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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*/
/* 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 "jsfriendapi.h"
#include "jsapi-tests/tests.h"
#include "vm/EnvironmentObject.h"
BEGIN_TEST(testForceLexicalInitialization)
{
// Attach an uninitialized lexical to a scope and ensure that it's
// set to undefined
js::RootedGlobalObject g(cx, cx->global());
JS::Rooted<js::LexicalEnvironmentObject*> env(
cx, js::LexicalEnvironmentObject::createGlobal(cx, g));
JS::RootedValue uninitialized(cx, JS::MagicValue(JS_UNINITIALIZED_LEXICAL));
js::RootedPropertyName name(cx, Atomize(cx, "foopi", 4)->asPropertyName());
JS::RootedId id(cx, NameToId(name));
unsigned attrs = JSPROP_ENUMERATE | JSPROP_PERMANENT;
CHECK(NativeDefineProperty(cx, env, id, uninitialized, nullptr, nullptr, attrs));
// Verify that "foopi" is uninitialized
const JS::Value v = env->getSlot(env->lookup(cx, id)->slot());
CHECK(v.isMagic(JS_UNINITIALIZED_LEXICAL));
ForceLexicalInitialization(cx, env);
// Verify that "foopi" has been initialized to undefined
const JS::Value v2 = env->getSlot(env->lookup(cx, id)->slot());
CHECK(v2.isUndefined());
return true;
}
END_TEST(testForceLexicalInitialization)
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