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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.core;
     18 
     19 import junit.framework.TestCase;
     20 
     21 import java.net.InetAddress;
     22 import java.net.UnknownHostException;
     23 import java.util.Random;
     24 
     25 import android.test.suitebuilder.annotation.Suppress;
     26 
     27 /**
     28  * Tests InetAddr class by checking methods to resolve domains to IP addresses
     29  * and by checking if the class returns correct addresses for local host address
     30  * and host name.
     31  */
     32 @Suppress
     33 public class InetAddrTest extends TestCase {
     34     private static final String[] HOSTS = {
     35             "localhost", "www.google.com", "www.slashdot.org", "www.wikipedia.org",
     36             "www.paypal.com", "www.cnn.com", "www.yahoo.com", "www.amazon.com",
     37             "www.ebay.com", "www.android.com"
     38     };
     39 
     40     public void testInetAddr() throws Exception {
     41         byte[] raw;
     42 
     43         InetAddress ia = InetAddress.getByName("localhost");
     44 
     45         raw = ia.getAddress();
     46 
     47         assertEquals(127, raw[0]);
     48         assertEquals(0, raw[1]);
     49         assertEquals(0, raw[2]);
     50         assertEquals(1, raw[3]);
     51 
     52         ia = InetAddress.getByName("127.0.0.1");
     53 
     54         raw = ia.getAddress();
     55 
     56         assertEquals(127, raw[0]);
     57         assertEquals(0, raw[1]);
     58         assertEquals(0, raw[2]);
     59         assertEquals(1, raw[3]);
     60 
     61         ia = InetAddress.getByName(null);
     62 
     63         try {
     64             InetAddress.getByName(".0.0.1");
     65             fail("expected ex");
     66         } catch (UnknownHostException ex) {
     67             // expected
     68         }
     69 
     70         try {
     71             InetAddress.getByName("thereisagoodchancethisdomaindoesnotexist.weirdtld");
     72             fail("expected ex");
     73         } catch (UnknownHostException ex) {
     74             // expected
     75         }
     76 
     77         try {
     78             InetAddress.getByName("127.0.0.");
     79             fail("expected ex");
     80         } catch (UnknownHostException ex) {
     81             // expected
     82         }
     83 
     84         Random random = new Random();
     85         int count = 0;
     86         for (int i = 0; i < 100; i++) {
     87             int index = random.nextInt(HOSTS.length);
     88             try {
     89                 InetAddress.getByName(HOSTS[index]);
     90                 count++;
     91                 try {
     92                     Thread.sleep(50);
     93                 } catch (InterruptedException ex) {
     94                 }
     95             } catch (UnknownHostException ex) {
     96             }
     97         }
     98         assertEquals("Not all host lookups succeeded", 100, count);
     99     }
    100 }
    101