diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/Array-of-surfaces.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/Array-of-surfaces.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// Check superficial features of Array.of.
+
+load(libdir + "asserts.js");
+
+var desc = Object.getOwnPropertyDescriptor(Array, "of");
+assertEq(desc.configurable, true);
+assertEq(desc.enumerable, false);
+assertEq(desc.writable, true);
+assertEq(Array.of.length, 0);
+assertThrowsInstanceOf(() => new Array.of(), TypeError);  // not a constructor
+
+// When the this-value passed in is not a constructor, the result is an array.
+for (let v of [undefined, null, false, "cow"])
+    assertEq(Array.isArray(Array.of.call(v)), true);