1   package org.apache.commons.net.time;
2   
3   /* ====================================================================
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5    * The Apache Software License, Version 1.1
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25   *        Apache Software Foundation (http://www.apache.org/)."
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57  
58  import java.net.InetAddress;
59  import java.util.Calendar;
60  import java.io.IOException;
61  import java.util.TimeZone;
62  
63  import junit.framework.TestCase;
64  import org.apache.commons.net.TimeTCPClient;
65  
66  public class TimeTCPClientTest extends TestCase
67  {
68      private TimeTestSimpleServer server1;
69  
70      private int _port = 3333; // default test port
71  
72      /***
73       * main for running the test.
74       ***/
75      public static void main(String[] args)
76      {
77          junit.textui.TestRunner.run(TimeTCPClientTest.class);
78      }
79  
80      /***
81       * open connections needed for the tests for the test.
82       ***/
83      protected void openConnections() throws Exception
84      {
85  	try {
86              server1 = new TimeTestSimpleServer(_port);
87              server1.connect();
88  	} catch (IOException ioe)
89  	{
90  	    // try again on another port
91  	    _port = 4000;
92              server1 = new TimeTestSimpleServer(_port);
93              server1.connect();
94  	}
95          server1.start();
96      }
97  
98      /***
99       *  tests the constant basetime used by TimeClient against tha
100      *  computed from Calendar class.
101      */
102     public void testInitial() {
103         TimeZone utcZone = TimeZone.getTimeZone("UTC");
104         Calendar calendar = Calendar.getInstance(utcZone);
105         calendar.set(1900, Calendar.JANUARY, 1, 0, 0, 0);
106         calendar.set(Calendar.MILLISECOND, 0);
107         long baseTime = calendar.getTime().getTime() / 1000L;
108 
109         assertTrue(baseTime == -TimeTCPClient.SECONDS_1900_TO_1970);
110     }
111 
112     /***
113      * tests the times retrieved via the Time protocol implementation.
114      ***/
115     public void testCompareTimes() throws Exception
116     {
117         openConnections();
118 
119         long time, time2;
120         long clientTime, clientTime2;
121         try
122         {
123             TimeTCPClient client = new TimeTCPClient();
124             try
125             {
126                 // We want to timeout if a response takes longer than 60 seconds
127                 client.setDefaultTimeout(60000);
128                 client.connect(InetAddress.getLocalHost(), _port);
129                 clientTime = client.getDate().getTime();
130                 time = System.currentTimeMillis();
131             } finally
132             {
133                 client.disconnect();
134             }
135 
136             try
137             {
138                 // We want to timeout if a response takes longer than 60 seconds
139                 client.setDefaultTimeout(60000);
140                 client.connect(InetAddress.getLocalHost(), _port);
141                 clientTime2 = (client.getTime() - TimeTCPClient.SECONDS_1900_TO_1970)*1000L;
142                 time2 = System.currentTimeMillis();
143             } finally
144             {
145                 client.disconnect();
146             }
147 
148         } finally
149         {
150             closeConnections();
151         }
152 
153       // current time shouldn't differ from time reported via network by 5 seconds
154       assertTrue(Math.abs(time - clientTime) < 5000);
155       assertTrue(Math.abs(time2 - clientTime2) < 5000);
156     }
157 
158     /***
159      * closes all the connections
160      ***/
161     protected void closeConnections()
162     {
163         try
164         {
165             server1.stop();
166             Thread.sleep(1000);
167         } catch (Exception e)
168         {
169         }
170     }
171 }
172