test/built-ins/Object/defineProperties/15.2.3.7-6-a-294.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.7-6-a-294
description: >
    Object.defineProperties - 'O' is an Arguments object, 'P' is an
    array index named data property of 'O' but not defined in
    [[ParameterMap]] of 'O', test TypeError is thrown when updating
    the [[Value]] attribute value of 'P' which is not writable and not
    configurable (10.6 [[DefineOwnProperty]] step 4)
includes: [propertyHelper.js]
---*/


var arg;

(function fun() {
    arg = arguments;
}());

Object.defineProperty(arg, "0", {
    value: 0,
    writable: false,
    configurable: false
});

try {
    Object.defineProperties(arg, {
        "0": {
            value: 10
        }
    });

    $ERROR("Expected an exception.");
} catch (e) {
    verifyEqualTo(arg, "0", 0);

    verifyNotWritable(arg, "0");

    verifyNotEnumerable(arg, "0");

    verifyNotConfigurable(arg, "0");

    if (!(e instanceof TypeError)) {
        $ERROR("Expected TypeError, got " + e);
    }

}