mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
27 lines
924 B
JavaScript
27 lines
924 B
JavaScript
// Copyright (C) 2015 André Bargull. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
info: Mapped arguments object with non-configurable property
|
|
description: >
|
|
Mapping works when property is non-configurable, arguments property
|
|
was not deleted. [[Delete]] operations throws TypeError if called
|
|
from strict-mode code. Variable is changed with SetMutableBinding.
|
|
flags: [noStrict]
|
|
---*/
|
|
|
|
function argumentsAndStrictDeleteSetMutableBinding(a) {
|
|
Object.defineProperty(arguments, "0", {configurable: false});
|
|
|
|
// Precondition: Delete is unsuccessful and doesn't affect mapping.
|
|
var args = arguments;
|
|
assert.throws(TypeError, function() { "use strict"; delete args[0]; });
|
|
assert.sameValue(a, 1);
|
|
assert.sameValue(arguments[0], 1);
|
|
|
|
a = 2;
|
|
assert.sameValue(a, 2);
|
|
assert.sameValue(arguments[0], 2);
|
|
}
|
|
argumentsAndStrictDeleteSetMutableBinding(1);
|