Default bundler gem inverts filename tests since 2.3.0 - Dec 2021

[AlexB52]

Bundler decided to change the most used naming behaviour for Minitest files from "test/**/*_test.rb" to "test/**/test_*.rb"

• https://github.com/rubygems/rubygems/releases/tag/bundler-v2.3.0
• https://github.com/rubygems/rubygems/pull/3893

Retest doesn't take into account this other format "test/**/test_*.rb" and is likely to fail identifying the test file.

This issue is to double-check the behaviour and fix this issue if it happens.