mirror of https://github.com/tc39/test262.git
51 lines
1.9 KiB
JavaScript
51 lines
1.9 KiB
JavaScript
|
// Copyright 2020 Jeff Walden, Mozilla Corporation. All rights reserved.
|
||
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
||
|
|
|
||
|
|
/*---
|
||
|
|
esid: sec-isstructurallyvalidlanguagetag
|
||
|
|
description: >
|
||
|
|
Verifies that just as duplicate variants in a tag ("en-emodeng-emodeng") make
|
||
|
|
the tag structurally invalid, so too do duplicate variants in the tlang
|
||
|
|
component of an otherwise structurally valid tag ("de-t-emodeng-emodeng"),
|
||
|
|
make it structurally invalid.
|
||
|
|
info: |
|
||
|
|
if a `transformed_extensions` component that contains a `tlang` component is
|
||
|
|
present, then
|
||
|
|
the `tlang` component contains no duplicate `unicode_variant_subtag`
|
||
|
|
subtags.
|
||
|
|
features: [Intl.Locale]
|
||
|
|
---*/
|
||
|
|
|
||
|
|
assert.sameValue(typeof Intl.Locale, "function");
|
||
|
|
|
||
|
|
function mustReject(tag) {
|
||
|
|
assert.throws(RangeError, () => {
|
||
|
|
// Direct matches are rejected.
|
||
|
|
new Intl.Locale(tag);
|
||
|
|
}, `tag "${tag}" must be considered structurally invalid`);
|
||
|
|
}
|
||
|
|
|
||
|
|
// BCP47 since forever, and ECMA-402 as consequence, do not consider tags that
|
||
|
|
// contain duplicate variants to be structurally valid. This restriction also
|
||
|
|
// applies within the |tlang| component (indicating the source locale from which
|
||
|
|
// relevant content was transformed) of a broader language tag.
|
||
|
|
|
||
|
|
// Direct matches are rejected.
|
||
|
|
mustReject("de-t-en-emodeng-emodeng");
|
||
|
|
// Case-insensitive matches are also rejected.
|
||
|
|
mustReject("de-t-en-Emodeng-emodeng");
|
||
|
|
// ...and in either order.
|
||
|
|
mustReject("de-t-en-emodeng-Emodeng");
|
||
|
|
|
||
|
|
// Repeat the above tests with additional variants interspersed at each point
|
||
|
|
// for completeness.
|
||
|
|
mustReject("de-t-en-variant-emodeng-emodeng");
|
||
|
|
mustReject("de-t-en-variant-Emodeng-emodeng");
|
||
|
|
mustReject("de-t-en-variant-emodeng-Emodeng");
|
||
|
|
mustReject("de-t-en-emodeng-variant-emodeng");
|
||
|
|
mustReject("de-t-en-Emodeng-variant-emodeng");
|
||
|
|
mustReject("de-t-en-emodeng-variant-Emodeng");
|
||
|
|
mustReject("de-t-en-emodeng-emodeng-variant");
|
||
|
|
mustReject("de-t-en-Emodeng-emodeng-variant");
|
||
|
|
mustReject("de-t-en-emodeng-Emodeng-variant");
|