minitest-shared_description

https://github.com/jeremyevans/minitest-shared_description

minitest-shared_description adds support for shared specs and shared spec subclasses to Minitest. Minitest supports shared specs by default using plain ruby modules, but does not support shared spec subclasses. In addition to making it possible to share subclasses, minitest-shared_desciption also provides a slightly nicer interface for sharing specs.