JSTests/test262/test/built-ins/Object/defineProperty/15.2.3.6-4-300-1.js

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

/*---
es5id: 15.2.3.6-4-300-1
description: >
    Object.defineProperty - 'O' is an Arguments object of a function
    that has formal parameters, 'name' is own accessor property of 'O'
    which is also defined in [[ParameterMap]] of 'O', test TypeError
    is thrown when updating the [[Configurable]] attribute value of
    'name' which is defined as non-configurable (10.6
    [[DefineOwnProperty]] step 4 and step 5a)
includes: [propertyHelper.js]
---*/

(function (a, b, c) {
    function getFunc() {
        return 0;
    }
    Object.defineProperty(arguments, "0", {
        get: getFunc,
        enumerable: true,
        configurable: false
    });
    try {
        Object.defineProperty(arguments, "0", {
            configurable: true
        });
        $ERROR("Expected an exception.");
    } catch (e) {
        if (a !== 0) {
            $ERROR('Expected a === 0, actually ' + a);
        }
        verifyEqualTo(arguments, "0", getFunc());

        verifyEnumerable(arguments, "0");

        verifyNotConfigurable(arguments, "0");

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

    }
}(0, 1, 2));