v8/test/intl/general/getCanonicalLocales.js
Jungshik Shin 2abb31a9d6 Use ICU to validate and canonicalize lang tag
- Get rid of an unnecessary call to uloc_canonicalize in js-locale.
- Do not use regex, but rely on ICU for the structrural validity check
with Chrome's ICU or ICU 63 or newer. Otherwise, continue to use regex.

This became possible thanks to a couple of bug fixes in ICU ToT that
were cherry-picked for Chromium's ICU.

Not yet done is to change js-locale to use CanonicalizeLocale().
That will make a few more tests pass.

Bug: v8:8135
Test: test262/intl402/Intl/getCanonicalLocales/*
Test: test262/intl402/Locale/*
Cq-Include-Trybots: luci.v8.try:v8_linux_noi18n_rel_ng
Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I45c10b298fb041e0b39a4d96309c68a7966f91c2
Reviewed-on: https://chromium-review.googlesource.com/c/1215223
Commit-Queue: Jungshik Shin <jshin@chromium.org>
Reviewed-by: Sathya Gunasekaran <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56399}
2018-10-05 08:26:39 +00:00

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JavaScript

// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Ignore the first tag when checking for duplicate subtags.
assertDoesNotThrow(() => Intl.getCanonicalLocales("foobar-foobar"));
// Ignore duplicate subtags in different namespaces; eg, 'a' vs 'u'.
assertDoesNotThrow(() => Intl.getCanonicalLocales("en-a-ca-Chinese-u-ca-Chinese"));
// Ignore duplicate subtags in U-extension as well. Only the first count.
// See RFC 6067 for details.
assertDoesNotThrow(() => Intl.getCanonicalLocales("en-u-ca-gregory-ca-chinese"));
assertEquals("en-u-ca-gregory", Intl.getCanonicalLocales("en-u-ca-gregory-ca-chinese")[0]);
// Check duplicate subtags (after the first tag) are detected.
assertThrows(() => Intl.getCanonicalLocales("en-foobar-foobar"), RangeError);