public void CacheTruncatedOnTruncateCall()
{
var sourceStream = new MemoryStream();
var sourceData = new byte[] { 1, 2, 3, 4, 5, 6 };
sourceStream.Write(sourceData, 0, sourceData.Length);
sourceStream.Position = 0;
var memoryStreamCacheAccessor = new MemoryStreamCacheAccessor();
var rewindable = new RewindableBuilder(sourceStream).SetCacheAccessor(memoryStreamCacheAccessor).Build();
var outputData = new byte[sourceData.Length];
rewindable.Stream.Read(outputData, 0, outputData.Length);
rewindable.Truncate(1);
Assert.IsTrue(memoryStreamCacheAccessor.Stream.ToArray().SequenceEqual(new byte[] { 6 }));
}
public void CacheTruncatedToAutoTruncationTailLengthToAccommodateNewDataWhenAutoTruncateAtBytesPassed()
{
var sourceStream = new MemoryStream();
var sourceData = new byte[] { 1, 2, 3, 4, 5, 6 };
sourceStream.Write(sourceData, 0, sourceData.Length);
sourceStream.Position = 0;
var memoryStreamCacheAccessor = new MemoryStreamCacheAccessor();
var rewindable = new RewindableBuilder(sourceStream).SetCacheAccessor(memoryStreamCacheAccessor)
.SetAutoTruncateAtBytes(4).SetAutoTruncationTailLength(0).Build();
var outputData = new byte[sourceData.Length];
rewindable.Stream.Read(outputData, 0, outputData.Length);
Assert.IsTrue(memoryStreamCacheAccessor.Stream.ToArray().SequenceEqual(new byte[] { 5, 6 }));
}