1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/Segmenter/instance/extensibility.js b/js/src/tests/test262/intl402/Segmenter/instance/extensibility.js
new file mode 100644
index 0000000000..2254e7f996
--- /dev/null
+++ b/js/src/tests/test262/intl402/Segmenter/instance/extensibility.js
@@ -0,0 +1,22 @@
+// |reftest| skip-if(!Intl.Segmenter) -- Intl.Segmenter is not enabled unconditionally
+// Copyright 2018 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-Intl.Segmenter
+description: Intl.Segmenter 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.Segmenter]
+---*/
+
+assert.sameValue(
+  Object.isExtensible(new Intl.Segmenter()),
+  true,
+  "Object.isExtensible(new Intl.Segmenter()) returns true"
+);
+
+reportCompare(0, 0);