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// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-String.prototype.at
description: >
The method should return an Iterator instance.
info: |
String.prototype.at ( )
Let O be ? ToObject(this value).
Let len be ? LengthOfStringLike(O).
Let relativeIndex be ? ToInteger(index).
If relativeIndex ≥ 0, then
Let k be relativeIndex.
Else,
Let k be len + relativeIndex.
If k < 0 or k ≥ len, then return undefined.
Return ? Get(O, ! ToString(k)).
features: [String.prototype.at]
---*/
assert.sameValue(typeof String.prototype.at, 'function');
let s = "12\uD80034";
assert.sameValue(s.at(0), "1", 's.at(0) must return "1"');
assert.sameValue(s.at(1), "2", 's.at(1) must return "2"');
assert.sameValue(s.at(2), "\uD800", 's.at(2) must return "\\uD800"');
assert.sameValue(s.at(3), "3", 's.at(3) must return "3"');
assert.sameValue(s.at(4), "4", 's.at(4) must return "4"');
reportCompare(0, 0);
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