[LUCENE-8391] Better tests for merge policies

• Type: Test
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.5, 8.0
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Adrien Grand
• Created: 09/Jul/18 10:34
• Updated: 28/Aug/22 15:32
• Resolved: 10/Jul/18 07:29

Description

Testing merge policies was hard in the past because it could only be done by setting up and IndexWriter, adding documents and making sure that merges behave as expected. The fact that MergePolicy doesn't need an IndexWriter anymore (LUCENE-8330) should make things easier since we should now be able to simulate merges without having to create an index.