1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/main.js b/js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/main.js
new file mode 100644
index 0000000000..23afcb1099
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+++ b/js/src/tests/test262/intl402/PluralRules/supportedLocalesOf/main.js
@@ -0,0 +1,25 @@
+// Copyright 2016 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.PluralRules.supportedLocalesOf
+description: >
+    Tests that Intl.PluralRules has a supportedLocalesOf property, and
+    it works as planned.
+author: Zibi Braniecki
+---*/
+
+var defaultLocale = new Intl.PluralRules().resolvedOptions().locale;
+var notSupported = 'zxx'; // "no linguistic content"
+var requestedLocales = [defaultLocale, notSupported];
+    
+var supportedLocales;
+
+assert(Intl.PluralRules.hasOwnProperty('supportedLocalesOf'), "Intl.PluralRules doesn't have a supportedLocalesOf property.");
+    
+supportedLocales = Intl.PluralRules.supportedLocalesOf(requestedLocales);
+assert.sameValue(supportedLocales.length, 1, 'The length of supported locales list is not 1.');
+
+assert.sameValue(supportedLocales[0], defaultLocale, 'The default locale is not returned in the supported list.');
+
+reportCompare(0, 0);