Problem
If you start a Server Job Unit Test execution and the job status never changes to the Queued/Running state, or the 'Starting Job...' message does not appear in the job log, then it is likely that the preparation phase of Unit Testing failed and the job execution never started.
Solution
Errors can be diagnosed by looking at the Unit Testing log which is written to <Project Root Directory>/&PH&/DSU.STUB.log on the DataStage engine where <Project Root Directory> is usually $DSHOME/../Projects/<Project Name>/.