--- /dev/null
+'use strict';
+
+var f = function (a, b) { return ['a', arguments.length, a, b]; }
+ , g = function (a) { return ['b', arguments.length].concat(a); }
+ , h = function (a) { return ['c', arguments.length].concat(a); };
+
+module.exports = function (t, a) {
+ a.deep(t.call(h, g, f)(1, 2), ['c', 1, 'b', 1, 'a', 2, 1, 2]);
+};