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// Copyright (C) 2017 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-array.prototype.unshift
description: >
Length values exceeding 2^53-1 are clamped to 2^53-1.
info: |
1. ...
2. Let len be ? ToLength(? Get(O, "length")).
3. Let argCount be the number of actual arguments.
4. If argCount > 0, then ...
5. Perform ? Set(O, "length", len+argCount, true).
features: [exponentiation]
---*/
var arrayLike = {};
arrayLike.length = 2 ** 53 - 1;
Array.prototype.unshift.call(arrayLike);
assert.sameValue(arrayLike.length, 2 ** 53 - 1, "Length is 2**53 - 1");
arrayLike.length = 2 ** 53;
Array.prototype.unshift.call(arrayLike);
assert.sameValue(arrayLike.length, 2 ** 53 - 1, "Length is 2**53");
arrayLike.length = 2 ** 53 + 2;
Array.prototype.unshift.call(arrayLike);
assert.sameValue(arrayLike.length, 2 ** 53 - 1, "Length is 2**53 + 2");
arrayLike.length = Infinity;
Array.prototype.unshift.call(arrayLike);
assert.sameValue(arrayLike.length, 2 ** 53 - 1, "Length is Infinity");
reportCompare(0, 0);
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