It's quite an invasive procedure (but not painful). They say if you don't gag and splutter, you haven't been tested correctly.
When I was inclined to be tested, the tests weren't available because my name wasn't Tom Hanks. Now I wouldn't get tested unless required to e.g. by my employer.
This validates the views set out in article.
L2R2R, so you wouldn't get tested if you had symptoms? Not knowing your occupation, would you still front up to work with symptoms?