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*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/* @test 01/02/14
* @bug 4405354
* @summary Exercise java.net.NetworkInterface
*/
import java.net.NetworkInterface;
import java.net.InetAddress;
import java.util.Enumeration;
public class Test {
public static void main(String args[]) throws Exception {
Enumeration nifs = NetworkInterface.getNetworkInterfaces();
while (nifs.hasMoreElements()) {
NetworkInterface ni = (NetworkInterface)nifs.nextElement();
String name = ni.getName();
System.out.println("\n" + name);
/*
* Enumeration the IP addresses on this interface
*/
Enumeration addrs = ni.getInetAddresses();
while (addrs.hasMoreElements()) {
InetAddress addr = (InetAddress)addrs.nextElement();
System.out.println(addr);
if (NetworkInterface.getByInetAddress(addr) == null) {
throw new Exception("getByInetAddress returned null");
}
}
System.out.println("getInetAddresses() test passed.");
/*
* Check equals and hashCode contract
*/
NetworkInterface ni2 = NetworkInterface.getByName(name);
if (!ni2.equals(ni)) {
throw new Exception("getByName returned: " + ni2);
}
if (!ni.equals(ni2)) {
throw new Exception("equals specification broken");
}
System.out.println("equals() tests passed.");
if (ni2.hashCode() != ni.hashCode()) {
throw new Exception("hashCode contract broken");
}
System.out.println("hashCode() test passed.");
}
// misc tests :-
// getByXXX(null) should throw NPE
// getByXXX("garbage") should return null
System.out.println("\nMiscellenous tests: ");
try {
NetworkInterface.getByName(null);
} catch (NullPointerException npe) {
}
System.out.println("getByName(null) test passed.");
try {
NetworkInterface.getByInetAddress(null);
} catch (NullPointerException npe) {
}
System.out.println("getByInetAddress(null) test passed.");
if (NetworkInterface.getByName("not-a-valid-name") != null) {
throw new Exception
("getByName returned unexpected interface: null expected");
}
System.out.println("getByName(<unknown>) test passed.");
InetAddress ia = InetAddress.getByName("255.255.255.255");
if (NetworkInterface.getByInetAddress(ia) != null) {
throw new Exception
("getByInetAddress returned unexpected interface: null expected");
}
System.out.println("getByName(getByInetAddress(<unknown>) test passed.");
}
}