>>> Start pop test for object: 1,2,5,10,17
0 iteration. Poped:17 obj.length:4
1 iteration. Poped:10 obj.length:3
2 iteration. Poped:5 obj.length:2
3 iteration. Poped:2 obj.length:1
4 iteration. Poped:1 obj.length:0
5 iteration. Poped:undefined obj.length:0
6 iteration. Poped:undefined obj.length:0
<<< Stop pop test for object: 
>>> Start pop test for object: [object Object]
0 iteration. Poped:17 obj.length:4
1 iteration. Poped:10 obj.length:3
2 iteration. Poped:5 obj.length:2
3 iteration. Poped:2 obj.length:1
4 iteration. Poped:1 obj.length:0
5 iteration. Poped:undefined obj.length:0
6 iteration. Poped:undefined obj.length:0
<<< Stop pop test for object: [object Object]