test build constraint test build constraint model core factori build constraint fail illeg argument except thrown illeg argument except expect illeg argument except seen object elem model model manag factori creat model object model core factori build constraint elem model pump flush model event namespac unexpectli set model facad namespac constrain element set model facad constrain element constraint set model facad constraint elem model core helper set namespac elem model model manag factori creat model core factori build constraint elem model pump flush model event namespac set model facad namespac 