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// Copyright (C) 2017 Caio Lima. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Mapped arguments property descriptor change to non-configurable, non-enumerable and non-writable
info: |
Change the descriptor using [[DefineOwnProperty]] to
{configurable: false, enumerable: false}, set a = 2 and then
change property descriptor to {writable: false}. The descriptor's enumerable
property need to be the one set before the mapping removal.
flags: [noStrict]
esid: sec-arguments-exotic-objects-defineownproperty-p-desc
includes: [propertyHelper.js]
---*/
function fn(a) {
Object.defineProperty(arguments, "0", {configurable: false, enumerable: false});
a = 2;
Object.defineProperty(arguments, "0", {writable: false});
let propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
assert.sameValue(propertyDescriptor.value, 2);
verifyNotEnumerable(arguments, "0");
verifyNotWritable(arguments, "0");
verifyNotConfigurable(arguments, "0");
// Postcondition: Arguments mapping is removed.
a = 3;
propertyDescriptor = Object.getOwnPropertyDescriptor(arguments, "0");
assert.sameValue(propertyDescriptor.value, 2);
verifyNotEnumerable(arguments, "0");
verifyNotWritable(arguments, "0");
verifyNotConfigurable(arguments, "0");
}
fn(1);
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