1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/supportedLocalesOf-empty-and-undefined.js b/js/src/tests/test262/intl402/supportedLocalesOf-empty-and-undefined.js
new file mode 100644
index 0000000000..2959f5ba7b
--- /dev/null
+++ b/js/src/tests/test262/intl402/supportedLocalesOf-empty-and-undefined.js
@@ -0,0 +1,21 @@
+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+es5id: 9.2.1_1
+description: >
+    Tests that canonicalization of locale lists treats undefined and
+    empty lists the same.
+author: Norbert Lindenberg
+includes: [testIntl.js]
+---*/
+
+testWithIntlConstructors(function (Constructor) {
+    var supportedForUndefined = Constructor.supportedLocalesOf(undefined);
+    var supportedForEmptyList = Constructor.supportedLocalesOf([]);
+    assert.sameValue(supportedForUndefined.length, supportedForEmptyList.length, "Supported locales differ between undefined and empty list input.");
+    // we don't compare the elements because length should be 0 - let's just verify that
+    assert.sameValue(supportedForUndefined.length, 0, "Internal test error: Assumption about length being 0 is invalid.");
+});
+
+reportCompare(0, 0);