/usr/lib/ruby/vendor_ruby/i18n/tests/ is in ruby-i18n 0.7.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/i18n/tests/basics.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/defaults.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/interpolation.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/link.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/localization/
/usr/lib/ruby/vendor_ruby/i18n/tests/localization.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/localization/date.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/localization/date_time.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/localization/procs.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/localization/time.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/lookup.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/pluralization.rb
/usr/lib/ruby/vendor_ruby/i18n/tests/procs.rb