js/src/tests/test262/built-ins/ArrayBuffer/isView/arg-is-typedarray-subclass-instance.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

// 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-arraybuffer.isview
description: >
  Return true if arg is an instance from a subclass of TypedArray
info: |
  24.1.3.1 ArrayBuffer.isView ( arg )

  1. If Type(arg) is not Object, return false.
  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
  3. Return false.
features: [class, TypedArray]
includes: [testTypedArray.js]
---*/

testWithTypedArrayConstructors(function(ctor) {
  class TA extends ctor {}

  var sample = new TA();

  assert(ArrayBuffer.isView(sample));
});

reportCompare(0, 0);