Lucene.Net.Search.TestSort.TestFloatMissingLast C# (CSharp) Метод

        public virtual void TestFloatMissingLast()
        {
            Directory dir = NewDirectory();
            RandomIndexWriter writer = new RandomIndexWriter(Random(), dir, Similarity, TimeZone);
            Document doc = new Document();
            writer.AddDocument(doc);
            doc = new Document();
            doc.Add(NewStringField("value", "-1.3", Field.Store.YES));
            writer.AddDocument(doc);
            doc = new Document();
            doc.Add(NewStringField("value", "4.2", Field.Store.YES));
            writer.AddDocument(doc);
            IndexReader ir = writer.Reader;
            writer.Dispose();

            IndexSearcher searcher = NewSearcher(ir);
            SortField sortField = new SortField("value", SortField.Type_e.FLOAT);
            sortField.MissingValue = float.MaxValue;
            Sort sort = new Sort(sortField);

            TopDocs td = searcher.Search(new MatchAllDocsQuery(), 10, sort);
            Assert.AreEqual(3, td.TotalHits);
            // null is treated as Float.MAX_VALUE
            Assert.AreEqual("-1.3", searcher.Doc(td.ScoreDocs[0].Doc).Get("value"));
            Assert.AreEqual("4.2", searcher.Doc(td.ScoreDocs[1].Doc).Get("value"));
            Assert.IsNull(searcher.Doc(td.ScoreDocs[2].Doc).Get("value"));

            ir.Dispose();
            dir.Dispose();
        }