.has() function not working in if statement (jQuery)

I have this code:

if($('.workflow-item:eq(0)').has(".tube-wrapper")){
 itemresT = 0; 
 console.log('0 has tube')}

else if($('.workflow-item').eq(1).has(".tube-wrapper")){
 itemResT = 1; 
 console.log('1 has tube')}

else if($('.workflow-item').eq(2).has(".tube-wrapper")){
 itemResT = 2; 
 console.log('2 has tube')}

else if($('.workflow-item').eq(3).has(".tube-wrapper")){
 itemResT = 3; 
 console.log('3 has tube')}

else {}

It's quite easy, it checks the four .workflow-item if they contain the element .tube-wrapper.

In my case, .workflow-item number 3 contains the .tube-wrapper, so it should return '2 has tube'. But, it returns '0 has tube' everytime. Even when I put the .tube-wrapper in .workflow-item number 4.