Being a former professor, to do good tests is really hard. The vast majority of take home tests are quite poor that I have seen (in data science at least).
I am skeptical most people even attempt to do their own tests they create, I commonly see people suggest things will be 2-4 hours when they will be a day or two of work, https://www.bryanshalloway.com/2020/10/27/should-you-use-an-....