public void PlaybackStreamReadsRecordedDataIfTimeOffsetPassed()
{
var currentDateTime = DateTime.Now;
var currentDateTimeSourceMock = new Mock<ICurrentDateTimeSource>();
currentDateTimeSourceMock.Setup(currentDateTimeSource =>
currentDateTimeSource.GetCurrentDateTime()).Returns(() => currentDateTime);
var memoryStream = new MemoryStream();
var recordingStream = new RecordingStreamBuilder(memoryStream).SetCurrentDateTimeSource(currentDateTimeSourceMock.Object).Build();
currentDateTime = currentDateTime.Add(TimeSpan.FromSeconds(2));
var pastData = new byte[] { 1, 2, 3, 4 };
recordingStream.Write(pastData, 0, pastData.Length);
currentDateTime = currentDateTime.Add(TimeSpan.FromSeconds(3));
var presentData = new byte[] { 5, 6, 7 };
recordingStream.Write(presentData, 0, presentData.Length);
currentDateTime = currentDateTime.Add(TimeSpan.FromSeconds(4));
var futureData = new byte[] { 8, 9, 10, 11 };
recordingStream.Write(futureData, 0, futureData.Length);
memoryStream.Position = 0;
currentDateTime = currentDateTime.Add(TimeSpan.FromSeconds(8));
var playbackStream = new PlaybackStreamBuilder(memoryStream).SetCurrentDateTimeSource(currentDateTimeSourceMock.Object).Build();
currentDateTime = currentDateTime.Add(TimeSpan.FromSeconds(5));
var buffer = new byte[24];
int read = playbackStream.Read(buffer, 0, buffer.Length);
Assert.IsTrue(buffer.Take(read).SequenceEqual(pastData.Concat(presentData)));
}
public void RecordingStreamWritesTimeOffsetLengthAndDataToTargetStream()
{
var targetStream = new MemoryStream();
var currentDateTimeSourceMock = new Mock<ICurrentDateTimeSource>();
var initialDateTime = DateTime.Now;
var currentDateTime = initialDateTime;
currentDateTimeSourceMock.Setup(currentDateTimeSource => currentDateTimeSource.GetCurrentDateTime())
.Returns(() => currentDateTime);
var recordingStream = new RecordingStreamBuilder(targetStream).SetCurrentDateTimeSource(currentDateTimeSourceMock.Object).Build();
var timeOffset = TimeSpan.FromSeconds(3);
currentDateTime = initialDateTime.Add(timeOffset);
var data = new byte[] { 1, 2, 3, 4, 5 };
recordingStream.Write(data, 0, data.Length);
var timeOffset2 = TimeSpan.FromSeconds(7);
currentDateTime = initialDateTime.Add(timeOffset2);
var data2 = new byte[] { 6, 7, 8, 9, 10, 11 };
recordingStream.Write(data2, 0, data2.Length);
Assert.IsTrue(targetStream.ToArray().SequenceEqual(
BitConverter.GetBytes(timeOffset.Ticks).Concat(BitConverter.GetBytes(data.Length)).Concat(data)
.Concat(BitConverter.GetBytes(timeOffset2.Ticks).Concat(BitConverter.GetBytes(data2.Length)).Concat(data2))));
}