Fix running Rack::EnforceValidEncoding tests by themselves
Fix running Rack::EnforceValidEncoding tests by themselves

tobiashm/rack-contrib,vivrass/rack-contrib,gferguson-gd/rack-contrib,edmorley/rack-contrib,edmorley/rack-contrib,gferguson-gd/rack-contrib,tobiashm/rack-contrib,vivrass/rack-contrib