1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/tests/test262/intl402/DateTimeFormat/supportedLocalesOf/builtin.js b/js/src/tests/test262/intl402/DateTimeFormat/supportedLocalesOf/builtin.js
new file mode 100644
index 0000000000..5af3ea6504
--- /dev/null
+++ b/js/src/tests/test262/intl402/DateTimeFormat/supportedLocalesOf/builtin.js
@@ -0,0 +1,30 @@
+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the license found in the LICENSE file.
+
+/*---
+es5id: 12.2.2_L15
+description: >
+    Tests that Intl.DateTimeFormat.supportedLocalesOf meets the
+    requirements for built-in objects defined by the introduction of
+    chapter 17 of the ECMAScript Language Specification.
+author: Norbert Lindenberg
+includes: [isConstructor.js]
+features: [Reflect.construct]
+---*/
+
+assert.sameValue(Object.prototype.toString.call(Intl.DateTimeFormat.supportedLocalesOf), "[object Function]",
+                 "The [[Class]] internal property of a built-in function must be " +
+                 "\"Function\".");
+
+assert(Object.isExtensible(Intl.DateTimeFormat.supportedLocalesOf),
+       "Built-in objects must be extensible.");
+
+assert.sameValue(Object.getPrototypeOf(Intl.DateTimeFormat.supportedLocalesOf), Function.prototype);
+
+assert.sameValue(Intl.DateTimeFormat.supportedLocalesOf.hasOwnProperty("prototype"), false,
+                 "Built-in functions that aren't constructors must not have a prototype property.");
+
+assert.sameValue(isConstructor(Intl.DateTimeFormat.supportedLocalesOf), false,
+                 "Built-in functions don't implement [[Construct]] unless explicitly specified.");
+
+reportCompare(0, 0);