RetransmitTable table=new RetransmitTable(3, 10, 0);
for(long i=0; i < 50; i++)
addAndGet(table, i, "hello-" + i);
System.out.println("table = " + table);
assert table.size() == 50;
assertCapacity(table.capacity(), table.getLength(), 10);
assert table.getHighestPurged() == 0;
assert table.getHighest() == 49;
table.purge(43);
addAndGet(table, 52, "hello-52");