The Tor Browser: js/src/tests/supporting/testIntl.js@6474c204b198 (annotated)

js/src/tests/supporting/testIntl.js@6474c204b198 (annotated)

js/src/tests/supporting/testIntl.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright 2011-2012 Norbert Lindenberg. All rights reserved.
 // Copyright 2012-2013 Mozilla Corporation. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /**
  * This file contains shared functions for the tests in the conformance test
  * suite for the ECMAScript Internationalization API.
  * @author Norbert Lindenberg
  */
 /**
  * @description Calls the provided function for every service constructor in
  * the Intl object, until f returns a falsy value. It returns the result of the
  * last call to f, mapped to a boolean.
  * @param {Function} f the function to call for each service constructor in
  *     the Intl object.
  *     @param {Function} Constructor the constructor object to test with.
  * @result {Boolean} whether the test succeeded.
  */
 function testWithIntlConstructors(f) {
     var constructors = ["Collator", "NumberFormat", "DateTimeFormat"];
     return constructors.every(function (constructor) {
         var Constructor = Intl[constructor];
         var result;
         try {
             result = f(Constructor);
         } catch (e) {
             e.message += " (Testing with " + constructor + ".)";
             throw e;
         }
         return result;
     });
 }
 /**
  * Returns the name of the given constructor object, which must be one of
  * Intl.Collator, Intl.NumberFormat, or Intl.DateTimeFormat.
  * @param {object} Constructor a constructor
  * @return {string} the name of the constructor
  */
 function getConstructorName(Constructor) {
     switch (Constructor) {
         case Intl.Collator:
             return "Collator";
         case Intl.NumberFormat:
             return "NumberFormat";
         case Intl.DateTimeFormat:
             return "DateTimeFormat";
         default:
             $ERROR("test internal error: unknown Constructor");
     }
 }
 /**
  * Taints a named data property of the given object by installing
  * a setter that throws an exception.
  * @param {object} obj the object whose data property to taint
  * @param {string} property the property to taint
  */
 function taintDataProperty(obj, property) {
     Object.defineProperty(obj, property, {
         set: function(value) {
             $ERROR("Client code can adversely affect behavior: setter for " + property + ".");
         },
         enumerable: false,
         configurable: true
     });
 }
 /**
  * Taints a named method of the given object by replacing it with a function
  * that throws an exception.
  * @param {object} obj the object whose method to taint
  * @param {string} property the name of the method to taint
  */
 function taintMethod(obj, property) {
     Object.defineProperty(obj, property, {
         value: function() {
             $ERROR("Client code can adversely affect behavior: method " + property + ".");
         },
         writable: true,
         enumerable: false,
         configurable: true
     });
 }
 /**
  * Taints the given properties (and similarly named properties) by installing
  * setters on Object.prototype that throw exceptions.
  * @param {Array} properties an array of property names to taint
  */
 function taintProperties(properties) {
     properties.forEach(function (property) {
         var adaptedProperties = [property, "__" + property, "_" + property, property + "_", property + "__"];
         adaptedProperties.forEach(function (property) {
             taintDataProperty(Object.prototype, property);
         });
     });
 }
 /**
  * Taints the Array object by creating a setter for the property "0" and
  * replacing some key methods with functions that throw exceptions.
  */
 function taintArray() {
     taintDataProperty(Array.prototype, "0");
     taintMethod(Array.prototype, "indexOf");
     taintMethod(Array.prototype, "join");
     taintMethod(Array.prototype, "push");
     taintMethod(Array.prototype, "slice");
     taintMethod(Array.prototype, "sort");
 }
 // auxiliary data for getLocaleSupportInfo
 var languages = ["zh", "es", "en", "hi", "ur", "ar", "ja", "pa"];
 var scripts = ["Latn", "Hans", "Deva", "Arab", "Jpan", "Hant"];
 var countries = ["CN", "IN", "US", "PK", "JP", "TW", "HK", "SG"];
 var localeSupportInfo = {};
 /**
  * Gets locale support info for the given constructor object, which must be one
  * of Intl.Collator, Intl.NumberFormat, Intl.DateTimeFormat.
  * @param {object} Constructor the constructor for which to get locale support info
  * @return {object} locale support info with the following properties:
  *     supported: array of fully supported language tags
  *     byFallback: array of language tags that are supported through fallbacks
  *     unsupported: array of unsupported language tags
  */
 function getLocaleSupportInfo(Constructor) {
     var constructorName = getConstructorName(Constructor);
     if (localeSupportInfo[constructorName] !== undefined) {
         return localeSupportInfo[constructorName];
     }
     var allTags = [];
     var i, j, k;
     var language, script, country;
     for (i = 0; i < languages.length; i++) {
         language = languages[i];
         allTags.push(language);
         for (j = 0; j < scripts.length; j++) {
             script = scripts[j];
             allTags.push(language + "-" + script);
             for (k = 0; k < countries.length; k++) {
                 country = countries[k];
                 allTags.push(language + "-" + script + "-" + country);
             }
         }
         for (k = 0; k < countries.length; k++) {
             country = countries[k];
             allTags.push(language + "-" + country);
         }
     }
     var supported = [];
     var byFallback = [];
     var unsupported = [];
     for (i = 0; i < allTags.length; i++) {
         var request = allTags[i];
         var result = new Constructor([request], {localeMatcher: "lookup"}).resolvedOptions().locale;
          if (request === result) {
             supported.push(request);
         } else if (request.indexOf(result) === 0) {
             byFallback.push(request);
         } else {
             unsupported.push(request);
         }
     }
     localeSupportInfo[constructorName] = {
         supported: supported,
         byFallback: byFallback,
         unsupported: unsupported
     };
     return localeSupportInfo[constructorName];
 }
 /**
  * @description Tests whether locale is a String value representing a
  * structurally valid and canonicalized BCP 47 language tag, as defined in
  * sections 6.2.2 and 6.2.3 of the ECMAScript Internationalization API
  * Specification.
