Here is the issue: when we run ruby test script from rubymine, the output is unclear:

John Kaster commented 13 May 2021 02:19

It's unlikely I'll be able to extract a sample project to share with source code, so it sounds like we'll either have to live with it or hack it.

How to disable it?

To solve this , just Delete testing plugin folder from rubymine:

Then you can see normal output clearly:

May this will help.