* correct results.
*/
private void checkACISReadByte(InputStream source, InputStream alt,
String expectedResult) throws Exception {
XmlFeed feed = newFeed();
feed.reset(0);
feed.write(PREFIX.getBytes());
InputStream is = new AlternateContentFilterInputStream(source, alt, feed);
assertFalse(is.markSupported());
for (int ch; (ch = is.read()) != -1; feed.write(ch)) ;
feed.write(SUFFIX.getBytes());