Con not build and run test on Eclipse IDE

Con not build and run test on Eclipse IDE.
I am using hailtondecastro/hibernate-orm branch "wip/se_6.0_HHH-13656" forked from sebersole/hibernate-core/ branch "wip/6.0".

So far, I have been able to compile and run the tests but several have failed. For example:
...
Caused by: org.hibernate.HibernateException: Dialect class not found: @db.dialect@
at org.hibernate.dialect.Dialect.instantiateDialect(Dialect.java:316)
at org.hibernate.dialect.Dialect.getDialect(Dialect.java:283)
at org.hibernate.testing.junit4.BaseCoreFunctionalTestCase.<clinit>(BaseCoreFunctionalTestCase.java:66)
... 35 more
...

Any help?!