Unit testing for visuals in Power B

Hi! I am looking for a way to unit test exisiting Power Bi visuals.

I have seen the page describing how to add unit tests (https://learn.microsoft.com/en-us/power-bi/developer/visuals/unit-tests-introduction) but this seems to be limited to building customised visuals from scratch. I would like to test if new deployments have any impact on all visuals on existing reports, e.g. track changes in color, positions, heights, titles, etc. Is there a way to extract the settings of all the visuals from exisitng report and create a unit test based on them? Or any another way to do that kind of test?