c# - Fluent NHibernate - Failure: NHibernate.MappingException : No persister for Tag -

i read 20 question prolem find no solution specific case here...

i use last version of nhibernate , fluent nhibernate installed via nuget

all class pubblic, have no error on build

this base class tests:

namespace gedi.integrationtest { public class basedbtest : idisposable {     private static nhibernate.cfg.configuration configuration;     private static isessionfactory sessionfactory;     protected isession session;     public basedbtest()     {         if (configuration == null)         {              configuration = new nhibernate.cfg.configuration();             configuration.configure(); // read config default style                      fluently.configure(configuration)                 .mappings(m => m.automappings.add(automap.assemblyof<tag>(new automapconfiguration())));              sessionfactory = configuration.buildsessionfactory();         }         session = sessionfactory.opensession();         new schemaexport(configuration).execute(true, true, false, session.connection, console.out);                 }     public void dispose()     {         session.dispose();     }        } 

}

this automapconfig:

namespace gedi.application.dataaccess.maps { public class automapconfiguration : defaultautomappingconfiguration {     public override bool shouldmap(type type)     {         return type.namespace.endswith("entity");         //return type.name.equals("tag");        } } 

and map

namespace gedi.application.dataaccess.maps { public class tagmap: classmap<tag> {     public tagmap()     {// omitted brevity} } } 

this definizion of tag object:

namespace gedi.domain.object.entity {     public class tag: ikeyedentity<int>     {// omitted brevity} } 

debuging test find shouldmap never executed why?