assertEquals(2*(N+2), policy.numOnInit);
assertEquals(2*(N+2)-1, policy.numOnCommit);
IndexSearcher searcher = new IndexSearcher(dir, false);
ScoreDoc[] hits = searcher.search(query, null, 1000).scoreDocs;
assertEquals(176, hits.length);
// Simplistic check: just verify only the past N segments_N's still
// exist, and, I can open a reader on each:
long gen = SegmentInfos.getCurrentSegmentGeneration(dir);