js/src/jsapi-tests/testWindowNonConfigurable.cpp
author Tom Schuster <evilpies@gmail.com>
Tue, 27 Nov 2018 11:38:40 +0000
changeset 448242 6b2aceb0979a49dbcce80db1b59ef8238bd0d2b8
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1496475 - JSAPI test. r=jorendorff Depends on D12948 Differential Revision: https://phabricator.services.mozilla.com/D12949

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "jsapi-tests/tests.h"

static bool
windowProxy_defineProperty(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
                           JS::Handle<JS::PropertyDescriptor> desc,
                           JS::ObjectOpResult& result)
{
    if (desc.hasConfigurable() && !desc.configurable()) {
        result.failCantDefineWindowNonConfigurable();
        return true;
    }

    return NativeDefineProperty(cx, obj.as<js::NativeObject>(), id, desc, result);
}

static const js::ObjectOps windowProxy_objectOps = {
    nullptr,
    windowProxy_defineProperty
};

static const js::Class windowProxy_class = {
    "WindowProxy",
    0,
    nullptr,
    nullptr,
    nullptr,
    &windowProxy_objectOps
};

BEGIN_TEST(testWindowNonConfigurable)
{
    JS::RootedObject obj(cx, JS_NewObject(cx, Jsvalify(&windowProxy_class)));
    CHECK(obj);
    CHECK(JS_DefineProperty(cx, global, "windowProxy", obj, 0));
    JS::RootedValue v(cx);
    EVAL("Object.defineProperty(windowProxy, 'bar', {value: 1, configurable: false})", &v);
    CHECK(v.isFalse()); // This is the important bit!
    EVAL("Object.defineProperty(windowProxy, 'bar', {value: 1, configurable: true})", &v);
    CHECK(&v.toObject() == obj);
    EVAL("Reflect.defineProperty(windowProxy, 'foo', {value: 1, configurable: false})", &v);
    CHECK(v.isFalse());
    EVAL("Reflect.defineProperty(windowProxy, 'foo', {value: 1, configurable: true})", &v);
    CHECK(v.isTrue());

    return true;
}
END_TEST(testWindowNonConfigurable)