public void Can_ToUtf8_and_FromUtf8_using_Memory()
{
foreach (var test in Utf8Case.Source)
{
ReadOnlyMemory <byte> bytes = test.expectedString.AsMemory().ToUtf8();
Assert.That(bytes.Length, Is.EqualTo(test.count));
Assert.That(bytes.ToArray(), Is.EquivalentTo(test.expectedBytes));
ReadOnlyMemory <char> chars = bytes.FromUtf8();
Assert.That(chars.Length, Is.EqualTo(test.expectedString.Length));
Assert.That(chars.ToString(), Is.EqualTo(test.expectedString));
}
}
public static bool IsStreamDeletedEvent(
string streamOrMetaStreamId, string eventType, ReadOnlyMemory <byte> eventData, out string deletedPartitionStreamId)
{
bool isMetaStream;
if (SystemStreams.IsMetastream(streamOrMetaStreamId))
{
isMetaStream = true;
deletedPartitionStreamId = streamOrMetaStreamId.Substring("$$".Length);
}
else
{
isMetaStream = false;
deletedPartitionStreamId = streamOrMetaStreamId;
}
var isStreamDeletedEvent = false;
if (isMetaStream)
{
if (eventType == SystemEventTypes.StreamMetadata)
{
var metadata = StreamMetadata.FromJson(eventData.FromUtf8());
//NOTE: we do not ignore JSON deserialization exceptions here assuming that metadata stream events must be deserializable
if (metadata.TruncateBefore == EventNumber.DeletedStream)
{
isStreamDeletedEvent = true;
}
}
}
else
{
if (eventType == SystemEventTypes.StreamDeleted)
{
isStreamDeletedEvent = true;
}
}
return(isStreamDeletedEvent);
}
