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Update the test based on v35 of UTS35 

see http://unicode.org/reports/tr35/#LocaleId_Canonicalization
@anba
This commit is contained in:
Frank Yung-Fong Tang 2020-11-17 12:58:02 -08:00 committed by Rick Waldron
parent de091de9f6
commit 7c9480476e
1 changed files with 16 additions and 19 deletions
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35
test/intl402/Locale/likely-subtags-grandfathered.js
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@ -123,15 +123,15 @@ const extras = [
"x-private",
];
for (const {tag} of regularGrandfathered) {
for (const {tag, canonical} of regularGrandfathered) {
const priv = "-x-0";
const tagMax = new Intl.Locale(tag + priv).maximize().toString().slice(0, -priv.length);
const tagMin = new Intl.Locale(tag + priv).minimize().toString().slice(0, -priv.length);
const tagMax = new Intl.Locale(canonical + priv).maximize().toString().slice(0, -priv.length);
const tagMin = new Intl.Locale(canonical + priv).minimize().toString().slice(0, -priv.length);
for (const extra of extras) {
const loc = new Intl.Locale(tag + "-" + extra);
let canonical = tag + "-" + extra;
let canonicalWithExtra = canonical + "-" + extra;
let canonicalMax = tagMax + "-" + extra;
let canonicalMin = tagMin + "-" + extra;
@ -139,7 +139,7 @@ for (const {tag} of regularGrandfathered) {
if (/^[a-z0-9]{5,8}|[0-9][a-z0-9]{3}$/i.test(extra)) {
const sorted = s => s.replace(/(-([a-z0-9]{5,8}|[0-9][a-z0-9]{3}))+$/i,
m => m.split("-").sort().join("-"));
canonical = sorted(canonical);
canonicalWithExtra = sorted(canonicalWithExtra);
canonicalMax = sorted(canonicalMax);
canonicalMin = sorted(canonicalMin);
}
@ -156,20 +156,17 @@ for (const {tag} of regularGrandfathered) {
// what needs to happen next.
//
// From <http://unicode.org/reports/tr35/#Language_Tag_to_Locale_Identifier>:
//
// > A valid [BCP47] language tag can be converted to a valid Unicode BCP 47 locale
// > identifier according to Annex C. LocaleId Canonicalization
//
// From <http://unicode.org/reports/tr35/#LocaleId_Canonicalization>
// > The languageAlias, scriptAlias, territoryAlias, and variantAlias elements are used
// > as rules to transform an input source localeId. The first step is to transform the
// > languageId portion of the localeId.
//
// > If the BCP 47 primary language subtag matches the type attribute of a languageAlias
// > element in Supplemental Data, replace the language subtag with the replacement value.
// > 1. ...
// > 2. Five special deprecated grandfathered codes (such as i-default) are in type
// attributes, and are also replaced.
// > 3. ...
//
// So let's assume grandfathered tags are treated as 'primary language subtag' if and only
// if no additional subtags are present. Because in all other cases, we don't really have a
// grandfathered tag, but only some arbitrary combination of random subtags.
//
// Basically what we expect here is that only grandfathered without any additional subtags
// are canonicalised to their modern form and in all other cases they're left as is.
// For regular grandfathered tags, "lojban", "gaulish", "guoyu", "hakka", and "xiang" will
// therefore be considered as the "variant" subtag and be replaced by rules in languageAlias.
//
// Not all language tag processor will pass this test, for example because they don't order
// variant subtags in alphabetical order or they're too eager when detecting grandfathered
@ -187,7 +184,7 @@ for (const {tag} of regularGrandfathered) {
//
// So, if your implementation fails this assertion, but you still like to test the rest of
// this file, a pull request to split this file seems the way to go!
assert.sameValue(loc.toString(), canonical);
assert.sameValue(loc.toString(), canonicalWithExtra);
assert.sameValue(loc.maximize().toString(), canonicalMax);
assert.sameValue(loc.maximize().maximize().toString(), canonicalMax);