use should_not_allow_values_for for user validations test
use should_not_allow_values_for for user validations test

square/rubygems.org,square/rubygems.org,1337807/rubygems.org,alloy/gemcutter,rubygems/rubygems.org-backup,square/rubygems.org,dstrctrng/private_event,1337807/rubygems.org,rubygems/rubygems.org-backup,rubygems/rubygems.org-backup,bpm/getbpm.org,1337807/rubygems.org,bpm/getbpm.org,dstrctrng/private_event,alloy/gemcutter