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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-array.prototype.at
description: >
Property type and descriptor.
info: |
Array.prototype.at( index )
Let relativeIndex be ? ToInteger(index).
features: [Array.prototype.at]
---*/
assert.sameValue(
typeof Array.prototype.at,
'function',
'The value of `typeof Array.prototype.at` is expected to be "function"'
);
let valueOfCallCount = 0;
let index = {
valueOf() {
valueOfCallCount++;
return 1;
}
};
let a = [0,1,2,3];
assert.sameValue(a.at(index), 1, 'a.at({valueOf() {valueOfCallCount++; return 1;}}) must return 1');
assert.sameValue(valueOfCallCount, 1, 'The value of valueOfCallCount is expected to be 1');
reportCompare(0, 0);
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