js/src/tests/test262/built-ins/Array/prototype/copyWithin/return-abrupt-from-this-length-as-symbol.js


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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.copywithin
description: >
  Return abrupt from ToLength(Get(O, "length")) where length is a Symbol.
info: |
  22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] )

  1. Let O be ToObject(this value).
  2. ReturnIfAbrupt(O).
  3. Let len be ToLength(Get(O, "length")).
  4. ReturnIfAbrupt(len).
features: [Symbol]
---*/

var o = {};

o.length = Symbol(1);

// value argument is given to avoid false positives
assert.throws(TypeError, function() {
  [].copyWithin.call(o, 0, 0);
});

reportCompare(0, 0);