public void all_records_can_be_read_sequentially_page_by_page_in_forward_pass()
{
var recs = new[] {_p2, _p4, _p1, _p3, _p5}; // in committed order
int count = 0;
var pos = new TFPos(0, 0);
IndexReadAllResult result;
while ((result = ReadIndex.ReadAllEventsForward(pos, 1)).Records.Count != 0)
{
Assert.AreEqual(1, result.Records.Count);
Assert.AreEqual(recs[count], result.Records[0].Event);
pos = result.NextPos;
count += 1;
}
Assert.AreEqual(recs.Length, count);
}
public void all_records_can_be_read_sequentially_page_by_page_in_backward_pass()
{
var recs = new[] { _p5, _p3, _p1, _p4, _p2 }; // in reverse committed order
int count = 0;
var pos = new TFPos(Db.Config.WriterCheckpoint.Read(), Db.Config.WriterCheckpoint.Read());
ReadAllResult result;
while ((result = ReadIndex.ReadAllEventsBackward(pos, 1, false)).Records.Count != 0)
{
Assert.AreEqual(1, result.Records.Count);
Assert.AreEqual(recs[count], result.Records[0].Event);
pos = result.NextPos;
count += 1;
}
Assert.AreEqual(recs.Length, count);
}
public void position_returned_for_prev_page_when_traversing_forward_allow_to_traverse_backward_correctly()
{
var recs = new[] { _p2, _p4, _p1, _p3, _p5 }; // in committed order
int count = 0;
var pos = new TFPos(0, 0);
IndexReadAllResult result;
while ((result = ReadIndex.ReadAllEventsForward(pos, 1)).Records.Count != 0)
{
Assert.AreEqual(1, result.Records.Count);
Assert.AreEqual(recs[count], result.Records[0].Event);
var localPos = result.PrevPos;
int localCount = 0;
IndexReadAllResult localResult;
while ((localResult = ReadIndex.ReadAllEventsBackward(localPos, 1)).Records.Count != 0)
{
Assert.AreEqual(1, localResult.Records.Count);
Assert.AreEqual(recs[count - 1 - localCount], localResult.Records[0].Event);
localPos = localResult.NextPos;
localCount += 1;
}
pos = result.NextPos;
count += 1;
}
Assert.AreEqual(recs.Length, count);
}
