I am relatively sure they are developing a test that will confirm if you ever had the virus.
Very important to see who is immune to the illness for numerous reasons. Assuming you are immune once you have had it.
They are, they made the huge error of saying it would be available in a matter of a week or two a few weeks ago. Now it is looking like the end of April.
Anti-body tests in weeks? Unlikely. Vaccine in 12-18 months. Unlikely, but not impossible.