js/src/jsapi-tests/testGetPropertyDescriptor.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "js/CallAndConstruct.h"  // JS::IsCallable
   6 #include "js/PropertyAndElement.h"
   7 #include "js/PropertyDescriptor.h"  // JS::FromPropertyDescriptor, JS_GetPropertyDescriptor
   8 #include "js/RootingAPI.h"
   9 #include "jsapi-tests/tests.h"
  10
  11 BEGIN_TEST(test_GetPropertyDescriptor) {
  12   JS::RootedValue v(cx);
  13   EVAL("({ somename : 123 })", &v);
  14   CHECK(v.isObject());
  15
  16   JS::RootedObject obj(cx, &v.toObject());
  17   JS::Rooted<mozilla::Maybe<JS::PropertyDescriptor>> desc(cx);
  18   JS::RootedObject holder(cx);
  19
  20   CHECK(JS_GetPropertyDescriptor(cx, obj, "somename", &desc, &holder));
  21   CHECK(desc.isSome());
  22   CHECK_SAME(desc->value(), JS::Int32Value(123));
  23
  24   JS::RootedValue descValue(cx);
  25   CHECK(JS::FromPropertyDescriptor(cx, desc, &descValue));
  26   CHECK(descValue.isObject());
  27   JS::RootedObject descObj(cx, &descValue.toObject());
  28   JS::RootedValue value(cx);
  29   CHECK(JS_GetProperty(cx, descObj, "value", &value));
  30   CHECK_EQUAL(value.toInt32(), 123);
  31   CHECK(JS_GetProperty(cx, descObj, "get", &value));
  32   CHECK(value.isUndefined());
  33   CHECK(JS_GetProperty(cx, descObj, "set", &value));
  34   CHECK(value.isUndefined());
  35   CHECK(JS_GetProperty(cx, descObj, "writable", &value));
  36   CHECK(value.isTrue());
  37   CHECK(JS_GetProperty(cx, descObj, "configurable", &value));
  38   CHECK(value.isTrue());
  39   CHECK(JS_GetProperty(cx, descObj, "enumerable", &value));
  40   CHECK(value.isTrue());
  41
  42   CHECK(JS_GetPropertyDescriptor(cx, obj, "not-here", &desc, &holder));
  43   CHECK(desc.isNothing());
  44
  45   CHECK(JS_GetPropertyDescriptor(cx, obj, "toString", &desc, &holder));
  46   JS::RootedObject objectProto(cx, JS::GetRealmObjectPrototype(cx));
  47   CHECK(objectProto);
  48   CHECK_EQUAL(holder, objectProto);
  49   CHECK(desc->value().isObject());
  50   CHECK(JS::IsCallable(&desc->value().toObject()));
  51
  52   return true;
  53 }
  54 END_TEST(test_GetPropertyDescriptor)