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Java > Open Source Codes > org > apache > commons > net > time > TimeTCPClientTest


1 package org.apache.commons.net.time;
2
3 /* ====================================================================
4  *
5  * The Apache Software License, Version 1.1
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11  * modification, are permitted provided that the following conditions
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22  * 3. The end-user documentation included with the redistribution, if
23  * any, must include the following acknowlegement:
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27  * if and wherever such third-party acknowlegements normally appear.
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56  */
57
58 import java.net.InetAddress JavaDoc;
59 import java.util.Calendar JavaDoc;
60 import java.io.IOException JavaDoc;
61 import java.util.TimeZone JavaDoc;
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 JavaDoc[] 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 JavaDoc
84     {
85     try {
86             server1 = new TimeTestSimpleServer(_port);
87             server1.connect();
88     } catch (IOException JavaDoc 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 JavaDoc utcZone = TimeZone.getTimeZone("UTC");
104         Calendar JavaDoc 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 JavaDoc
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 JavaDoc e)
168         {
169         }
170     }
171 }
172
173
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