PMI issued a free (only PMI registration is necessary) PMP preparation test.
As a PMP trainer I immediately tried it. I find very positive to have a vendor-based sample test. It gives a candidate readiness baseline. In case of an incorrect answer, an explanation is shown immediately.
The test seems to be a bit more simple than a real PMP(r) test, but that is my own “feeling”.
Anyway, I recommend all candidates to check your current readiness with this sample test.