src/third_party/mozjs-45/js/src/tests/Intl/NumberFormat/format.js

// |reftest| skip-if(!this.hasOwnProperty("Intl"))
/* 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/. */

// Tests the format function with a diverse set of locales and options.

var format;

// Locale en-US; default options.
format = new Intl.NumberFormat("en-us");
assertEq(format.format(0), "0");
assertEq(format.format(-1), "-1");
assertEq(format.format(123456789.123456789), "123,456,789.123");

// Locale en-US; currency USD.
// The US dollar uses two fractional digits, and negative values are commonly
// parenthesized.
format = new Intl.NumberFormat("en-us", {style: "currency", currency: "USD"});
assertEq(format.format(0), "$0.00");
assertEq(format.format(-1), "-$1.00");
assertEq(format.format(123456789.123456789), "$123,456,789.12");

// Locale ja-JP; currency JPY.
// The Japanese yen has no subunit in real life.
format = new Intl.NumberFormat("ja-jp", {style: "currency", currency: "JPY"});
assertEq(format.format(0), "￥0");
assertEq(format.format(-1), "-￥1");
assertEq(format.format(123456789.123456789), "￥123,456,789");

// Locale ar-JO; currency JOD.
// The Jordanian Dinar divides into 1000 fils. Jordan uses (real) Arabic digits.
format = new Intl.NumberFormat("ar-jo", {style: "currency", currency: "JOD"});
assertEq(format.format(0), "د.أ.‏ ٠٫٠٠٠");
assertEq(format.format(-1), "‏-د.أ.‏ ١٫٠٠٠");
assertEq(format.format(123456789.123456789), "د.أ.‏ ١٢٣٬٤٥٦٬٧٨٩٫١٢٣");

// Locale th-TH; Thai digits, percent, two significant digits.
format = new Intl.NumberFormat("th-th-u-nu-thai",
                               {style: "percent",
                                minimumSignificantDigits: 2,
                                maximumSignificantDigits: 2});
assertEq(format.format(0), "๐.๐%");
assertEq(format.format(-0.01), "-๑.๐%");
assertEq(format.format(1.10), "๑๑๐%");

reportCompare(0, 0, 'ok');