diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/proxy/testDirectProxyConstructor.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/proxy/testDirectProxyConstructor.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+load(libdir + "asserts.js");
+
+// Throw a TypeError if Proxy is called with less than two arguments
+assertThrowsInstanceOf(function () { Proxy(); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy(); }, TypeError);
+assertThrowsInstanceOf(function () { Proxy({}); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy({}); }, TypeError);
+
+// Throw a TypeError if the first argument is not a non-null object
+assertThrowsInstanceOf(function () { Proxy(0, {}); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy(0, {}); }, TypeError);
+assertThrowsInstanceOf(function () { Proxy(null, {}); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy(null, {}); }, TypeError);
+
+// Throw a TypeError if the second argument is not a non-null object
+assertThrowsInstanceOf(function () { Proxy({}, 0); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy({}, 0); }, TypeError);
+assertThrowsInstanceOf(function () { Proxy({}, null); }, TypeError);
+assertThrowsInstanceOf(function () { new Proxy({}, null); }, TypeError);
+
+// Result of the call should be an object
+assertEq(typeof Proxy({}, {}), 'object');
+assertEq(typeof new Proxy({}, {}), 'object');