  * @param {String} locale the string to be tested.
  * @result {Boolean} whether the test succeeded.
  */
 function isCanonicalizedStructurallyValidLanguageTag(locale) {
     /**
      * Regular expression defining BCP 47 language tags.
      *
      * Spec: RFC 5646 section 2.1.
      */
     var alpha = "[a-zA-Z]",
         digit = "[0-9]",
         alphanum = "(" + alpha + "|" + digit + ")",
         regular = "(art-lojban|cel-gaulish|no-bok|no-nyn|zh-guoyu|zh-hakka|zh-min|zh-min-nan|zh-xiang)",
         irregular = "(en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE)",
         grandfathered = "(" + irregular + "|" + regular + ")",
         privateuse = "(x(-[a-z0-9]{1,8})+)",
         singleton = "(" + digit + "|[A-WY-Za-wy-z])",
         extension = "(" + singleton + "(-" + alphanum + "{2,8})+)",
         variant = "(" + alphanum + "{5,8}|(" + digit + alphanum + "{3}))",
         region = "(" + alpha + "{2}|" + digit + "{3})",
         script = "(" + alpha + "{4})",
         extlang = "(" + alpha + "{3}(-" + alpha + "{3}){0,2})",
         language = "(" + alpha + "{2,3}(-" + extlang + ")?|" + alpha + "{4}|" + alpha + "{5,8})",
         langtag = language + "(-" + script + ")?(-" + region + ")?(-" + variant + ")*(-" + extension + ")*(-" + privateuse + ")?",
         languageTag = "^(" + langtag + "|" + privateuse + "|" + grandfathered + ")$",
         languageTagRE = new RegExp(languageTag, "i");
     var duplicateSingleton = "-" + singleton + "-(.*-)?\\1(?!" + alphanum + ")",
         duplicateSingletonRE = new RegExp(duplicateSingleton, "i"),
         duplicateVariant = "(" + alphanum + "{2,8}-)+" + variant + "-(" + alphanum + "{2,8}-)*\\3(?!" + alphanum + ")",
         duplicateVariantRE = new RegExp(duplicateVariant, "i");
     /**
      * Verifies that the given string is a well-formed BCP 47 language tag
      * with no duplicate variant or singleton subtags.
      *
      * Spec: ECMAScript Internationalization API Specification, draft, 6.2.2.
      */
     function isStructurallyValidLanguageTag(locale) {
         if (!languageTagRE.test(locale)) {
             return false;
         }
         locale = locale.split(/-x-/)[0];
         return !duplicateSingletonRE.test(locale) && !duplicateVariantRE.test(locale);
     }
     /**
      * Mappings from complete tags to preferred values.
      *
      * Spec: IANA Language Subtag Registry.
      */
     var __tagMappings = {
         // property names must be in lower case; values in canonical form
         // grandfathered tags from IANA language subtag registry, file date 2011-08-25
         "art-lojban": "jbo",
         "cel-gaulish": "cel-gaulish",
         "en-gb-oed": "en-GB-oed",
         "i-ami": "ami",
         "i-bnn": "bnn",
         "i-default": "i-default",
         "i-enochian": "i-enochian",
         "i-hak": "hak",
         "i-klingon": "tlh",
         "i-lux": "lb",
         "i-mingo": "i-mingo",
         "i-navajo": "nv",
         "i-pwn": "pwn",
         "i-tao": "tao",
         "i-tay": "tay",
         "i-tsu": "tsu",
         "no-bok": "nb",
         "no-nyn": "nn",
         "sgn-be-fr": "sfb",
         "sgn-be-nl": "vgt",
         "sgn-ch-de": "sgg",
         "zh-guoyu": "cmn",
         "zh-hakka": "hak",
         "zh-min": "zh-min",
         "zh-min-nan": "nan",
         "zh-xiang": "hsn",
         // deprecated redundant tags from IANA language subtag registry, file date 2011-08-25
         "sgn-br": "bzs",
         "sgn-co": "csn",
         "sgn-de": "gsg",
         "sgn-dk": "dsl",
         "sgn-es": "ssp",
         "sgn-fr": "fsl",
         "sgn-gb": "bfi",
         "sgn-gr": "gss",
         "sgn-ie": "isg",
         "sgn-it": "ise",
         "sgn-jp": "jsl",
         "sgn-mx": "mfs",
         "sgn-ni": "ncs",
         "sgn-nl": "dse",
         "sgn-no": "nsl",
         "sgn-pt": "psr",
         "sgn-se": "swl",
         "sgn-us": "ase",
         "sgn-za": "sfs",
         "zh-cmn": "cmn",
         "zh-cmn-hans": "cmn-Hans",
         "zh-cmn-hant": "cmn-Hant",
         "zh-gan": "gan",
         "zh-wuu": "wuu",
         "zh-yue": "yue",
         // deprecated variant with prefix from IANA language subtag registry, file date 2011-08-25
         "ja-latn-hepburn-heploc": "ja-Latn-alalc97"
     };
     /**
      * Mappings from non-extlang subtags to preferred values.
