src/v8/test/intl/number-format/property-override.js

// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Checks for security holes introduced by Object.property overrides.
// For example:
// Object.defineProperty(Array.prototype, 'locale', {
//   set: function(value) {
//     throw new Error('blah');
//   },
//   configurable: true,
//   enumerable: false
// });
//
// would throw in case of (JS) x.locale = 'us' or (C++) x->Set('locale', 'us').
//
// Update both number-format.js and number-format.cc so they have the same
// list of properties.

// Flags: --noharmony-intl-numberformat-unified

// First get supported properties.
var properties = [];
// Some properties are optional and won't show up in resolvedOptions if
// they were not requested - currency, currencyDisplay,
// minimumSignificantDigits and maximumSignificantDigits - so we request them.
var options = Intl.NumberFormat(
  undefined, {style: 'currency', currency: 'USD', currencyDisplay: 'name',
              minimumSignificantDigits: 1, maximumSignificantDigits: 5}).
    resolvedOptions();
for (var prop in options) {
  if (options.hasOwnProperty(prop)) {
    properties.push(prop);
  }
}

var expectedProperties = [
  'style', 'locale', 'numberingSystem',
  'currency', 'currencyDisplay', 'useGrouping',
  'minimumIntegerDigits', 'minimumFractionDigits',
  'maximumFractionDigits', 'minimumSignificantDigits',
  'maximumSignificantDigits'
];

assertEquals(expectedProperties.length, properties.length);

properties.forEach(function(prop) {
  assertFalse(expectedProperties.indexOf(prop) === -1);
});

taintProperties(properties);

var locale = Intl.NumberFormat(undefined,
                               {currency: 'USD', currencyDisplay: 'name',
                                minimumIntegerDigits: 2,
                                numberingSystem: 'latn'}).
    resolvedOptions().locale;