public void Can_delete_record()
{
AppendRecord(1, false);
AppendRecord(2, false);
var queueStream = new SingleFileQueueStream(_stream);
var handle = queueStream.ReadNextRecord().Handle;
queueStream.DeleteRecord(handle);
AssertRecord(1, 0, true);
}
public void Deleting_last_record_truncates_file()
{
AppendRecord(1, false);
AppendRecord(2, true);
AppendRecord(3, false);
var queueStream = new SingleFileQueueStream(_stream);
var handle1 = queueStream.ReadNextRecord().Handle;
var handle2 = queueStream.ReadNextRecord().Handle;
queueStream.DeleteRecord(handle1);
queueStream.DeleteRecord(handle2);
Assert.AreEqual(0, _stream.Length);
}
public void Can_append_record_to_truncated_file()
{
AppendRecord(1, false);
var queueStream = new SingleFileQueueStream(_stream);
var handle = queueStream.ReadNextRecord().Handle;
queueStream.DeleteRecord(handle);
using(var stream = new MemoryStream()) {
stream.Write(BitConverter.GetBytes(10));
stream.Seek(0, SeekOrigin.Begin);
queueStream.AppendRecord(stream, stream.Length);
AssertRecord(10, 0, false);
Assert.AreEqual(1, queueStream.UnreadCount);
}
}
