JSTests/test262/test/intl402/RelativeTimeFormat/constructor/supportedLocalesOf/options-undefined.js

// Copyright 2018 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-Intl.RelativeTimeFormat.supportedLocalesOf
description: Checks handling of an undefined options argument to the supportedLocalesOf function.
info: |
    SupportedLocales ( availableLocales, requestedLocales, options )

    1. If options is not undefined, then
        b. Let matcher be ? GetOption(options, "localeMatcher", "string", «"lookup", "best fit"», "best fit").
features: [Intl.RelativeTimeFormat]
---*/

assert.sameValue(typeof Intl.RelativeTimeFormat.supportedLocalesOf, "function",
                 "Should support Intl.RelativeTimeFormat.supportedLocalesOf.");

Object.defineProperties(Object.prototype, {
  "localeMatcher": {
    get() { throw new Error("Should not call localeMatcher getter"); }
  }
});

assert.sameValue(Array.isArray(Intl.RelativeTimeFormat.supportedLocalesOf()), true, "No arguments");
assert.sameValue(Array.isArray(Intl.RelativeTimeFormat.supportedLocalesOf([])), true, "One argument");
assert.sameValue(Array.isArray(Intl.RelativeTimeFormat.supportedLocalesOf([], undefined)), true, "Two arguments");