public void return_correct_range_on_from_end_range_query_for_second_stream_with_specific_version()
{
var result = ReadIndex.ReadStreamEventsBackward("CD", 4, 5);
Assert.AreEqual(ReadStreamResult.Success, result.Result);
Assert.AreEqual(5, result.Records.Length);
var records = result.Records.Reverse().ToArray();
for (int i = 0; i < _prepares2.Length; i++)
{
Assert.AreEqual(_prepares2[i], records[i]);
}
}
public void return_correct_range_on_from_end_range_query_for_first_stream_with_from_end_version()
{
var result = ReadIndex.ReadStreamEventsBackward("AB", -1, 3);
Assert.AreEqual(ReadStreamResult.Success, result.Result);
Assert.AreEqual(3, result.Records.Length);
var records = result.Records.Reverse().ToArray();
for (int i = 0; i < _prepares1.Length; i++)
{
Assert.AreEqual(_prepares1[i], records[i]);
}
}
public void return_correct_range_on_from_end_range_query_for_third_stream_from_specific_version()
{
var result = ReadIndex.ReadStreamEventsBackward("EF", 6, 7);
Assert.AreEqual(RangeReadResult.Success, result.Result);
Assert.AreEqual(7, result.Records.Length);
var records = result.Records.Reverse().ToArray();
for (int i = 0; i < _prepares3.Length; i++)
{
Assert.AreEqual(_prepares3[i], records[i]);
}
}
public void on_read_backward_from_end_to_active_next_event_number_is_last_read_event_minus_1_and_its_not_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 4, 2);
Assert.AreEqual(ReadStreamResult.Success, res.Result);
Assert.AreEqual(2, res.NextEventNumber);
Assert.AreEqual(4, res.LastEventNumber);
Assert.IsFalse(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(2, records.Length);
Assert.AreEqual(_event5, records[0]);
Assert.AreEqual(_event4, records[1]);
}
public void on_read_backward_from_active_to_expired_its_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 3, 3);
Assert.AreEqual(ReadStreamResult.Success, res.Result);
Assert.AreEqual(-1, res.NextEventNumber);
Assert.AreEqual(4, res.LastEventNumber);
Assert.IsTrue(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(2, records.Length);
Assert.AreEqual(_event4, records[0]);
Assert.AreEqual(_event3, records[1]);
}
public void on_read_backward_from_out_of_bounds_to_middle_next_event_number_is_middle_minus_1_and_its_not_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 7, 5);
Assert.AreEqual(RangeReadResult.Success, res.Result);
Assert.AreEqual(2, res.NextEventNumber);
Assert.AreEqual(5, res.LastEventNumber);
Assert.IsFalse(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(3, records.Length);
Assert.AreEqual(_event5, records[0]);
Assert.AreEqual(_event4, records[1]);
Assert.AreEqual(_event3, records[2]);
}
public void on_read_backward_from_end_to_maxcount_bound_its_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 5, 3);
Assert.AreEqual(RangeReadResult.Success, res.Result);
Assert.AreEqual(-1, res.NextEventNumber);
Assert.AreEqual(5, res.LastEventNumber);
Assert.IsTrue(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(3, records.Length);
Assert.AreEqual(_event5, records[0]);
Assert.AreEqual(_event4, records[1]);
Assert.AreEqual(_event3, records[2]);
}
on_read_backward_from_the_end_to_middle_next_event_number_is_middle_minus_1_and_its_not_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 4, 3);
Assert.AreEqual(ReadStreamResult.Success, res.Result);
Assert.AreEqual(1, res.NextEventNumber);
Assert.AreEqual(4, res.LastEventNumber);
Assert.IsFalse(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(3, records.Length);
Assert.AreEqual(_event4, records[0]);
Assert.AreEqual(_event3, records[1]);
Assert.AreEqual(_event2, records[2]);
}
public void on_read_backward_from_end_to_maxage_bound_next_event_number_is_maxage_bound_minus_1_and_its_not_end_of_stream() // just no simple way to tell this
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 4, 3);
Assert.AreEqual(ReadStreamResult.Success, res.Result);
Assert.AreEqual(1, res.NextEventNumber);
Assert.AreEqual(4, res.LastEventNumber);
Assert.IsFalse(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(3, records.Length);
Assert.AreEqual(_event4, records[0]);
Assert.AreEqual(_event3, records[1]);
Assert.AreEqual(_event2, records[2]);
}
public void on_read_backward_from_middle_to_before_start_next_event_number_is_minus_1_and_its_end_of_stream()
{
var res = ReadIndex.ReadStreamEventsBackward("ES", 2, 5);
Assert.AreEqual(ReadStreamResult.Success, res.Result);
Assert.AreEqual(-1, res.NextEventNumber);
Assert.AreEqual(4, res.LastEventNumber);
Assert.IsTrue(res.IsEndOfStream);
var records = res.Records;
Assert.AreEqual(3, records.Length);
Assert.AreEqual(_event2, records[0]);
Assert.AreEqual(_event1, records[1]);
Assert.AreEqual(_event0, records[2]);
}
public void reading_forward_should_match_reading_backwards_in_reverse()
{
var backwardsCollected = new List <EventRecord>();
var forwardsCollected = new List <EventRecord>();
var from = long.MaxValue;
while (true)
{
var backwards = ReadIndex.ReadStreamEventsBackward("ES", from, 7);
for (int i = 0; i < backwards.Records.Length; i++)
{
backwardsCollected.Add(backwards.Records[i]);
}
from = backwards.NextEventNumber;
if (backwards.IsEndOfStream)
{
break;
}
}
from = 0;
while (true)
{
var forwards = ReadIndex.ReadStreamEventsForward("ES", from, 7);
for (int i = 0; i < forwards.Records.Length; i++)
{
forwardsCollected.Add(forwards.Records[i]);