      *
      * Spec: IANA Language Subtag Registry.
      */
     var __subtagMappings = {
         // property names and values must be in canonical case
         // language subtags with Preferred-Value mappings from IANA language subtag registry, file date 2011-08-25
         "in": "id",
         "iw": "he",
         "ji": "yi",
         "jw": "jv",
         "mo": "ro",
         "ayx": "nun",
         "cjr": "mom",
         "cmk": "xch",
         "drh": "khk",
         "drw": "prs",
         "gav": "dev",
         "mst": "mry",
         "myt": "mry",
         "tie": "ras",
         "tkk": "twm",
         "tnf": "prs",
         // region subtags with Preferred-Value mappings from IANA language subtag registry, file date 2011-08-25
         "BU": "MM",
         "DD": "DE",
         "FX": "FR",
         "TP": "TL",
         "YD": "YE",
         "ZR": "CD"
     };
     /**
      * Mappings from extlang subtags to preferred values.
      *
      * Spec: IANA Language Subtag Registry.
      */
     var __extlangMappings = {
         // extlang subtags with Preferred-Value mappings from IANA language subtag registry, file date 2011-08-25
         // values are arrays with [0] the replacement value, [1] (if present) the prefix to be removed
         "aao": ["aao", "ar"],
         "abh": ["abh", "ar"],
         "abv": ["abv", "ar"],
         "acm": ["acm", "ar"],
         "acq": ["acq", "ar"],
         "acw": ["acw", "ar"],
         "acx": ["acx", "ar"],
         "acy": ["acy", "ar"],
         "adf": ["adf", "ar"],
         "ads": ["ads", "sgn"],
         "aeb": ["aeb", "ar"],
         "aec": ["aec", "ar"],
         "aed": ["aed", "sgn"],
         "aen": ["aen", "sgn"],
         "afb": ["afb", "ar"],
         "afg": ["afg", "sgn"],
         "ajp": ["ajp", "ar"],
         "apc": ["apc", "ar"],
         "apd": ["apd", "ar"],
         "arb": ["arb", "ar"],
         "arq": ["arq", "ar"],
         "ars": ["ars", "ar"],
         "ary": ["ary", "ar"],
         "arz": ["arz", "ar"],
         "ase": ["ase", "sgn"],
         "asf": ["asf", "sgn"],
         "asp": ["asp", "sgn"],
         "asq": ["asq", "sgn"],
         "asw": ["asw", "sgn"],
         "auz": ["auz", "ar"],
         "avl": ["avl", "ar"],
         "ayh": ["ayh", "ar"],
         "ayl": ["ayl", "ar"],
         "ayn": ["ayn", "ar"],
         "ayp": ["ayp", "ar"],
         "bbz": ["bbz", "ar"],
         "bfi": ["bfi", "sgn"],
         "bfk": ["bfk", "sgn"],
         "bjn": ["bjn", "ms"],
         "bog": ["bog", "sgn"],
         "bqn": ["bqn", "sgn"],
         "bqy": ["bqy", "sgn"],
         "btj": ["btj", "ms"],
         "bve": ["bve", "ms"],
         "bvl": ["bvl", "sgn"],
         "bvu": ["bvu", "ms"],
         "bzs": ["bzs", "sgn"],
         "cdo": ["cdo", "zh"],
         "cds": ["cds", "sgn"],
         "cjy": ["cjy", "zh"],
         "cmn": ["cmn", "zh"],
         "coa": ["coa", "ms"],
         "cpx": ["cpx", "zh"],
         "csc": ["csc", "sgn"],
         "csd": ["csd", "sgn"],
         "cse": ["cse", "sgn"],
         "csf": ["csf", "sgn"],
         "csg": ["csg", "sgn"],
         "csl": ["csl", "sgn"],
         "csn": ["csn", "sgn"],
         "csq": ["csq", "sgn"],
         "csr": ["csr", "sgn"],
         "czh": ["czh", "zh"],
         "czo": ["czo", "zh"],
         "doq": ["doq", "sgn"],
         "dse": ["dse", "sgn"],
         "dsl": ["dsl", "sgn"],
         "dup": ["dup", "ms"],
         "ecs": ["ecs", "sgn"],
         "esl": ["esl", "sgn"],
         "esn": ["esn", "sgn"],
         "eso": ["eso", "sgn"],
         "eth": ["eth", "sgn"],
         "fcs": ["fcs", "sgn"],
         "fse": ["fse", "sgn"],
         "fsl": ["fsl", "sgn"],
         "fss": ["fss", "sgn"],
         "gan": ["gan", "zh"],
         "gom": ["gom", "kok"],
         "gse": ["gse", "sgn"],
         "gsg": ["gsg", "sgn"],
         "gsm": ["gsm", "sgn"],
         "gss": ["gss", "sgn"],
         "gus": ["gus", "sgn"],
         "hab": ["hab", "sgn"],
         "haf": ["haf", "sgn"],
         "hak": ["hak", "zh"],
         "hds": ["hds", "sgn"],
         "hji": ["hji", "ms"],
         "hks": ["hks", "sgn"],
