Issue #3587872 by macsim: Add unit tests for IndexNowPathProcessor and...

Maxime Rouxrequested to merge
issue/index_now-3587872:3587872-add-unit-tests into 4.0.x

Issue #3587872 by macsim: Add unit tests for IndexNowPathProcessor and IndexNowOutboundPathProcessor

Closes #3587872

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