1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Locale/instance-extensibility.js b/js/src/tests/test262/intl402/Locale/instance-extensibility.js
new file mode 100644
index 0000000000..99a10021cb
--- /dev/null
+++ b/js/src/tests/test262/intl402/Locale/instance-extensibility.js
@@ -0,0 +1,22 @@
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-intl.locale
+description: >
+    Intl.Locale instance object extensibility
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Unless specified otherwise, the [[Extensible]] internal slot
+  of a built-in object initially has the value true.
+features: [Intl.Locale]
+---*/
+
+assert.sameValue(
+  Object.isExtensible(new Intl.Locale('en')),
+  true,
+  "Object.isExtensible(new Intl.Locale('en')) returns true"
+);
+
+reportCompare(0, 0);