private static void TransformAllTest(
int inBlockSize,
int outBlockSize,
int inputCacheBlocks,
int dataSize,
int bufSize,
bool canTransformMultipleBlocks,
int transformBufferSize)
{
var src = new BigBufferedSourceMock (dataSize, bufSize, FillFunction);
var mock = new CryptoTransformMock (inBlockSize, outBlockSize, inputCacheBlocks, canTransformMultipleBlocks);
var transform = new CryptoTransformingBufferedSource (src, mock, new byte[transformBufferSize]);
var fullBlocks = dataSize / inBlockSize;
var inReminder = dataSize - fullBlocks * inBlockSize;
var outReminder = Math.Min (inReminder, outBlockSize);
var resultSize = fullBlocks * outBlockSize + outReminder;
// считываем весь результат преобразования
int len = 0;
var result = new byte[resultSize];
int available;
while ((available = transform.FillBuffer ()) > 0)
{
Array.Copy (transform.Buffer, transform.Offset, result, len, available);
len += available;
transform.SkipBuffer (available);
}
Assert.IsTrue (transform.IsExhausted);
Assert.AreEqual (resultSize, len);
// проверяем что результат преобразования совпадает с тестовым массивом
for (var i = 0; i < fullBlocks; i++)
{
for (int j = 0; j < outBlockSize; j++)
{
var inIndex = i * inBlockSize + (j % inBlockSize);
var outIndex = i * outBlockSize + j;
Assert.AreEqual (FillFunction (inIndex), (byte)~result[outIndex]);
}
}
for (int j = 0; j < outReminder; j++)
{
var inIndex = fullBlocks * inBlockSize + (j % inBlockSize);
var outIndex = fullBlocks * outBlockSize + j;
Assert.AreEqual (FillFunction (inIndex), (byte)~result[outIndex]);
}
}
private static void SkipTransformChunkTest(
int inBlockSize,
int outBlockSize,
int inputCacheBlocks,
long dataSize,
int bufSize,
bool canTransformMultipleBlocks,
int transformBufferSize,
long totalSkip,
int bufferSkip)
{
var src = new BigBufferedSourceMock (dataSize, bufSize, FillFunction);
var mock = new CryptoTransformMock (inBlockSize, outBlockSize, inputCacheBlocks, canTransformMultipleBlocks);
var transform = new CryptoTransformingBufferedSource (src, mock, new byte[transformBufferSize]);
Assert.AreEqual (totalSkip, transform.TrySkip (totalSkip));
transform.EnsureBuffer (3);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip, mock)), transform.Buffer[transform.Offset]);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip + 1, mock)), transform.Buffer[transform.Offset + 1]);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip + 2, mock)), transform.Buffer[transform.Offset + 2]);
transform.EnsureBuffer (bufferSkip);
transform.SkipBuffer (bufferSkip);
transform.EnsureBuffer (3);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip + bufferSkip, mock)), transform.Buffer[transform.Offset]);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip + bufferSkip + 1, mock)), transform.Buffer[transform.Offset + 1]);
Assert.AreEqual ((byte)~FillFunction (MapTransformIndexBackToOriginal (totalSkip + bufferSkip + 2, mock)), transform.Buffer[transform.Offset + 2]);
}