         "hos": ["hos", "sgn"],
         "hps": ["hps", "sgn"],
         "hsh": ["hsh", "sgn"],
         "hsl": ["hsl", "sgn"],
         "hsn": ["hsn", "zh"],
         "icl": ["icl", "sgn"],
         "ils": ["ils", "sgn"],
         "inl": ["inl", "sgn"],
         "ins": ["ins", "sgn"],
         "ise": ["ise", "sgn"],
         "isg": ["isg", "sgn"],
         "isr": ["isr", "sgn"],
         "jak": ["jak", "ms"],
         "jax": ["jax", "ms"],
         "jcs": ["jcs", "sgn"],
         "jhs": ["jhs", "sgn"],
         "jls": ["jls", "sgn"],
         "jos": ["jos", "sgn"],
         "jsl": ["jsl", "sgn"],
         "jus": ["jus", "sgn"],
         "kgi": ["kgi", "sgn"],
         "knn": ["knn", "kok"],
         "kvb": ["kvb", "ms"],
         "kvk": ["kvk", "sgn"],
         "kvr": ["kvr", "ms"],
         "kxd": ["kxd", "ms"],
         "lbs": ["lbs", "sgn"],
         "lce": ["lce", "ms"],
         "lcf": ["lcf", "ms"],
         "liw": ["liw", "ms"],
         "lls": ["lls", "sgn"],
         "lsg": ["lsg", "sgn"],
         "lsl": ["lsl", "sgn"],
         "lso": ["lso", "sgn"],
         "lsp": ["lsp", "sgn"],
         "lst": ["lst", "sgn"],
         "lsy": ["lsy", "sgn"],
         "ltg": ["ltg", "lv"],
         "lvs": ["lvs", "lv"],
         "lzh": ["lzh", "zh"],
         "max": ["max", "ms"],
         "mdl": ["mdl", "sgn"],
         "meo": ["meo", "ms"],
         "mfa": ["mfa", "ms"],
         "mfb": ["mfb", "ms"],
         "mfs": ["mfs", "sgn"],
         "min": ["min", "ms"],
         "mnp": ["mnp", "zh"],
         "mqg": ["mqg", "ms"],
         "mre": ["mre", "sgn"],
         "msd": ["msd", "sgn"],
         "msi": ["msi", "ms"],
         "msr": ["msr", "sgn"],
         "mui": ["mui", "ms"],
         "mzc": ["mzc", "sgn"],
         "mzg": ["mzg", "sgn"],
         "mzy": ["mzy", "sgn"],
         "nan": ["nan", "zh"],
         "nbs": ["nbs", "sgn"],
         "ncs": ["ncs", "sgn"],
         "nsi": ["nsi", "sgn"],
         "nsl": ["nsl", "sgn"],
         "nsp": ["nsp", "sgn"],
         "nsr": ["nsr", "sgn"],
         "nzs": ["nzs", "sgn"],
         "okl": ["okl", "sgn"],
         "orn": ["orn", "ms"],
         "ors": ["ors", "ms"],
         "pel": ["pel", "ms"],
         "pga": ["pga", "ar"],
         "pks": ["pks", "sgn"],
         "prl": ["prl", "sgn"],
         "prz": ["prz", "sgn"],
         "psc": ["psc", "sgn"],
         "psd": ["psd", "sgn"],
         "pse": ["pse", "ms"],
         "psg": ["psg", "sgn"],
         "psl": ["psl", "sgn"],
         "pso": ["pso", "sgn"],
         "psp": ["psp", "sgn"],
         "psr": ["psr", "sgn"],
         "pys": ["pys", "sgn"],
         "rms": ["rms", "sgn"],
         "rsi": ["rsi", "sgn"],
         "rsl": ["rsl", "sgn"],
         "sdl": ["sdl", "sgn"],
         "sfb": ["sfb", "sgn"],
         "sfs": ["sfs", "sgn"],
         "sgg": ["sgg", "sgn"],
         "sgx": ["sgx", "sgn"],
         "shu": ["shu", "ar"],
         "slf": ["slf", "sgn"],
         "sls": ["sls", "sgn"],
         "sqs": ["sqs", "sgn"],
         "ssh": ["ssh", "ar"],
         "ssp": ["ssp", "sgn"],
         "ssr": ["ssr", "sgn"],
         "svk": ["svk", "sgn"],
         "swc": ["swc", "sw"],
         "swh": ["swh", "sw"],
         "swl": ["swl", "sgn"],
         "syy": ["syy", "sgn"],
         "tmw": ["tmw", "ms"],
         "tse": ["tse", "sgn"],
         "tsm": ["tsm", "sgn"],
         "tsq": ["tsq", "sgn"],
         "tss": ["tss", "sgn"],
         "tsy": ["tsy", "sgn"],
         "tza": ["tza", "sgn"],
         "ugn": ["ugn", "sgn"],
         "ugy": ["ugy", "sgn"],
         "ukl": ["ukl", "sgn"],
         "uks": ["uks", "sgn"],
         "urk": ["urk", "ms"],
         "uzn": ["uzn", "uz"],
         "uzs": ["uzs", "uz"],
         "vgt": ["vgt", "sgn"],
         "vkk": ["vkk", "ms"],
         "vkt": ["vkt", "ms"],
         "vsi": ["vsi", "sgn"],
         "vsl": ["vsl", "sgn"],
         "vsv": ["vsv", "sgn"],
         "wuu": ["wuu", "zh"],
         "xki": ["xki", "sgn"],
         "xml": ["xml", "sgn"],
         "xmm": ["xmm", "ms"],
         "xms": ["xms", "sgn"],
         "yds": ["yds", "sgn"],
