If you want to start with dtest-testing, just have a look at the mytest.pwn in the filterscripts folder. It shows how to create code in a dtest testcase.

The instructions how to start the tests then, are in the readme.

If you have any further questions, feel free to ask ;).

idk if there is but it runs with dutils, Dini, and Dudb.

is there any tut how to use it?