}
from = forwards.NextEventNumber;
if (forwards.IsEndOfStream)
{
break;
}
}
Assert.AreEqual(forwardsCollected.Count, backwardsCollected.Count);
backwardsCollected.Reverse();
for (int i = 0; i < backwardsCollected.Count; i++)
{
Assert.AreEqual(backwardsCollected[i].EventId, forwardsCollected[i].EventId);
Assert.AreEqual(backwardsCollected[i].EventType, forwardsCollected[i].EventType);
Assert.AreEqual(backwardsCollected[i].ExpectedVersion, forwardsCollected[i].ExpectedVersion);
Assert.AreEqual(backwardsCollected[i].EventNumber, forwardsCollected[i].EventNumber);
}
}
public void the_metastream_is_absent_logically()
{
Assert.AreEqual(ReadEventResult.NotFound, ReadIndex.ReadEvent("$$test", 0).Result);
Assert.AreEqual(ReadStreamResult.Success, ReadIndex.ReadStreamEventsForward("$$test", 0, 100).Result);
Assert.AreEqual(ReadStreamResult.Success, ReadIndex.ReadStreamEventsBackward("$$test", -1, 100).Result);
}
public void the_stream_returns_nothing_for_nonexistent_page()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.Success, ReadIndex.ReadStreamEventsBackward("test1", 100, 10, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_range_for_5_1_range_on_from_end_range_query_request_for_second_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.Success, ReadIndex.ReadStreamEventsBackward("CD", 5, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_5_1_range_on_from_end_range_query_for_non_existing_stream_with_same_hash_as_second_one()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("FY", 5, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void not_return_range_for_non_existing_stream_with_same_hash()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("EF", 0, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_range_for_7_1_range_on_from_end_range_query_request_for_third_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.StreamDeleted, ReadIndex.ReadStreamEventsBackward("EF", 7, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void not_return_range_on_from_end_query_with_from_end_version_for_non_existing_stream_with_same_hash_as_stream_with_two_events()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("NONE", -1, 2, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_range_on_try_get_records_from_end_for_nonexisting_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("ES-NONEXISTING", 0, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_range_on_try_get_records_from_end_for_nonexisting_event_stream_with_same_hash_as_existing_one()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("HG", 0, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void return_empty_range_on_from_end_range_query_for_invalid_arguments_for_first_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.Success, ReadIndex.ReadStreamEventsBackward("AB", 1, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void return_correct_range_on_from_end_range_query_for_first_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.Success, ReadIndex.ReadStreamEventsBackward("AB", 0, 1, out records));
Assert.AreEqual(_prepare1, records[0]);
}
public void the_kept_stream_is_present()
{
Assert.AreEqual(ReadEventResult.Success, ReadIndex.ReadEvent(_keptStream, 0).Result);
Assert.AreEqual(ReadStreamResult.Success, ReadIndex.ReadStreamEventsForward(_keptStream, 0, 100).Result);
Assert.AreEqual(ReadStreamResult.Success, ReadIndex.ReadStreamEventsBackward(_keptStream, -1, 100).Result);
}
public void the_stream_is_absent_logically()
{
Assert.AreEqual(ReadEventResult.NoStream, ReadIndex.ReadEvent("test", 0).Result);
Assert.AreEqual(ReadStreamResult.NoStream, ReadIndex.ReadStreamEventsForward("test", 0, 100).Result);
Assert.AreEqual(ReadStreamResult.NoStream, ReadIndex.ReadStreamEventsBackward("test", -1, 100).Result);
}
public void return_empty_range_on_from_end_range_query_for_second_stream()
{
var result = ReadIndex.ReadStreamEventsBackward("CD", 0, 1);
Assert.AreEqual(RangeReadResult.StreamDeleted, result.Result);
}
public void the_stream_cant_be_read_for_second_stream()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.NoStream, ReadIndex.ReadStreamEventsBackward("test2", 0, 1, out records));
Assert.AreEqual(0, records.Length);
}
public void read_stream_events_backward_reports_deleted_metastream()
{
Assert.AreEqual(ReadStreamResult.StreamDeleted, ReadIndex.ReadStreamEventsBackward("$$test", 0, 100).Result);
}
public void should_be_able_to_read_stream_events_backward()
{
var result = ReadIndex.ReadStreamEventsBackward(_stream, -1, 10);
Assert.AreEqual(2, result.Records.Length);
}
public void the_stream_is_absent_logically()
{
Assert.AreEqual(ReadStreamResult.NoStream, ReadIndex.ReadStreamEventsForward("test", 0, 100).Result, "Read test stream forward");
Assert.AreEqual(ReadStreamResult.NoStream, ReadIndex.ReadStreamEventsBackward("test", -1, 100).Result, "Read test stream backward");
Assert.AreEqual(ReadEventResult.NoStream, ReadIndex.ReadEvent("test", 0).Result, "Read single event from test stream");
}
public void return_empty_7_1_range_on_from_end_range_query_for_non_existing_stream_with_same_hash_as_third_one()
{
EventRecord[] records;
Assert.AreEqual(RangeReadResult.StreamDeleted, ReadIndex.ReadStreamEventsBackward("EF", 7, 1, out records));
Assert.AreEqual(0, records.Length);
}