[ruby/csv] test: rename Helper to CSVHelper (https://github.com/ruby/csv/pull/278)
Rename it so that in ruby/ruby, the generic name Helper is not used.
[ruby/csv] test: rename Helper to CSVHelper
(https://github.com/ruby/csv/pull/278)
Rename it so that in ruby/ruby, the generic name Helper is not used.