testSetProperty.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-

 * vim: set ts=8 sts=2 et sw=2 tw=80:

*/

/* 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 "js/Object.h"              // JS::GetClass

#include "js/PropertyAndElement.h"  // JS_DefineProperty

#include "jsapi-tests/tests.h"

BEGIN_TEST(testSetProperty_InheritedGlobalSetter) {

  // This is a JSAPI test because jsapi-test globals can be set up to not have

  // a resolve hook and therefore can use the property cache in some cases

  // where the shell can't.

  MOZ_RELEASE_ASSERT(!JS::GetClass(global)->getResolve());

  CHECK(JS::InitRealmStandardClasses(cx));

  CHECK(JS_DefineProperty(cx, global, "HOTLOOP", 8, 0));

  EXEC(

      "var n = 0;\n"

      "var global = this;\n"

      "function f() { n++; }\n"

      "Object.defineProperty(Object.prototype, 'x', {set: f});\n"

      "for (var i = 0; i < HOTLOOP; i++)\n"

      "    global.x = i;\n");

  EXEC(

      "if (n != HOTLOOP)\n"

      "    throw 'FAIL';\n");

  return true;

const JSClass* getGlobalClass(void) override {

  static const JSClassOps noResolveGlobalClassOps = {

      nullptr,                   // addProperty

      nullptr,                   // delProperty

      nullptr,                   // enumerate

      nullptr,                   // newEnumerate

      nullptr,                   // resolve

      nullptr,                   // mayResolve

      nullptr,                   // finalize

      nullptr,                   // call

      nullptr,                   // construct

      JS_GlobalObjectTraceHook,  // trace

};

  static const JSClass noResolveGlobalClass = {

      "testSetProperty_InheritedGlobalSetter_noResolveGlobalClass",

      JSCLASS_GLOBAL_FLAGS, &noResolveGlobalClassOps};

  return &noResolveGlobalClass;

END_TEST(testSetProperty_InheritedGlobalSetter)