JSTests/test262/test/built-ins/TypedArray/prototype/forEach/callbackfn-arguments-with-thisarg.js

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%typedarray%.prototype.foreach
description: >
  thisArg does not affect callbackfn arguments
info: |
  22.2.3.12 %TypedArray%.prototype.forEach ( callbackfn [ , thisArg ] )

  %TypedArray%.prototype.forEach is a distinct function that implements the same
  algorithm as Array.prototype.forEach as defined in 22.1.3.10 except that the
  this object's [[ArrayLength]] internal slot is accessed in place of performing
  a [[Get]] of "length"

  22.1.3.10 Array.prototype.forEach ( callbackfn [ , thisArg ] )

  ...
  6. Repeat, while k < len
    ...
    c. If kPresent is true, then
      i. Let kValue be ? Get(O, Pk).
      ii. Perform ? Call(callbackfn, T, « kValue, k, O »).
  ...
includes: [testTypedArray.js]
features: [TypedArray]
---*/

testWithTypedArrayConstructors(function(TA) {
  var sample = new TA([42, 43, 44]);

  var results = [];
  var thisArg = ["test262", 0, "ecma262", 0];

  sample.forEach(function() {
    results.push(arguments);
  }, thisArg);

  assert.sameValue(results.length, 3, "results.length");
  assert.sameValue(thisArg.length, 4, "thisArg.length");

  assert.sameValue(results[0].length, 3, "results[0].length");
  assert.sameValue(results[0][0], 42, "results[0][0] - kValue");
  assert.sameValue(results[0][1], 0, "results[0][1] - k");
  assert.sameValue(results[0][2], sample, "results[0][2] - this");

  assert.sameValue(results[1].length, 3, "results[1].length");
  assert.sameValue(results[1][0], 43, "results[1][0] - kValue");
  assert.sameValue(results[1][1], 1, "results[1][1] - k");
  assert.sameValue(results[1][2], sample, "results[1][2] - this");

  assert.sameValue(results[2].length, 3, "results[2].length");
  assert.sameValue(results[2][0], 44, "results[2][0] - kValue");
  assert.sameValue(results[2][1], 2, "results[2][1] - k");
  assert.sameValue(results[2][2], sample, "results[2][2] - this");
});