add tests for nextValidRid
add tests for nextValidRid

teambox/strophejs,diegocr/strophejs,sualko/strophejs,strophe/strophejs,damencho/strophejs,damencho/strophejs,adozenlines/strophejs,strophe/strophejs,adozenlines/strophejs,teambox/strophejs,strophe/strophejs,diegocr/strophejs,damencho/strophejs,sualko/strophejs,sualko/strophejs,m800-limited/strophejs,ggozad/strophejs,diegocr/strophejs,m800-limited/strophejs,teambox/strophejs,m800-limited/strophejs,ggozad/strophejs,ggozad/strophejs,adozenlines/strophejs