JSTests/test262/test/built-ins/TypedArrayConstructors/of/nan-conversion.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%.of
description: >
  Test NaN conversions
info: |
  IntegerIndexedElementSet ( O, index, value )

  Assert: O is an Integer-Indexed exotic object.
  If O.[[ContentType]] is BigInt, let numValue be ? ToBigInt(value).
  Otherwise, let numValue be ? ToNumber(value).
  Let buffer be O.[[ViewedArrayBuffer]].
  If IsDetachedBuffer(buffer) is false and ! IsValidIntegerIndex(O, index) is true, then
    Let offset be O.[[ByteOffset]].
    Let arrayTypeName be the String value of O.[[TypedArrayName]].
    Let elementSize be the Element Size value specified in Table 62 for arrayTypeName.
    Let indexedPosition be (ℝ(index) × elementSize) + offset.
    Let elementType be the Element Type value in Table 62 for arrayTypeName.
    Perform SetValueInBuffer(buffer, indexedPosition, elementType, numValue, true, Unordered).
  Return NormalCompletion(undefined).

  24.1.1.6 SetValueInBuffer ( arrayBuffer, byteIndex, type, value [ ,
  isLittleEndian ] )
includes: [testTypedArray.js]
features: [TypedArray]
---*/

testWithTypedArrayConstructors(function(TA) {
  var result = TA.of(NaN, undefined);
  assert.sameValue(result.length, 2);
  assert.sameValue(result[0], NaN);
  assert.sameValue(result[1], NaN);
  assert.sameValue(result.constructor, TA);
  assert.sameValue(Object.getPrototypeOf(result), TA.prototype);
},
[
  Float32Array,
  Float64Array
]);

testWithTypedArrayConstructors(function(TA) {
  var result = TA.of(NaN, undefined);
  assert.sameValue(result.length, 2);
  assert.sameValue(result[0], 0);
  assert.sameValue(result[1], 0);
  assert.sameValue(result.constructor, TA);
  assert.sameValue(Object.getPrototypeOf(result), TA.prototype);
},
[
  Int8Array,
  Int32Array,
  Int16Array,
  Int8Array,
  Uint32Array,
  Uint16Array,
  Uint8Array,
  Uint8ClampedArray
]);