@Test
public void testGetCollection() {

  //create MachineList with a mix of ip addresses , hostnames and ip ranges
  MachineList ml = new MachineList(HOSTNAME_IP_CIDR_LIST);
  Collection<String> col = ml.getCollection();
  //test getCollectionton to return the full collection
  assertEquals(7,ml.getCollection().size());
  for (String item:StringUtils.getTrimmedStringCollection(HOSTNAME_IP_CIDR_LIST)) {
    assertTrue(col.contains(item));
  }
}