From Unofficial BOINC Wiki
A Project State indicating that the purpose of the Project is always for testing new Science Applications and Work Units so that if anything goes wrong, or there are any problems with them, the Live Project is unaffected.
A Test Project is not a Live Project, and is unlikely to ever become one. A Test Project is not the same as a Project Under Development, such as a Project with a Project State of Beta.
Pirates@Home, RALPH@Home, SETI@Home Beta, PrimeGrid, LHC@Home Alpha, and the BOINC Alpha projects are all examples of Test Projects.
 See Also