Well, let's start...I've done tests for job interviews before on other platforms, let's say hackerrank, I trained myself for several days, then the test that I've got from the company was doable, as it had somthing in common with what I did on the platform in order to train myself.
So when applying for a FE developer position at TrustYou, I tried to do the same. I trained first on qualified?? Hmm..train...let's see, you only provide one type of exercise for training which on a scale from 1 to 10 of difficulty is 1 and you give 10 difficulty tests :).
So, when I started to do my test on qualified, as I wanted to work at TrustYou, so I was motivated, I've got 3 problems, impossible to do in 1,5 hours. I gave it up quick, as it is silly to waste 1,5 hours of my time when seeing the test.
Those problems also had nothing in common with how qualified let's you train for it. Same unfortunately happens with codility. Soon, companies will wake up and see it's not the developers, but the platforms who are not prepared enough ;).
I mean, you know, I also asked the opinion of other colleagues of mine which happen to have successful jobs at successful companies. They agree with what I said here. Just curious, how many employees of a current company would achieve this test of yours. More than 10% I wouldn't expect, actually...much much less and this should say a lot about a testing platform. Review collected by and hosted on G2.com.