Ldap server for developer

Apache provide a directory server called "ApacheDS"(Apache Directory Server), and it provides a GUI management client called "Apache Directory Studio" which is based on Eclipse.

If you want to have a test only, this studio provides a built-in server for your test, easy to link.

You can also install the studio directly in Eclipse using this update site: http://directory.apache.org/studio/update/2.x/

If you're on Windows and use Active Directory, have a look at Active Directory Lightweight Directory Services (AD LDS) - a LDAP server you can install and use on your dev machine.

The open source LDAP server from OpenLDAP should give you what you need:

http://www.openldap.org/