Lucene.Net.Analysis.ChainedFilterTest.TestANDNOT C# (CSharp) Method

        public void TestANDNOT()
        {
            ChainedFilter chain = GetChainedFilter(
              new Filter[] { dateFilter, sueFilter },
                new ChainedFilter.Logic[] { ChainedFilter.Logic.AND, ChainedFilter.Logic.ANDNOT });

            TopDocs hits = searcher.Search(query, chain, 1000);
            Assert.AreEqual(MAX / 2, hits.TotalHits, "ANDNOT matches just bob");
            Assert.AreEqual("bob", searcher.Doc(hits.ScoreDocs[0].doc).Get("owner"));

            chain = GetChainedFilter(
                new Filter[] { bobFilter, bobFilter },
                  new ChainedFilter.Logic[] { ChainedFilter.Logic.ANDNOT, ChainedFilter.Logic.ANDNOT });

            hits = searcher.Search(query, chain, 1000);
            Assert.AreEqual(MAX / 2, hits.TotalHits, "ANDNOT bob ANDNOT bob matches all sues");
            Assert.AreEqual("sue", searcher.Doc(hits.ScoreDocs[0].doc).Get("owner"));
        }