assertEquals(0, pss.getPosition());
// Position backwards one by one.
for (int i=(int)length; i >= 0; i--) {
InputStream inComp = new LoopingAlphabetStream(length);
pss.reposition(i);
inComp.skip(i);
assertEquals(inComp.read(), pss.read());
}
// Position backwards two by two.
for (int i=(int)length -1; i >= 0; i -= 2) {
InputStream inComp = new LoopingAlphabetStream(length);