final byte[] b1 = new byte[] {0,1,2,3,4,(byte)153,64,64,64,9,9,9,9,9,9,9,9,9,9};
final byte[] b2 = new byte[] {1,(byte)153,0,0,0,0,(byte)153,64,64,64,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
final int off = 6;
ChunkEncoder encoder = ChunkEncoderFactory.safeInstance();
ChunkDecoder decoder = new VanillaChunkDecoder();
_testCollision(encoder, decoder, b1, 0, b1.length);
_testCollision(encoder, decoder, b2, off, b2.length - off);
encoder = ChunkEncoderFactory.optimalInstance();
decoder = new UnsafeChunkDecoder();