1   package org.apache.commons.net.ntp;
2   
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57  
58  import java.util.Date;
59  import java.util.Calendar;
60  import junit.framework.TestCase;
61  import org.apache.commons.net.ntp.TimeStamp;
62  
63  /**
64   * Test class that validates assertions for the basic TimeStamp operations and comparisons.
65   *
66   * @author Jason Mathews, MITRE Corp
67   */
68  public class TimeStampTest extends TestCase {
69  
70      private static final String TIME1 = "c1a9ae1c.cf6ac48d";  // Tue, Dec 17 2002 14:07:24.810 UTC
71      private static final String TIME2 = "c1a9ae1c.cf6ac48f";  // Tue, Dec 17 2002 14:07:24.810 UTC
72      private static final String TIME3 = "c1a9ae1d.cf6ac48e";  // Tue, Dec 17 2002 14:07:25.810 UTC
73  
74      /***
75       * main for running the test.
76       ***/
77      public static void main(String args[])
78      {
79          junit.textui.TestRunner.run(TimeStampTest.class);
80      }
81  
82      public void testCompare() {
83  
84          TimeStamp ts1 = new TimeStamp(TIME1);	// Tue, Dec 17 2002 14:07:24.810 UTC
85          TimeStamp ts2 = new TimeStamp(TIME1);
86          TimeStamp ts3 = new TimeStamp(TIME2); 	// Tue, Dec 17 2002 14:07:24.810 UTC
87          TimeStamp ts4 = new TimeStamp(TIME3); 	// Tue, Dec 17 2002 14:07:25.810 UTC
88  
89          // do assertion tests on TimeStamp class
90          assertEquals("equals(1,2)", ts1, ts2);
91          assertTrue("compareTo(1,2)", ts1.compareTo(ts2) == 0);
92          assertEquals("ntpValue(1,2)", ts1.ntpValue(), ts2.ntpValue());
93          assertEquals("hashCode(1,2)", ts1.hashCode(), ts2.hashCode());
94          assertEquals("ts1==ts1", ts1, ts1);
95  
96  	// timestamps in ts1 (TIME1) and ts3 (TIME2) are only off by the smallest
97  	// fraction of a second (~200 picoseconds) so the times are not equal but
98  	// when converted to Java dates (in milliseconds) they will be equal.
99          assertTrue("ts1 != ts3", !ts1.equals(ts3));
100         assertTrue("compareTo(1,3)", ts1.compareTo(ts3) == -1);
101         assertEquals("seconds", ts1.getSeconds(), ts3.getSeconds());
102         assertTrue("fraction", ts1.getFraction() != ts3.getFraction());
103         assertTrue("ntpValue(1,3)", ts1.ntpValue() != ts3.ntpValue());
104         assertTrue("hashCode(1,3)", ts1.hashCode() != ts3.hashCode());
105         long time1 = ts1.getTime();
106         long time3 = ts3.getTime();
107         assertEquals("equals(time1,3)", time1, time3); // ntpTime1 != ntpTime3 but JavaTime(t1) == JavaTime(t3)...
108 
109         assertTrue("ts3 != ts4", !ts3.equals(ts4));
110         assertTrue("time3 != ts4.time", time3 != ts4.getTime());
111     }
112 
113     public void testUTCString() {
114         TimeStamp ts1 = new TimeStamp(TIME1);	// Tue, Dec 17 2002 14:07:24.810 UTC
115 	String actual = ts1.toUTCString();
116 	assertEquals("Tue, Dec 17 2002 14:07:24.810 UTC", actual);
117     }
118 
119     public void testDateConversion() {
120 	// convert current date to NtpTimeStamp then compare Java date
121 	// computed from NTP timestamp with original Java date.
122 	Calendar refCal = Calendar.getInstance(java.util.TimeZone.getTimeZone("UTC"));
123 	Date refDate = refCal.getTime();
124 	TimeStamp ts = new TimeStamp(refDate);
125 	assertEquals("refDate.getTime()", refDate.getTime(), ts.getTime());
126 	Date tsDate = ts.getDate();
127 	assertEquals(refDate, tsDate);
128     }
129 
130 }