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Fix tests on {localeMatcher: "lookup"} (#3008)

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* Fix test for only {localeMatcher: "lookup"}

The expectation that "sr-Thai-RS" would be returned is only true with the 
9.2.2 BestAvailableLocale ( availableLocales, locale )
https://tc39.es/ecma402/#sec-bestavailablelocale
algorithm used by 9.2.3 LookupMatcher ( availableLocales, requestedLocales )
https://tc39.es/ecma402/#sec-lookupmatcher

The default for localeMatcher is "best fit" but not "lookup" for all Intl objects.

And for 9.2.4 BestFitMatcher ( availableLocales, requestedLocales )
https://tc39.es/ecma402/#sec-bestfitmatcher
It may not match "sr-Thai-RS" for "sr"  and return ["de", "zh-CN"] instead. Therefore, we need to change this test to only test on {localeMatcher: "lookup"}

* Add option to getLocaleSupportInfo

Needed to test different localeMatcher

* only test for "lookup" localeMatcher

* Get the info based on the localeMatcher

* pass in localeMatcher to getLocaleSupportInfo
This commit is contained in:
Frank Yung-Fong Tang 2021-06-24 10:37:33 -07:00 committed by GitHub
parent 26cf753e74
commit 9997a26c7d
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5 changed files with 13 additions and 12 deletions
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5
harness/testIntl.js
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@ -128,12 +128,13 @@ function taintArray() {
* Gets locale support info for the given constructor object, which must be one
* of Intl constructors.
* @param {object} Constructor the constructor for which to get locale support info
* @param {object} options the options while calling the constructor
* @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) {
function getLocaleSupportInfo(Constructor, options) {
var languages = ["zh", "es", "en", "hi", "ur", "ar", "ja", "pa"];
var scripts = ["Latn", "Hans", "Deva", "Arab", "Jpan", "Hant", "Guru"];
var countries = ["CN", "IN", "US", "PK", "JP", "TW", "HK", "SG", "419"];
@ -163,7 +164,7 @@ function getLocaleSupportInfo(Constructor) {
var unsupported = [];
for (i = 0; i < allTags.length; i++) {
var request = allTags[i];
var result = new Constructor([request], {localeMatcher: "lookup"}).resolvedOptions().locale;
var result = new Constructor([request], options).resolvedOptions().locale;
if (request === result) {
supported.push(request);
} else if (request.indexOf(result) === 0) {

2
test/intl402/Segmenter/constructor/supportedLocalesOf/locales-specific.js
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@ -19,4 +19,4 @@ assert.sameValue(typeof Intl.Segmenter.supportedLocalesOf, "function",
assert.compareArray(Intl.Segmenter.supportedLocalesOf("sr"), ["sr"]);
const multiLocale = ["sr-Thai-RS", "de", "zh-CN"];
assert.compareArray(Intl.Segmenter.supportedLocalesOf(multiLocale), multiLocale);
assert.compareArray(Intl.Segmenter.supportedLocalesOf(multiLocale, {localeMatcher: "lookup"}), multiLocale);

3
test/intl402/fallback-locales-are-supported.js
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@ -11,7 +11,8 @@ includes: [testIntl.js]
---*/
testWithIntlConstructors(function (Constructor) {
var info = getLocaleSupportInfo(Constructor);
// The test is only valid under "lookup" localeMatcher
var info = getLocaleSupportInfo(Constructor, {localeMatcher: "lookup"});
for (var locale of info.supported) {
var match = /^([a-z]{2,3})(-[A-Z][a-z]{3})?(-(?:[A-Z]{2}|[0-9]{3}))?$/.exec(locale);
assert.notSameValue(match, null, "Locale " + locale + " is supported, but can't be parsed.")

3
test/intl402/supportedLocalesOf-consistent-with-resolvedOptions.js
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@ -11,9 +11,9 @@ includes: [testIntl.js]
---*/
testWithIntlConstructors(function (Constructor) {
var info = getLocaleSupportInfo(Constructor);
// this test should work equally for both matching algorithms
["lookup", "best fit"].forEach(function (matcher) {
var info = getLocaleSupportInfo(Constructor, {localeMatcher: matcher});
var supportedByConstructor = info.supported.concat(info.byFallback);
var supported = Constructor.supportedLocalesOf(supportedByConstructor,
{localeMatcher: matcher});
@ -28,6 +28,7 @@ testWithIntlConstructors(function (Constructor) {
});
// this test is only valid for lookup - best fit may find additional locales supported
var info = getLocaleSupportInfo(Constructor, {localeMatcher: "lookup"});
var unsupportedByConstructor = info.unsupported;
var supported = Constructor.supportedLocalesOf(unsupportedByConstructor,
{localeMatcher: "lookup"});

12
test/intl402/supportedLocalesOf-unicode-extensions-ignored.js
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@ -11,20 +11,18 @@ includes: [testIntl.js]
---*/
testWithIntlConstructors(function (Constructor) {
var info = getLocaleSupportInfo(Constructor);
// this test should work equally for both matching algorithms
["lookup", "best fit"].forEach(function (matcher) {
var opt = {localeMatcher: matcher};
var info = getLocaleSupportInfo(Constructor, opt);
var allLocales = info.supported.concat(info.byFallback, info.unsupported);
allLocales.forEach(function (locale) {
var validExtension = "-u-co-phonebk-nu-latn";
var invalidExtension = "-u-nu-invalid";
var supported1 = Constructor.supportedLocalesOf([locale],
{localeMatcher: matcher});
var supported2 = Constructor.supportedLocalesOf([locale + validExtension],
{localeMatcher: matcher});
var supported3 = Constructor.supportedLocalesOf([locale + invalidExtension],
{localeMatcher: matcher});
var supported1 = Constructor.supportedLocalesOf([locale], opt);
var supported2 = Constructor.supportedLocalesOf([locale + validExtension], opt));
var supported3 = Constructor.supportedLocalesOf([locale + invalidExtension], opt));
if (supported1.length === 1) {
assert.sameValue(supported2.length, 1, "#1.1: Presence of Unicode locale extension sequence affects whether locale " + locale + " is considered supported with matcher " + matcher + ".");
assert.sameValue(supported3.length, 1, "#1.2: Presence of Unicode locale extension sequence affects whether locale " + locale + " is considered supported with matcher " + matcher + ".");