public virtual void TestPalyndrome2()
{
// search on non palyndrome, find phrase with no slop, using exact phrase scorer
query.Slop = 0; // to use exact phrase scorer
query.Add(new Term("field", "two"));
query.Add(new Term("field", "three"));
ScoreDoc[] hits = searcher.Search(query, null, 1000).ScoreDocs;
Assert.AreEqual(1, hits.Length, "phrase found with exact phrase scorer");
float score0 = hits[0].Score;
//System.out.println("(exact) field: two three: "+score0);
QueryUtils.Check(query, searcher);
// search on non palyndrome, find phrase with slop 2, though no slop required here.
query.Slop = 2; // to use sloppy scorer
hits = searcher.Search(query, null, 1000).ScoreDocs;
Assert.AreEqual(1, hits.Length, "just sloppy enough");
float score1 = hits[0].Score;
//System.out.println("(sloppy) field: two three: "+score1);
Assert.AreEqual(score0, score1, SCORE_COMP_THRESH, "exact scorer and sloppy scorer score the same when slop does not matter");
QueryUtils.Check(query, searcher);
// search ordered in palyndrome, find it twice
query = new PhraseQuery();
query.Slop = 2; // must be at least two for both ordered and reversed to match
query.Add(new Term("palindrome", "two"));
query.Add(new Term("palindrome", "three"));
hits = searcher.Search(query, null, 1000).ScoreDocs;
Assert.AreEqual(1, hits.Length, "just sloppy enough");
float score2 = hits[0].Score;
//System.out.println("palindrome: two three: "+score2);
QueryUtils.Check(query, searcher);
//commented out for sloppy-phrase efficiency (issue 736) - see SloppyPhraseScorer.phraseFreq().
//Assert.IsTrue(score1+SCORE_COMP_THRESH<score2, "ordered scores higher in palindrome");
// search reveresed in palyndrome, find it twice
query = new PhraseQuery();
query.Slop = 2; // must be at least two for both ordered and reversed to match
query.Add(new Term("palindrome", "three"));
query.Add(new Term("palindrome", "two"));
hits = searcher.Search(query, null, 1000).ScoreDocs;
Assert.AreEqual(1, hits.Length, "just sloppy enough");
float score3 = hits[0].Score;
//System.out.println("palindrome: three two: "+score3);
QueryUtils.Check(query, searcher);
//commented out for sloppy-phrase efficiency (issue 736) - see SloppyPhraseScorer.phraseFreq().
//Assert.IsTrue(score1+SCORE_COMP_THRESH<score3,"reversed scores higher in palindrome");
//Assert.AreEqual(score2, score3, SCORE_COMP_THRESH,"dered or reversed does not matter");
}
