Implement unit tests for pipeline element 'MergeByEnrichProcessor'

[bossenti]

This issue is about implementing unit tests for our pipeline element MergeByEnrichProcessor. An example of how to write unit tests for pipeline elements can be found here.

Mentoring

As this issue is marked as a good first issue and for the hacktoberfest event: one of @dominikriemer, @tenthe, @RobertIndie, or @bossenti are happy to provide help for getting started, just tag (one of) them if you want to start working on this issue and need some help.

[techrajdeep]

Hi @bossenti Please let me know if this issue is still open

[bossenti]

Yes, it is Would be great if you'd like to work on it

[rahulbiswas876]

@bossenti may I take up the task

[bossenti]

@techrajdeep are you still on this task?

[nitin-pandita]

@techrajdeep are you still on this task?

@bossenti hey If no one is working on this issue can take up this issue

[bossenti]

@nitin-pandita yes feel free to go ahead