mirror of https://github.com/tc39/test262.git
45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
// Copyright 2020 Jeff Walden, Mozilla Corporation. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-isstructurallyvalidlanguagetag
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description: >
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Verifies that duplicate variants in a tag ("en-emodeng-emodeng") make the tag
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structurally invalid.
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info: |
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the `unicode_language_id` within _locale_ contains no duplicate
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`unicode_variant_subtag` subtags
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features: [Intl.Locale]
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---*/
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assert.sameValue(typeof Intl.Locale, "function");
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function mustReject(tag) {
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assert.throws(RangeError, () => {
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// Direct matches are rejected.
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new Intl.Locale(tag);
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}, `tag "${tag}" must be considered structurally invalid`);
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}
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// BCP47 since forever, and ECMA-402 as consequence, do not consider tags that
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// contain duplicate variants to be structurally valid.
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// Direct matches are rejected.
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mustReject("en-emodeng-emodeng");
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// Case-insensitive matches are also rejected.
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mustReject("en-Emodeng-emodeng");
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// ...and in either order.
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mustReject("en-emodeng-Emodeng");
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// Repeat the above tests with additional variants interspersed at each point
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// for completeness.
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mustReject("en-variant-emodeng-emodeng");
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mustReject("en-variant-Emodeng-emodeng");
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mustReject("en-variant-emodeng-Emodeng");
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mustReject("en-emodeng-variant-emodeng");
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mustReject("en-Emodeng-variant-emodeng");
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mustReject("en-emodeng-variant-Emodeng");
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mustReject("en-emodeng-emodeng-variant");
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mustReject("en-Emodeng-emodeng-variant");
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mustReject("en-emodeng-Emodeng-variant");
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