No surprise here

The surprise would be if that's true.

He has a great immune system.  The best immune system the world has ever seen.  It's magical.

...but hey, do what you want...you will anyway.

UPDATE:

The White House did not explain on Saturday why it issued a statement saying no test was needed if the president was in fact taking one.

  NYT

Either because he wasn't actually taking one, or he'd already taken one and tested positive.

The president has sought for weeks to play down the severity of the outbreak and been especially sensitive about giving the impression that he himself was at risk. Indeed, several advisers to Mr. Trump on Saturday privately expressed irritation at Ms. McDaniel for publicly acknowledging her illness.

UPDATE:

Squandering. Is that what it is?  How can you squander something you never had?