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

        public virtual void TestReleaseSnapshot()
        {
            Directory dir = NewDirectory();
            IndexWriter writer = new IndexWriter(dir, GetConfig(Random(), DeletionPolicy));
            SnapshotDeletionPolicy sdp = (SnapshotDeletionPolicy)writer.Config.DelPolicy;
            PrepareIndexAndSnapshots(sdp, writer, 1);

            // Create another commit - we must do that, because otherwise the "snapshot"
            // files will still remain in the index, since it's the last commit.
            writer.AddDocument(new Document());
            writer.Commit();

            // Release
            string segFileName = Snapshots[0].SegmentsFileName;
            sdp.Release(Snapshots[0]);
            writer.DeleteUnusedFiles();
            writer.Dispose();
            Assert.IsFalse(SlowFileExists(dir, segFileName), "segments file should not be found in dirctory: " + segFileName);
            dir.Dispose();
        }