Write tests for WrapperQueries on Elasticsearch 6 and 7

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.2.X, Master
• Component/s: Search Infrastructure > Elasticsearch Connector
• Labels:
  • ee-bp
  • liferay-dxp-72-sp1
  • liferay-fixpack-dxp-2-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Epic Link: Learning to Rank
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/79109

Wrapper queries (LPS-102391) are a hard dependency to Learning to Rank.  To effectively use them on LTR, we need rescorers to work on Elasticsearch 7 first (LPS-102619). So, while we work on rescorers, let's ensure wrapper queries work by using unit tests.