jdk8-mips64-public/nashorn: test/script/basic/nonextensible_proto

8024120: Setting __proto__ to null removes the __proto__ property
Reviewed-by: lagergren, attila

     1 /*

     2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /**

    25  * JDK-8023368: Instance __proto__ property should exist and be writable.

    26  *

    27  * @test

    28  * @run

    29  */

    31 // check that we cannot assign to __proto__ of a non-extensible object

    32 try {

    33     var obj = {}

    34     Object.preventExtensions(obj);

    35     obj.__proto__ = { };

    36     fail("Should have thrown TypeError");

    37 } catch (e) {

    38     if (! (e instanceof TypeError)) {

    39         fail("Expected TypeError, got " + e);

    40     }

    41     print(e);

    42 }

test/script/basic/nonextensible_proto_assign.js@b5ff11e00050