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-rw-r--r--js/src/tests/Intl/four-letter-language-codes.js20
1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/Intl/four-letter-language-codes.js b/js/src/tests/Intl/four-letter-language-codes.js
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--- /dev/null
+++ b/js/src/tests/Intl/four-letter-language-codes.js
@@ -0,0 +1,20 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// So many non-existent four letter language codes to pick from.
+const languageTags = {
+ "Flob": "flob",
+ "ZORK": "zork",
+ "Blah-latn": "blah-Latn",
+ "QuuX-latn-us": "quux-Latn-US",
+ "SPAM-gb-x-Sausages-BACON-eggs": "spam-GB-x-sausages-bacon-eggs",
+};
+
+for (let [tag, canonical] of Object.entries(languageTags)) {
+ assertEq(Intl.getCanonicalLocales(tag)[0], canonical);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);