| // Copyright 2019 Google Inc. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-initializedatetimeformat |
| description: > |
| Tests that the behavior of a Record is not affected by |
| adversarial changes to Object.prototype. |
| includes: [testIntl.js] |
| features: [Intl.DateTimeFormat-dayPeriod] |
| ---*/ |
| |
| taintProperties(["dayPeriod"]); |
| |
| var locale = new Intl.DateTimeFormat(undefined, {localeMatcher: "lookup"}).resolvedOptions().locale; |
| assert(isCanonicalizedStructurallyValidLanguageTag(locale), "DateTimeFormat returns invalid locale " + locale + "."); |
