public void SkippingDoesNotPreventReading(int bufferSize)
{
var memStream = new SKMemoryStream(gAbcs);
var bufferedStream = new SKFrontBufferedManagedStream(memStream, bufferSize);
test_hasLength(bufferedStream, memStream);
// Skip half the buffer.
bufferedStream.Skip(bufferSize / 2);
// Rewind, then read part of the buffer, which should have been read.
test_rewind(bufferedStream, true);
test_read(bufferedStream, gAbcs, bufferSize / 4);
// Now skip beyond the buffered piece, but still within the total buffer.
bufferedStream.Skip(bufferSize / 2);
// Test that reading will still work.
test_read(bufferedStream, gAbcs.Skip(memStream.Position).ToArray(), bufferSize / 4);
test_rewind(bufferedStream, true);
test_read(bufferedStream, gAbcs, bufferSize);
}
public void StreamPeek3()
{
var gAbcsString = "abcdefghijklmnopqrstuvwxyz";
var gAbcs = StringUtilities.GetEncodedText(gAbcsString, SKTextEncoding.Utf8);
for (var bufferSize = 1; bufferSize < gAbcs.Length; bufferSize++)
{
var memStream = new SKMemoryStream(gAbcs);
var bufferedStream = new SKFrontBufferedManagedStream(memStream, bufferSize);
var bytesToPeek = bufferSize + 1;
var peekStorage = SKData.Create(bytesToPeek);
var readStorage = SKData.Create(bytesToPeek);
for (var start = 0; start <= bufferSize; start++)
{
// Skip to the starting point
Assert.Equal(start, bufferedStream.Skip(start));
var bytesPeeked = bufferedStream.Peek(peekStorage.Data, bytesToPeek);
if (0 == bytesPeeked)
{
// Peeking should only fail completely if we have read/skipped beyond the buffer.
Assert.True(start >= bufferSize);
break;
}
// Only read the amount that was successfully peeked.
var bytesRead = bufferedStream.Read(readStorage.Data, bytesPeeked);
Assert.Equal(bytesPeeked, bytesRead);
Assert.Equal(peekStorage.ToArray().Take(bytesPeeked), readStorage.ToArray().Take(bytesPeeked));
// This should be safe to rewind.
Assert.True(bufferedStream.Rewind());
}
}
}