         "ysl": ["ysl", "sgn"],
         "yue": ["yue", "zh"],
         "zib": ["zib", "sgn"],
         "zlm": ["zlm", "ms"],
         "zmi": ["zmi", "ms"],
         "zsl": ["zsl", "sgn"],
         "zsm": ["zsm", "ms"]
     };
     /**
      * Canonicalizes the given well-formed BCP 47 language tag, including regularized case of subtags.
      *
      * Spec: ECMAScript Internationalization API Specification, draft, 6.2.3.
      * Spec: RFC 5646, section 4.5.
      */
     function canonicalizeLanguageTag(locale) {
         // start with lower case for easier processing, and because most subtags will need to be lower case anyway
         locale = locale.toLowerCase();
         // handle mappings for complete tags
         if (__tagMappings.hasOwnProperty(locale)) {
             return __tagMappings[locale];
         }
         var subtags = locale.split("-");
         var i = 0;
         // handle standard part: all subtags before first singleton or "x"
         while (i < subtags.length) {
             var subtag = subtags[i];
             if (subtag.length === 1 && (i > 0 || subtag === "x")) {
                 break;
             } else if (i !== 0 && subtag.length === 2) {
                 subtag = subtag.toUpperCase();
             } else if (subtag.length === 4) {
                 subtag = subtag[0].toUpperCase() + subtag.substring(1).toLowerCase();
             }
             if (__subtagMappings.hasOwnProperty(subtag)) {
                 subtag = __subtagMappings[subtag];
             } else if (__extlangMappings.hasOwnProperty(subtag)) {
                 subtag = __extlangMappings[subtag][0];
                 if (i === 1 && __extlangMappings[subtag][1] === subtags[0]) {
                     subtags.shift();
                     i--;
                 }
             }
             subtags[i] = subtag;
             i++;
         }
         var normal = subtags.slice(0, i).join("-");
         // handle extensions
         var extensions = [];
         while (i < subtags.length && subtags[i] !== "x") {
             var extensionStart = i;
             i++;
             while (i < subtags.length && subtags[i].length > 1) {
                 i++;
             }
             var extension = subtags.slice(extensionStart, i).join("-");
             extensions.push(extension);
         }
         extensions.sort();
         // handle private use
         var privateUse;
         if (i < subtags.length) {
             privateUse = subtags.slice(i).join("-");
         }
         // put everything back together
         var canonical = normal;
         if (extensions.length > 0) {
             canonical += "-" + extensions.join("-");
         }
         if (privateUse !== undefined) {
             if (canonical.length > 0) {
                 canonical += "-" + privateUse;
             } else {
                 canonical = privateUse;
             }
         }
         return canonical;
     }
     return typeof locale === "string" && isStructurallyValidLanguageTag(locale) &&
             canonicalizeLanguageTag(locale) === locale;
 }
 /**
  * Tests whether the named options property is correctly handled by the given constructor.
  * @param {object} Constructor the constructor to test.
  * @param {string} property the name of the options property to test.
  * @param {string} type the type that values of the property are expected to have
  * @param {Array} [values] an array of allowed values for the property. Not needed for boolean.
  * @param {any} fallback the fallback value that the property assumes if not provided.
  * @param {object} testOptions additional options:
  *     @param {boolean} isOptional whether support for this property is optional for implementations.
  *     @param {boolean} noReturn whether the resulting value of the property is not returned.
  *     @param {boolean} isILD whether the resulting value of the property is implementation and locale dependent.
  *     @param {object} extra additional option to pass along, properties are value -> {option: value}.
  * @return {boolean} whether the test succeeded.
