/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

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

 *

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

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

 * published by the Free Software Foundation.

 *

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

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

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

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

 * accompanied this code).

 *

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

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

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

 *

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

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

 * questions.

 */

/**

 * JDK-8044520: Nashorn cannot execute node.js's express module

 *

 * @test

 * @run

 */

function checkNullProto() {

    var obj = {};

    obj.__proto__ = null;

    var proto = Object.getPrototypeOf(obj);

    if (typeof proto != 'object' || proto !== null) {

        fail("__proto__ can't be set to null!");

    }

}

checkNullProto();

function checkSetProto(proto) {

    var obj = {};

    obj.__proto__ = proto;

    if (Object.getPrototypeOf(obj) !== Object.prototype) {

        fail("obj.__proto__ set not ignored for " + proto);

    }

}

checkSetProto(undefined);

checkSetProto(42);

checkSetProto(false);

checkSetProto("hello");

function checkLiteralSetProto(proto) {

    var obj = { __proto__: proto };

    if (obj.__proto__ !== Object.prototype) {

        fail("object literal _proto__ set not ignored for " + proto);

    }

}

checkLiteralSetProto(undefined);

checkLiteralSetProto(34);

checkLiteralSetProto(true);

checkLiteralSetProto("world");

function checkNullProtoFromLiteral() {

    var obj = { __proto__: null };

    var proto = Object.getPrototypeOf(obj);

    if (typeof proto != 'object' || proto !== null) {

        fail("__proto__ can't be set to null!");

    }

}

checkNullProtoFromLiteral();

function checkSetPrototypeOf(proto) {

    try {

        Object.setPrototypeOf({}, proto);

        fail("should have thrown error for " + proto);

    } catch (e) {

        if (! (e instanceof TypeError)) {

            fail("should have thrown TypeError, got " + e);

        }

    }

}

checkSetPrototypeOf(undefined);

checkSetPrototypeOf(43);

checkSetPrototypeOf(false);

checkSetPrototypeOf("nashorn");

function checkNullSetPrototypeOf() {

    var obj = { };

    Object.setPrototypeOf(obj, null);

    var proto = Object.getPrototypeOf(obj);

    if (typeof proto != 'object' || proto !== null) {

        fail("__proto__ can't be set to null!");

    }

}

checkNullSetPrototypeOf();

var desc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__");

function checkProtoGetterOnPrimitive(value) {

    // call __proto__ getter on primitive - check ToObject

    // is called on 'this' value as per draft spec

    if (desc.get.call(value) !== Object(value).__proto__) {

        fail("can't call __proto__ getter on " + value);

    }

}

checkProtoGetterOnPrimitive(32);

checkProtoGetterOnPrimitive(false);

checkProtoGetterOnPrimitive("great!");

function checkProtoSetterOnNonObjectThis(self) {

    try {

        desc.set.call(self);

        fail("should have thrown TypeError");

    } catch (e) {

        if (! (e instanceof TypeError)) {

            fail("should throw TypeError on non-object self, got " +e);

        }

    }

}

checkProtoSetterOnNonObjectThis(undefined);

checkProtoSetterOnNonObjectThis(null);

function checkProtoSetterReturnValue(obj, p) {

    if (typeof desc.set.call(obj, p) != "undefined") {

        fail("__proto__ setter does not return undefined: " + obj + " " + p);

    }

}

// try non-object 'this'. setter is expected to return undefined.

checkProtoSetterReturnValue(23);

checkProtoSetterReturnValue(false);

checkProtoSetterReturnValue("foo");

// set proper __proto__. Still return value is undefined.

checkProtoSetterReturnValue({}, {});

checkProtoSetterReturnValue({}, null);