] = i + 1;
  }
}

makeInt16View(buffer, byteOffset, length) =>
    new Int16List.view(buffer, byteOffset, length);

makeUint16View(buffer, byteOffset, length) =>
    new Uint16List.view(buffer, byteOffset, length);

makeInt16List(length) => new Int16List(length);
makeUint16List(length) => new Uint16List(length);

checkSameSize(constructor0, constructor1, constructor2) {
  // Typed lists a1 and a2 share a buffer as follows (bytes):
  //
  //  a0:  aabbccddeeffgghhii
  //  a1:  aabbccddeeffgg
  //  a2:      aabbccddeeffgg

  var a0 = constructor0(9);
  var buffer = a0.buffer;
  var a1 = constructor1(buffer, 0, 7);
  var a2 = constructor2(buffer, 2 * a0.elementSizeInBytes, 7);

  initialize(a0);
  Expect.equals('[1, 2, 3, 4, 5, 6, 7, 8, 9]', '$a0');
  Expect.equals('[1, 2, 3, 4, 5, 6, 7]', '$a1');
  Expect.equals('[3, 4, 5, 6, 7, 8, 9]', '$a2');

  initialize(a0);
  a1.setRange(0, 7, a2);
  Expect.equals('[3, 4, 5, 6, 7, 8, 9, 8, 9]', '$a0');

  initialize(a0);
  a2.setRange(0, 7, a1);
  Expect.equals('[1, 2, 1, 2, 3, 4, 5, 6, 7]', '$a0');

  initialize(a0);
  a1.setRange(1, 7, a2);
  Expect.equals('[1, 3, 4, 5, 6, 7, 8, 8, 9]', '$a0');

  initialize(a0);
  a2.setRange(1, 7, a1);
  Expect.equals('[1, 2, 3, 1, 2, 3, 4, 5, 6]', '$a0');

  initialize(a0);
  a1.setRange(0, 6, a2, 1);
  Expect.equals('[4, 5, 6, 7, 8, 9, 7, 8, 9]', '$a0');

  initialize(a0);
  a2.setRange(0, 6, a1, 1);
  Expect.equals('[1, 2, 2, 3, 4, 5, 6, 7, 9]', '$a0');
}