Reimbursement when you pass a certification exam seems to be the norm in my experience.
Workshops or seminars that the company wants pay for...they'll send you to.
Unfortunately...adding to your resume benefits your future job searches more than your present employer.
"...all attempts to take the test should be paid by the company because it should be a company investment in the employee"...really?
How many times do you get to fail an exam before the boss starts rechecking your resume?