Troubleshooting the Unit Tests
General Ideas
If you have your eclipse setup working, then going to Eclipse, locating the test (first test usually) that is failing, right click on the method name and Run As -> jUnit Test
This will show you in a clearer way if there was a message about why the failure occurred.
Specific Cases
lib-id-generator
These test's failing is most likely caused by your database not being setup correctly. Review the portions of Developer Bootstrap that have to do with setting up your mysql.
JDO Implementation
I get these failures on a relatively clean checkout. I'm not sure what the problem is yet.
NodeDAOImplTest -