public void TestMutationalChange()
{
MutationalChange c = new MutationalChange()
{
AppendByte = new FromToValue <byte>((byte)'A'),
RemoveLength = new FromToValue <ushort>(1),
AppendLength = new FromToValue <ushort>(1),
};
PatchChange ret = c.Process(0);
ret = c.Process(0);
ret = c.Process(0);
}
public override int Read(byte[] buffer, int offset, int count)
{
if (count <= 0 || _ReadedAll)
{
return(0);
}
int lee;
if (Config == null)
{
// No fuzzing
lee = ReadFromOriginal(_Source, buffer, ref offset, count);
}
else
{
// Read buffer first
lee = ReadBuffer(ref buffer, ref offset, ref count);
// Perform mutations (byte peer byte)
while (count > 0)
{
PatchChange log = null;
// If no buffer are available (FUZZ!)
if (_Buffer.Count == 0)
{
log = Config.Get(this);
}
// If change!
if (log != null)
{
// Add to log
_Log.Add(log);
// Add to buffer
if (log.Append != null)
{
_Buffer.AddRange(log.Append);
}
// Remove from source
if (log.Remove > 0)
{
int ix = 0;
byte[] r = new byte[log.Remove];
int ret = ReadFromOriginal(_Source, r, ref ix, log.Remove);
if (ret <= 0)
{
break;
}
}
}
int c = 1;
// Read buffer first (if available)
int d = ReadBuffer(ref buffer, ref offset, ref c);
if (d <= 0)
{
// Peek one byte if not from buffer
d = ReadFromOriginal(_Source, buffer, ref offset, 1);
if (d <= 0)
{
break;
}
}
lee += d;
count -= d;
}
}
return(lee);
}
