michael@0: function testNestedForIn() {
michael@0:     var a = {x: 1, y: 2, z: 3};
michael@0:     var s = '';
michael@0:     for (var p1 in a)
michael@0:         for (var p2 in a)
michael@0:             s += p1 + p2 + ' ';
michael@0:     return s;
michael@0: }
michael@0: assertEq(testNestedForIn(), 'xx xy xz yx yy yz zx zy zz ');