  */
 function testOption(Constructor, property, type, values, fallback, testOptions) {
     var isOptional = testOptions !== undefined && testOptions.isOptional === true;
     var noReturn = testOptions !== undefined && testOptions.noReturn === true;
     var isILD = testOptions !== undefined && testOptions.isILD === true;
     function addExtraOptions(options, value, testOptions) {
         if (testOptions !== undefined && testOptions.extra !== undefined) {
             var extra;
             if (value !== undefined && testOptions.extra[value] !== undefined) {
                 extra = testOptions.extra[value];
             } else if (testOptions.extra.any !== undefined) {
                 extra = testOptions.extra.any;
             }
             if (extra !== undefined) {
                 Object.getOwnPropertyNames(extra).forEach(function (prop) {
                     options[prop] = extra[prop];
                 });
             }
         }
     }
     var testValues, options, obj, expected, actual, error;
     // test that the specified values are accepted. Also add values that convert to specified values.
     if (type === "boolean") {
         if (values === undefined) {
             values = [true, false];
         }
         testValues = values.slice(0);
         testValues.push(888);
         testValues.push(0);
     } else if (type === "string") {
         testValues = values.slice(0);
         testValues.push({toString: function () { return values[0]; }});
     }
     testValues.forEach(function (value) {
         options = {};
         options[property] = value;
         addExtraOptions(options, value, testOptions);
         obj = new Constructor(undefined, options);
         if (noReturn) {
             if (obj.resolvedOptions().hasOwnProperty(property)) {
                 $ERROR("Option property " + property + " is returned, but shouldn't be.");
             }
         } else {
             actual = obj.resolvedOptions()[property];
             if (isILD) {
                 if (actual !== undefined && values.indexOf(actual) === -1) {
                     $ERROR("Invalid value " + actual + " returned for property " + property + ".");
                 }
             } else {
                 if (type === "boolean") {
                     expected = Boolean(value);
                 } else if (type === "string") {
                     expected = String(value);
                 }
                 if (actual !== expected && !(isOptional && actual === undefined)) {
                     $ERROR("Option value " + value + " for property " + property +
                         " was not accepted; got " + actual + " instead.");
                 }
             }
         }
     });
     // test that invalid values are rejected
     if (type === "string") {
         var invalidValues = ["invalidValue", -1, null];
         // assume that we won't have values in caseless scripts
         if (values[0].toUpperCase() !== values[0]) {
             invalidValues.push(values[0].toUpperCase());
         } else {
             invalidValues.push(values[0].toLowerCase());
         }
         invalidValues.forEach(function (value) {
             options = {};
             options[property] = value;
             addExtraOptions(options, value, testOptions);
             error = undefined;
             try {
                 obj = new Constructor(undefined, options);
             } catch (e) {
                 error = e;
             }
             if (error === undefined) {
                 $ERROR("Invalid option value " + value + " for property " + property + " was not rejected.");
             } else if (error.name !== "RangeError") {
                 $ERROR("Invalid option value " + value + " for property " + property + " was rejected with wrong error " + error.name + ".");
             }
         });
     }
     // test that fallback value or another valid value is used if no options value is provided
     if (!noReturn) {
         options = {};
         addExtraOptions(options, undefined, testOptions);
         obj = new Constructor(undefined, options);
         actual = obj.resolvedOptions()[property];
         if (!(isOptional && actual === undefined)) {
             if (fallback !== undefined) {
                 if (actual !== fallback) {
                     $ERROR("Option fallback value " + fallback + " for property " + property +
                         " was not used; got " + actual + " instead.");
                 }
             } else {
                 if (values.indexOf(actual) === -1 && !(isILD && actual === undefined)) {
                     $ERROR("Invalid value " + actual + " returned for property " + property + ".");
                 }
             }
         }
     }
     return true;
 }
 /**
  * Tests whether the named property of the given object has a valid value
  * and the default attributes of the properties of an object literal.
  * @param {Object} obj the object to be tested.
  * @param {string} property the name of the property
  * @param {Function|Array} valid either a function that tests value for validity and returns a boolean,
  *     an array of valid values.
  * @exception if the property has an invalid value.
  */
 function testProperty(obj, property, valid) {
     var desc = Object.getOwnPropertyDescriptor(obj, property);
     if (!desc.writable) {
         $ERROR("Property " + property + " must be writable.");
     }
     if (!desc.enumerable) {
         $ERROR("Property " + property + " must be enumerable.");
     }
     if (!desc.configurable) {
         $ERROR("Property " + property + " must be configurable.");
     }
     var value = desc.value;
     var isValid = (typeof valid === "function") ? valid(value) : (valid.indexOf(value) !== -1);
     if (!isValid) {
         $ERROR("Property value " + value + " is not allowed for property " + property + ".");
     }
 }
 /**
  * Tests whether the named property of the given object, if present at all, has a valid value
  * and the default attributes of the properties of an object literal.
  * @param {Object} obj the object to be tested.
  * @param {string} property the name of the property
  * @param {Function|Array} valid either a function that tests value for validity and returns a boolean,
  *     an array of valid values.
  * @exception if the property is present and has an invalid value.
  */
 function mayHaveProperty(obj, property, valid) {
     if (obj.hasOwnProperty(property)) {
         testProperty(obj, property, valid);
     }
 }
 /**
  * Tests whether the given object has the named property with a valid value
  * and the default attributes of the properties of an object literal.
