public void try_read_returns_false_when_writer_checksum_is_equal_to_reader_checksum()
{
var writerchk = new InMemoryCheckpoint();
var chaserchk = new InMemoryCheckpoint(Checkpoint.Chaser, 0);
var db = new TFChunkDb(new TFChunkDbConfig(PathName,
new PrefixFileNamingStrategy(PathName, "prefix.tf"),
10000,
0,
writerchk,
chaserchk,
new[] {writerchk, chaserchk}));
db.OpenVerifyAndClean();
writerchk.Write(12);
writerchk.Flush();
chaserchk.Write(12);
chaserchk.Flush();
var chaser = new TFChunkChaser(db, writerchk, chaserchk);
chaser.Open();
LogRecord record;
Assert.IsFalse(chaser.TryReadNext(out record));
Assert.AreEqual(12, chaserchk.Read());
chaser.Close();
db.Dispose();
}
public override void TestFixtureSetUp()
{
base.TestFixtureSetUp();
WriterCheckpoint = new InMemoryCheckpoint(0);
var chaserchk = new InMemoryCheckpoint(Checkpoint.Chaser, 0);
Db = new TFChunkDb(new TFChunkDbConfig(PathName,
new VersionedPatternFileNamingStrategy(PathName, "chunk-"),
10000,
0,
WriterCheckpoint,
new[] {chaserchk}));
Db.OpenVerifyAndClean();
// create db
Writer = new TFChunkWriter(Db);
Writer.Open();
WriteTestScenario();
Writer.Close();
Writer = null;
WriterCheckpoint.Flush();
chaserchk.Write(WriterCheckpoint.Read());
chaserchk.Flush();
TableIndex = new TableIndex(Path.Combine(PathName, "index"), () => new HashListMemTable(), _maxEntriesInMemTable);
TableIndex.Initialize();
var reader = new TFChunkReader(Db, Db.Config.WriterCheckpoint);
ReadIndex = new ReadIndex(new NoopPublisher(), 2, () => new TFChunkSequentialReader(Db, Db.Config.WriterCheckpoint, 0), () => reader, TableIndex, new ByLengthHasher());
ReadIndex.Build();
}
