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+// Copyright 2011-2012 Norbert Lindenberg. All rights reserved.
+// Copyright 2012  Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * @description Tests that language tags are canonicalized in return values.
+ * @author Norbert Lindenberg
+ */
+
+$INCLUDE("testIntl.js");
+
+var canonicalizedTags = {
+    "de": ["de"],
+    "de-DE": ["de-DE", "de"],
+    "DE-de": ["de-DE", "de"],
+    "cmn": ["cmn"],
+    "CMN-hANS": ["cmn-Hans", "cmn"],
+    "cmn-hans-cn": ["cmn-Hans-CN", "cmn-Hans", "cmn"],
+    "es-419": ["es-419", "es"],
+    "es-419-u-nu-latn": ["es-419-u-nu-latn", "es-419", "es", "es-u-nu-latn"],
+    // -u-ca is incomplete, so it will not show up in resolvedOptions().locale
+    "cmn-hans-cn-u-ca-t-ca-x-t-u": ["cmn-Hans-CN-t-ca-u-ca-x-t-u", "cmn-Hans-CN-t-ca-x-t-u", "cmn-Hans-CN-t-ca-x-t", "cmn-Hans-CN-t-ca", "cmn-Hans-CN", "cmn-Hans", "cmn"],
+    "enochian-enochian": ["enochian-enochian", "enochian"],
+    "de-gregory-u-ca-gregory": ["de-gregory-u-ca-gregory", "de-gregory", "de-u-ca-gregory", "de"],
+    "no-nyn": ["nn"],
+    "i-klingon": ["tlh"],
+    "sgn-GR": ["gss"],
+    "ji": ["yi"],
+    "de-DD": ["de-DE", "de"],
+    "zh-hak-CN": ["hak-CN", "hak"],
+    "sgn-ils": ["ils"],
+    "in": ["id"]
+};
+
+// make sure the data above is correct
+Object.getOwnPropertyNames(canonicalizedTags).forEach(function (tag) {
+    canonicalizedTags[tag].forEach(function (canonicalTag) {
+        if (!isCanonicalizedStructurallyValidLanguageTag(canonicalTag)) {
+            $ERROR("Test data \"" + canonicalTag + "\" is not canonicalized and structurally valid language tag.");
+        }
+    });
+});
+
+// now the actual test
+testWithIntlConstructors(function (Constructor) {
+    var defaultLocale = new Constructor().resolvedOptions().locale;
+    Object.getOwnPropertyNames(canonicalizedTags).forEach(function (tag) {
+        // use lookup locale matcher to keep the set of possible return values predictable
+
+        // Variant 1: construct an object and see whether its locale is canonicalized.
+        // In this variant, shortened forms or the default locale may be returned
+        var object = new Constructor([tag], {localeMatcher: "lookup"});
+        var locale = object.resolvedOptions().locale;
+        if (canonicalizedTags[tag].indexOf(locale) === -1 && locale !== defaultLocale) {
+            $ERROR("For " + tag + " got " + locale + "; expected one of " +
+                canonicalizedTags[tag].join(", ") + ".");
+        }
+        
+        // Variant 2: get the supported locales. If the tag is supported, it should be returned canonicalized but unshortened
+        var supported = Constructor.supportedLocalesOf([tag]);
+        if (supported.length > 0 && supported[0] !== canonicalizedTags[tag][0]) {
+            $ERROR("For " + tag + " got " + supported[0] + "; expected " +
+                canonicalizedTags[tag][0] + ".");
+        }            
+    });
+    return true;
+});
+