Lucene.Net.Search.TestNumericRangeQuery64.TestRange C# (CSharp) Method

        private void TestRange(int precisionStep)
        {
            string field = "field" + precisionStep;
            int count = 3000;
            long lower = (Distance * 3 / 2) + StartOffset, upper = lower + count * Distance + (Distance / 3);
            NumericRangeQuery<long> q = NumericRangeQuery.NewLongRange(field, precisionStep, lower, upper, true, true);
            NumericRangeFilter<long> f = NumericRangeFilter.NewLongRange(field, precisionStep, lower, upper, true, true);
            for (sbyte i = 0; i < 3; i++)
            {
                TopDocs topDocs;
                string type;
                switch (i)
                {
                    case 0:
                        type = " (constant score filter rewrite)";
                        q.SetRewriteMethod(MultiTermQuery.CONSTANT_SCORE_FILTER_REWRITE);
                        topDocs = Searcher.Search(q, null, NoDocs, Sort.INDEXORDER);
                        break;

                    case 1:
                        type = " (constant score boolean rewrite)";
                        q.SetRewriteMethod(MultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE);
                        topDocs = Searcher.Search(q, null, NoDocs, Sort.INDEXORDER);
                        break;

                    case 2:
                        type = " (filter)";
                        topDocs = Searcher.Search(new MatchAllDocsQuery(), f, NoDocs, Sort.INDEXORDER);
                        break;

                    default:
                        return;
                }
                ScoreDoc[] sd = topDocs.ScoreDocs;
                Assert.IsNotNull(sd);
                Assert.AreEqual(count, sd.Length, "Score doc count" + type);
                Document doc = Searcher.Doc(sd[0].Doc);
                Assert.AreEqual(2 * Distance + StartOffset, (long)doc.GetField(field).NumericValue, "First doc" + type);
                doc = Searcher.Doc(sd[sd.Length - 1].Doc);
                Assert.AreEqual((1 + count) * Distance + StartOffset, (long)doc.GetField(field).NumericValue, "Last doc" + type);
            }
        }