Ingo Bürk created FLINK-24004:
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             Summary: Introduce a source/sink testing harness
                 Key: FLINK-24004
                 URL: https://issues.apache.org/jira/browse/FLINK-24004
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / API, Table SQL / Planner
            Reporter: Ingo Bürk
            Assignee: Ingo Bürk


For many tests we require some source/sink + factory with specific features 
and/or abilities. Currently, the "values" source exists for this, but has 
become quite bloated. Specifically implementing a specific set of abilities is 
very difficult to reflect there. On the other hand, implementing new factories 
for individual tests is a lot of bloat and requires a lot of factories to be 
registered.

We want to introduce a new factory (alongside the existing "values" one) which 
simply loads a user-defined class as the source to remove a bunch of that 
boilerplate.

Additional tasks:
 * Use this harness in PushProjectIntoTableSourceScanRuleTest
 * Migrate the "values" factory to the new config options class pattern so 
options can be used programmatically.



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