When WS-MDS Aggregator Junit tests are executed with the "test" target, though 
the build is successful no test-reports would have been generated.

It seems "test" target in the build.xml is redundant, 
as "AggregatorTestCase.java" (This is the only java class present in the 
aggregator junit source) is an abstract class and there is no code for 
instantiating the junit execution anywhere! Is it just a support class for 
other WS-MDS services (Index and trigger) junits? In that case the Aggregator 
junit build.xml should not have a "test" target to be consistent with the usage 
of the "test" target everywhere.