I don’t know why anyone would want to get a test.
I would understand why someone on the Left would; publicity or to make PDJT look bad, but other than that...
To be able to tell others that he/she may have been exposed to COVID. Really no way to know for sure without the test.
You have to have a medical practitioner exam you to be diagnosed with the disease Covid-19.
Besides, even the tests are notoriously unreliable in their results: