1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Intl/getCanonicalLocales/duplicates.js b/js/src/tests/test262/intl402/Intl/getCanonicalLocales/duplicates.js
new file mode 100644
index 0000000000..a3697544c0
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+++ b/js/src/tests/test262/intl402/Intl/getCanonicalLocales/duplicates.js
@@ -0,0 +1,20 @@
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-intl.getcanonicallocales
+description: Tests the getCanonicalLocales function for duplicate locales scenario.
+info: |
+  8.2.1 Intl.getCanonicalLocales (locales)
+  1. Let ll be ? CanonicalizeLocaleList(locales).
+  2. Return CreateArrayFromList(ll).
+includes: [compareArray.js]
+---*/
+
+assert.compareArray(Intl.getCanonicalLocales(
+  ['ab-cd', 'ff', 'de-rt', 'ab-Cd']), ['ab-CD', 'ff', 'de-RT']);
+
+var locales = Intl.getCanonicalLocales(['en-US', 'en-US']);
+assert.compareArray(locales, ['en-US'], 'en-US');
+
+reportCompare(0, 0);