  * @param {Object} obj the object to be tested.
  * @param {string} property the name of the property
  * @param {Function|Array} valid either a function that tests value for validity and returns a boolean,
  *     an array of valid values.
  * @exception if the property is missing or has an invalid value.
  */
 function mustHaveProperty(obj, property, valid) {
     if (!obj.hasOwnProperty(property)) {
         $ERROR("Object is missing property " + property + ".");
     }
     testProperty(obj, property, valid);
 }
 /**
  * Tests whether the given object does not have the named property.
  * @param {Object} obj the object to be tested.
  * @param {string} property the name of the property
  * @exception if the property is present.
  */
 function mustNotHaveProperty(obj, property) {
     if (obj.hasOwnProperty(property)) {
         $ERROR("Object has property it mustn't have: " + property + ".");
     }
 }
 /**
  * Properties of the RegExp constructor that may be affected by use of regular
  * expressions, and the default values of these properties. Properties are from
  * https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Deprecated_and_obsolete_features#RegExp_Properties
  */
 var regExpProperties = ["$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
     "$_", "$*", "$&", "$+", "$`", "$'",
     "input", "lastMatch", "lastParen", "leftContext", "rightContext"
 ];
 var regExpPropertiesDefaultValues = (function () {
     var values = Object.create(null);
     regExpProperties.forEach(function (property) {
         values[property] = RegExp[property];
     });
     return values;
 }());
 /**
  * Tests that executing the provided function (which may use regular expressions
  * in its implementation) does not create or modify unwanted properties on the
  * RegExp constructor.
  */
 function testForUnwantedRegExpChanges(testFunc) {
     regExpProperties.forEach(function (property) {
         RegExp[property] = regExpPropertiesDefaultValues[property];
     });
     testFunc();
     regExpProperties.forEach(function (property) {
         if (RegExp[property] !== regExpPropertiesDefaultValues[property]) {
             $ERROR("RegExp has unexpected property " + property + " with value " +
                 RegExp[property] + ".");
         }
     });
 }
 /**
  * Tests whether name is a valid BCP 47 numbering system name
  * and not excluded from use in the ECMAScript Internationalization API.
  * @param {string} name the name to be tested.
  * @return {boolean} whether name is a valid BCP 47 numbering system name and
  *     allowed for use in the ECMAScript Internationalization API.
  */
 function isValidNumberingSystem(name) {
     // source: CLDR file common/bcp47/number.xml; version CLDR 21.
     var numberingSystems = [
         "arab",
         "arabext",
         "armn",
         "armnlow",
         "bali",
         "beng",
         "brah",
         "cakm",
         "cham",
         "deva",
         "ethi",
         "finance",
         "fullwide",
         "geor",
         "grek",
         "greklow",
         "gujr",
         "guru",
         "hanidec",
         "hans",
         "hansfin",
         "hant",
         "hantfin",
         "hebr",
         "java",
         "jpan",
         "jpanfin",
         "kali",
         "khmr",
         "knda",
         "osma",
         "lana",
         "lanatham",
         "laoo",
         "latn",
         "lepc",
         "limb",
         "mlym",
         "mong",
         "mtei",
         "mymr",
         "mymrshan",
         "native",
         "nkoo",
         "olck",
         "orya",
         "roman",
         "romanlow",
         "saur",
         "shrd",
         "sora",
         "sund",
         "talu",
         "takr",
         "taml",
         "tamldec",
         "telu",
         "thai",
         "tibt",
         "traditio",
         "vaii"
     ];
     var excluded = [
         "finance",
         "native",
         "traditio"
     ];
     return numberingSystems.indexOf(name) !== -1 && excluded.indexOf(name) === -1;
 }
 /**
  * Provides the digits of numbering systems with simple digit mappings,
  * as specified in 11.3.2.
  */
 var numberingSystemDigits = {
     arab: "٠١٢٣٤٥٦٧٨٩",
     arabext: "۰۱۲۳۴۵۶۷۸۹",
     beng: "০১২৩৪৫৬৭৮৯",
     deva: "०१२३४५६७८९",
     fullwide: "０１２３４５６７８９",
     gujr: "૦૧૨૩૪૫૬૭૮૯",
     guru: "੦੧੨੩੪੫੬੭੮੯",
     hanidec: "〇一二三四五六七八九",
     khmr: "០១២៣៤៥៦៧៨៩",
     knda: "೦೧೨೩೪೫೬೭೮೯",
     laoo: "໐໑໒໓໔໕໖໗໘໙",
     latn: "0123456789",
     mlym: "൦൧൨൩൪൫൬൭൮൯",
     mong: "᠐᠑᠒᠓᠔᠕᠖᠗᠘᠙",
     mymr: "၀၁၂၃၄၅၆၇၈၉",
     orya: "୦୧୨୩୪୫୬୭୮୯",
     tamldec: "௦௧௨௩௪௫௬௭௮௯",
     telu: "౦౧౨౩౪౫౬౭౮౯",
     thai: "๐๑๒๓๔๕๖๗๘๙",
     tibt: "༠༡༢༣༤༥༦༧༨༩"
 };
 /**
  * Tests that number formatting is handled correctly. The function checks that the
  * digit sequences in formatted output are as specified, converted to the
  * selected numbering system, and embedded in consistent localized patterns.
