testDifferentNewTargetInvokeConstructor.cpp

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/* 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/CallAndConstruct.h"  // JS::Construct

#include "jsapi-tests/tests.h"

BEGIN_TEST(testDifferentNewTargetInvokeConstructor) {

  JS::RootedValue func(cx);

  JS::RootedValue otherFunc(cx);

  EVAL("(function() { /* This is a different new.target function */ })",

       &otherFunc);

  EVAL(

      "(function(expected) { if (expected !== new.target) throw new "

      "Error('whoops'); })",

      &func);

  JS::RootedValueArray<1> args(cx);

  args[0].set(otherFunc);

  JS::RootedObject obj(cx);

  JS::RootedObject newTarget(cx, &otherFunc.toObject());

  CHECK(JS::Construct(cx, func, newTarget, args, &obj));

  // It should fail, though, if newTarget is not a constructor

  JS::RootedValue plain(cx);

  EVAL("({})", &plain);

  args[0].set(plain);

  newTarget = &plain.toObject();

  CHECK(!JS::Construct(cx, func, newTarget, args, &obj));

  return true;

END_TEST(testDifferentNewTargetInvokeConstructor)