michael@0: function check(expected, ...rest) {
michael@0:     assertEq(expected.toString(), rest.toString());
michael@0: }
michael@0: 
michael@0: assertEq(check.length, 1);
michael@0: check([]);
michael@0: check(['a', 'b'], 'a', 'b');
michael@0: check(['a', 'b', 'c', 'd'], 'a', 'b', 'c', 'd');
michael@0: check.apply(null, [['a', 'b'], 'a', 'b'])
michael@0: check.call(null, ['a', 'b'], 'a', 'b')
michael@0: 
michael@0: var g = newGlobal();
michael@0: g.eval("function f(...rest) { return rest; }");
michael@0: var a = g.f(1, 2, 3);
michael@0: assertEq(a instanceof g.Array, true);