js/src/jsapi-tests/testPropCache.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: set ts=8 sts=2 et sw=2 tw=80:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "js/PropertyAndElement.h"  // JS_DefineObject
   9 #include "jsapi-tests/tests.h"
  10
  11 static int g_counter;
  12
  13 static bool CounterAdd(JSContext* cx, JS::HandleObject obj, JS::HandleId id,
  14                        JS::HandleValue v) {
  15   g_counter++;
  16   return true;
  17 }
  18
  19 static const JSClassOps CounterClassOps = {
  20     CounterAdd,  // addProperty
  21     nullptr,     // delProperty
  22     nullptr,     // enumerate
  23     nullptr,     // newEnumerate
  24     nullptr,     // resolve
  25     nullptr,     // mayResolve
  26     nullptr,     // finalize
  27     nullptr,     // call
  28     nullptr,     // construct
  29     nullptr,     // trace
  30 };
  31
  32 static const JSClass CounterClass = {
  33     "Counter", /* name */
  34     0,         /* flags */
  35     &CounterClassOps,
  36 };
  37
  38 BEGIN_TEST(testPropCache_bug505798) {
  39   g_counter = 0;
  40   EXEC("var x = {};");
  41   CHECK(JS_DefineObject(cx, global, "y", &CounterClass, JSPROP_ENUMERATE));
  42   EXEC(
  43       "var arr = [x, y];\n"
  44       "for (var i = 0; i < arr.length; i++)\n"
  45       "    arr[i].p = 1;\n");
  46   CHECK_EQUAL(g_counter, 1);
  47   return true;
  48 }
  49 END_TEST(testPropCache_bug505798)