You know what's sad? This ought to have been widespread knowledge by now.
When Tanzanian president did this same thing in the very beginning, wanting to test the tests, he sent various random samples into the lab, papaya among others, and papaya and the rest came positive for COVID, no one took him seriously, I wonder if it was people thinking, "oh, it's a third world country", I knew it was legit, and it annoyed me so much that nobody paid attention. The man holds a doctorate in Chemistry! But when Europeans are telling the same thing, they will now be taken seriously. We should've trusted Tanzanian president - there would've been way less headache for all of us! The Little Prince's asteroid and the Turkish astronaut comes to mind, whoever's read the book...