chbuffer.append(teststrs[i]);
outbuffer.writeLine(chbuffer);
}
//these write operations should have no effect
outbuffer.writeLine((String)null);
outbuffer.writeLine((CharArrayBuffer)null);
outbuffer.flush();
long bytesWritten = outbuffer.getMetrics().getBytesTransferred();
long expected = 0;
for (int i = 0; i < teststrs.length; i++) {