Oh, someone else below suggested that DBT in OP may be this: https://docs.getdbt.com/ .
Well... I don't know anything about this tool, but from cursory reading, this is the correctness kind of testing that is meant to examine whether the way you defined the schema actually leads to the results you expect in the data. Well... it's not an interesting kind of testing, at least not for me. So, I don't know much about it. Also, while, obviously, I'm not familiar with this newer tool, I wouldn't trust much someone who reused the name of an existing tool to do something completely unrelated in the same domain. It just feels like these people don't have a very good familiarity with the subject because they caused this confusion.