diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arrow-functions/church-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arrow-functions/church-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+// Church-Peano integers
+
+var Zero = f => x => x;
+var Succ = n => f => x => n(f)(f(x));
+var Add = a => b => f => x => a(f)(b(f)(x));
+var Mul = a => b => f => x => a(b(f))(x);
+var Exp = a => b => b(a);
+
+var n = f => f(k => k + 1)(0);
+
+assertEq(n(Zero), 0);
+assertEq(n(Succ(Zero)), 1);
+assertEq(n(Succ(Succ(Zero))), 2);
+
+var Three = Succ(Succ(Succ(Zero)));
+var Five = Succ(Succ(Three));
+assertEq(n(Add(Three)(Five)), 8);
+assertEq(n(Mul(Three)(Five)), 15);
+assertEq(n(Exp(Three)(Five)), 243);