public void testParseSimpleNetmask() {
final String address = "192.168.0.1";
final String masks[] =
new String[] {"255.0.0.0", "255.255.0.0", "255.255.255.0", "255.255.255.248"};
final String bcastAddresses[] =
new String[] {"192.255.255.255", "192.168.255.255", "192.168.0.255", "192.168.0.7"};
final String lowAddresses[] =
new String[] {"192.0.0.1", "192.168.0.1", "192.168.0.1", "192.168.0.1"};
final String highAddresses[] =
new String[] {"192.255.255.254", "192.168.255.254", "192.168.0.254", "192.168.0.6"};
final String networkAddresses[] =
new String[] {"192.0.0.0", "192.168.0.0", "192.168.0.0", "192.168.0.0"};
final String cidrSignatures[] =
new String[] {"192.168.0.1/8", "192.168.0.1/16", "192.168.0.1/24", "192.168.0.1/29"};
final int usableAddresses[] = new int[] {16777214, 65534, 254, 6};
for (int i = 0; i < masks.length; ++i) {
SubnetUtils utils = new SubnetUtils(address, masks[i]);
SubnetInfo info = utils.getInfo();
assertEquals(bcastAddresses[i], info.getBroadcastAddress());
assertEquals(cidrSignatures[i], info.getCidrSignature());
assertEquals(lowAddresses[i], info.getLowAddress());
assertEquals(highAddresses[i], info.getHighAddress());
assertEquals(networkAddresses[i], info.getNetworkAddress());
assertEquals(usableAddresses[i], info.getAddressCount());
}
}
public void testParseSimpleNetmaskInclusive() {
String address = "192.168.15.7";
String masks[] = new String[] {"255.255.255.252", "255.255.255.254", "255.255.255.255"};
String bcast[] = new String[] {"192.168.15.7", "192.168.15.7", "192.168.15.7"};
String netwk[] = new String[] {"192.168.15.4", "192.168.15.6", "192.168.15.7"};
String lowAd[] = new String[] {"192.168.15.4", "192.168.15.6", "192.168.15.7"};
String highA[] = new String[] {"192.168.15.7", "192.168.15.7", "192.168.15.7"};
String cidrS[] = new String[] {"192.168.15.7/30", "192.168.15.7/31", "192.168.15.7/32"};
int usableAd[] = new int[] {4, 2, 1};
for (int i = 0; i < masks.length; ++i) {
SubnetUtils utils = new SubnetUtils(address, masks[i]);
utils.setInclusiveHostCount(true);
SubnetInfo info = utils.getInfo();
assertEquals("ci " + masks[i], cidrS[i], info.getCidrSignature());
assertEquals("bc " + masks[i], bcast[i], info.getBroadcastAddress());
assertEquals("ac " + masks[i], usableAd[i], info.getAddressCount());
assertEquals("nw " + masks[i], netwk[i], info.getNetworkAddress());
assertEquals("lo " + masks[i], lowAd[i], info.getLowAddress());
assertEquals("hi " + masks[i], highA[i], info.getHighAddress());
}
}
/**
* Test using the inclusiveHostCount flag, which includes the network and broadcast addresses in
* host counts
*/
public void testCidrAddresses() {
SubnetUtils utils = new SubnetUtils("192.168.0.1/8");
utils.setInclusiveHostCount(true);
SubnetInfo info = utils.getInfo();
assertEquals("255.0.0.0", info.getNetmask());
assertEquals(16777216, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/9");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.128.0.0", info.getNetmask());
assertEquals(8388608, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/10");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.192.0.0", info.getNetmask());
assertEquals(4194304, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/11");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.224.0.0", info.getNetmask());
assertEquals(2097152, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/12");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.240.0.0", info.getNetmask());
assertEquals(1048576, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/13");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.248.0.0", info.getNetmask());
assertEquals(524288, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/14");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.252.0.0", info.getNetmask());
assertEquals(262144, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/15");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.254.0.0", info.getNetmask());
assertEquals(131072, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/16");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.0.0", info.getNetmask());
assertEquals(65536, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/17");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.128.0", info.getNetmask());
assertEquals(32768, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/18");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.192.0", info.getNetmask());
assertEquals(16384, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/19");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.224.0", info.getNetmask());
assertEquals(8192, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/20");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.240.0", info.getNetmask());
assertEquals(4096, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/21");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.248.0", info.getNetmask());
assertEquals(2048, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/22");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.252.0", info.getNetmask());
assertEquals(1024, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/23");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.254.0", info.getNetmask());
assertEquals(512, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/24");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.0", info.getNetmask());
assertEquals(256, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/25");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.128", info.getNetmask());
assertEquals(128, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/26");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.192", info.getNetmask());
assertEquals(64, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/27");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.224", info.getNetmask());
assertEquals(32, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/28");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.240", info.getNetmask());
assertEquals(16, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/29");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.248", info.getNetmask());
assertEquals(8, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/30");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.252", info.getNetmask());
assertEquals(4, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/31");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.254", info.getNetmask());
assertEquals(2, info.getAddressCount());
utils = new SubnetUtils("192.168.0.1/32");
utils.setInclusiveHostCount(true);
info = utils.getInfo();
assertEquals("255.255.255.255", info.getNetmask());
assertEquals(1, info.getAddressCount());
new SubnetUtils("192.168.0.1/1");
}