  * @param {Array} locales the locales to be tested.
  * @param {Array} numberingSystems the numbering systems to be tested.
  * @param {Object} options the options to pass to Intl.NumberFormat. Options
  *     must include {useGrouping: false}, and must cause 1.1 to be formatted
  *     pre- and post-decimal digits.
  * @param {Object} testData maps input data (in ES5 9.3.1 format) to expected output strings
  *     in unlocalized format with Western digits.
  */
 function testNumberFormat(locales, numberingSystems, options, testData) {
     locales.forEach(function (locale) {
         numberingSystems.forEach(function (numbering) {
             var digits = numberingSystemDigits[numbering];
             var format = new Intl.NumberFormat([locale + "-u-nu-" + numbering], options);
             function getPatternParts(positive) {
                 var n = positive ? 1.1 : -1.1;
                 var formatted = format.format(n);
                 var oneoneRE = "([^" + digits + "]*)[" + digits + "]+([^" + digits + "]+)[" + digits + "]+([^" + digits + "]*)";
                 var match = formatted.match(new RegExp(oneoneRE));
                 if (match === null) {
                     $ERROR("Unexpected formatted " + n + " for " +
                         format.resolvedOptions().locale + " and options " +
                         JSON.stringify(options) + ": " + formatted);
                 }
                 return match;
             }
             function toNumbering(raw) {
                 return raw.replace(/[0-9]/g, function (digit) {
                     return digits[digit.charCodeAt(0) - "0".charCodeAt(0)];
                 });
             }
             function buildExpected(raw, patternParts) {
                 var period = raw.indexOf(".");
                 if (period === -1) {
                     return patternParts[1] + toNumbering(raw) + patternParts[3];
                 } else {
                     return patternParts[1] +
                         toNumbering(raw.substring(0, period)) +
                         patternParts[2] +
                         toNumbering(raw.substring(period + 1)) +
                         patternParts[3];
                 }
             }
             if (format.resolvedOptions().numberingSystem === numbering) {
                 // figure out prefixes, infixes, suffixes for positive and negative values
                 var posPatternParts = getPatternParts(true);
                 var negPatternParts = getPatternParts(false);
                 Object.getOwnPropertyNames(testData).forEach(function (input) {
                     var rawExpected = testData[input];
                     var patternParts;
                     if (rawExpected[0] === "-") {
                         patternParts = negPatternParts;
                         rawExpected = rawExpected.substring(1);
                     } else {
                         patternParts = posPatternParts;
                     }
                     var expected = buildExpected(rawExpected, patternParts);
                     var actual = format.format(input);
                     if (actual !== expected) {
                         $ERROR("Formatted value for " + input + ", " +
                         format.resolvedOptions().locale + " and options " +
                         JSON.stringify(options) + " is " + actual + "; expected " + expected + ".");
                     }
                 });
             }
         });
     });
 }
 /**
  * Return the components of date-time formats.
  * @return {Array} an array with all date-time components.
  */
 function getDateTimeComponents() {
     return ["weekday", "era", "year", "month", "day", "hour", "minute", "second", "timeZoneName"];
 }
 /**
  * Return the valid values for the given date-time component, as specified
  * by the table in section 12.1.1.
  * @param {string} component a date-time component.
  * @return {Array} an array with the valid values for the component.
  */
 function getDateTimeComponentValues(component) {
     var components = {
         weekday: ["narrow", "short", "long"],
         era: ["narrow", "short", "long"],
         year: ["2-digit", "numeric"],
         month: ["2-digit", "numeric", "narrow", "short", "long"],
         day: ["2-digit", "numeric"],
         hour: ["2-digit", "numeric"],
         minute: ["2-digit", "numeric"],
         second: ["2-digit", "numeric"],
         timeZoneName: ["short", "long"]
     };
     var result = components[component];
     if (result === undefined) {
         $ERROR("Internal error: No values defined for date-time component " + component + ".");
     }
     return result;
 }
 /**
  * Tests that the given value is valid for the given date-time component.
  * @param {string} component a date-time component.
  * @param {string} value the value to be tested.
  * @return {boolean} true if the test succeeds.
  * @exception if the test fails.
  */
 function testValidDateTimeComponentValue(component, value) {
     if (getDateTimeComponentValues(component).indexOf(value) === -1) {
         $ERROR("Invalid value " + value + " for date-time component " + component + ".");
     }
     return true;
 }
 /**
  * Verifies that the actual array matches the expected one in length, elements,
  * and element order.
  * @param {Array} expected the expected array.
  * @param {Array} actual the actual array.
  * @return {boolean} true if the test succeeds.
  * @exception if the test fails.
  */
 function testArraysAreSame(expected, actual) {
     for (i = 0; i < Math.max(actual.length, expected.length); i++) {
         if (actual[i] !== expected[i]) {
             $ERROR("Result array element at index " + i + " should be \"" +
                 expected[i] + "\" but is \"" + actual[i] + "\".");
         }
     }
     return true;
 }