001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.commons.net.ntp;
018
019 import java.util.Date;
020 import java.util.Calendar;
021 import junit.framework.TestCase;
022 import org.apache.commons.net.ntp.TimeStamp;
023
024 /**
025 * Test class that validates assertions for the basic TimeStamp operations and comparisons.
026 *
027 * @author Jason Mathews, MITRE Corp
028 */
029 public class TimeStampTest extends TestCase {
030
031 private static final String TIME1 = "c1a9ae1c.cf6ac48d"; // Tue, Dec 17 2002 14:07:24.810 UTC
032 private static final String TIME2 = "c1a9ae1c.cf6ac48f"; // Tue, Dec 17 2002 14:07:24.810 UTC
033 private static final String TIME3 = "c1a9ae1d.cf6ac48e"; // Tue, Dec 17 2002 14:07:25.810 UTC
034
035 /***
036 * main for running the test.
037 ***/
038 public static void main(String args[])
039 {
040 junit.textui.TestRunner.run(TimeStampTest.class);
041 }
042
043 public void testCompare() {
044
045 TimeStamp ts1 = new TimeStamp(TIME1); // Tue, Dec 17 2002 14:07:24.810 UTC
046 TimeStamp ts2 = new TimeStamp(TIME1);
047 TimeStamp ts3 = new TimeStamp(TIME2); // Tue, Dec 17 2002 14:07:24.810 UTC
048 TimeStamp ts4 = new TimeStamp(TIME3); // Tue, Dec 17 2002 14:07:25.810 UTC
049
050 // do assertion tests on TimeStamp class
051 assertEquals("equals(1,2)", ts1, ts2);
052 assertTrue("compareTo(1,2)", ts1.compareTo(ts2) == 0);
053 assertEquals("ntpValue(1,2)", ts1.ntpValue(), ts2.ntpValue());
054 assertEquals("hashCode(1,2)", ts1.hashCode(), ts2.hashCode());
055 assertEquals("ts1==ts1", ts1, ts1);
056
057 // timestamps in ts1 (TIME1) and ts3 (TIME2) are only off by the smallest
058 // fraction of a second (~200 picoseconds) so the times are not equal but
059 // when converted to Java dates (in milliseconds) they will be equal.
060 assertTrue("ts1 != ts3", !ts1.equals(ts3));
061 assertTrue("compareTo(1,3)", ts1.compareTo(ts3) == -1);
062 assertEquals("seconds", ts1.getSeconds(), ts3.getSeconds());
063 assertTrue("fraction", ts1.getFraction() != ts3.getFraction());
064 assertTrue("ntpValue(1,3)", ts1.ntpValue() != ts3.ntpValue());
065 assertTrue("hashCode(1,3)", ts1.hashCode() != ts3.hashCode());
066 long time1 = ts1.getTime();
067 long time3 = ts3.getTime();
068 assertEquals("equals(time1,3)", time1, time3); // ntpTime1 != ntpTime3 but JavaTime(t1) == JavaTime(t3)...
069
070 assertTrue("ts3 != ts4", !ts3.equals(ts4));
071 assertTrue("time3 != ts4.time", time3 != ts4.getTime());
072 }
073
074 public void testUTCString() {
075 TimeStamp ts1 = new TimeStamp(TIME1); // Tue, Dec 17 2002 14:07:24.810 UTC
076 String actual = ts1.toUTCString();
077 assertEquals("Tue, Dec 17 2002 14:07:24.810 UTC", actual);
078 }
079
080 public void testDateConversion() {
081 // convert current date to NtpTimeStamp then compare Java date
082 // computed from NTP timestamp with original Java date.
083 Calendar refCal = Calendar.getInstance(java.util.TimeZone.getTimeZone("UTC"));
084 Date refDate = refCal.getTime();
085 TimeStamp ts = new TimeStamp(refDate);
086 assertEquals("refDate.getTime()", refDate.getTime(), ts.getTime());
087 Date tsDate = ts.getDate();
088 assertEquals(refDate, tsDate);
089 }
090
091 }