Lucene.Net.Index.TestSnapshotDeletionPolicy.TestMissingCommits C# (CSharp) Method

        public virtual void TestMissingCommits()
        {
            // Tests the behavior of SDP when commits that are given at ctor are missing
            // on onInit().
            Directory dir = NewDirectory();
            IndexWriter writer = new IndexWriter(dir, GetConfig(Random(), DeletionPolicy));
            SnapshotDeletionPolicy sdp = (SnapshotDeletionPolicy)writer.Config.DelPolicy;
            writer.AddDocument(new Document());
            writer.Commit();
            IndexCommit s1 = sdp.Snapshot();

            // create another commit, not snapshotted.
            writer.AddDocument(new Document());
            writer.Dispose();

            // open a new writer w/ KeepOnlyLastCommit policy, so it will delete "s1"
            // commit.
            (new IndexWriter(dir, GetConfig(Random(), null))).Dispose();

            Assert.IsFalse(SlowFileExists(dir, s1.SegmentsFileName), "snapshotted commit should not exist");
            dir.Dispose();
        }
    }