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Commons Net example source code file (TimeStampTest.java)

This example Commons Net source code file (TimeStampTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Net tags/keywords

calendar, date, dec, dec, javatime, string, testcase, time1, timestamp, timestamp, tue, tue, utc, utc, util

The Commons Net TimeStampTest.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.net.ntp;

import java.util.Date;
import java.util.Calendar;
import junit.framework.TestCase;
import org.apache.commons.net.ntp.TimeStamp;

/**
 * Test class that validates assertions for the basic TimeStamp operations and comparisons.
 *
 * @author Jason Mathews, MITRE Corp
 */
public class TimeStampTest extends TestCase {

    private static final String TIME1 = "c1a9ae1c.cf6ac48d";  // Tue, Dec 17 2002 14:07:24.810 UTC
    private static final String TIME2 = "c1a9ae1c.cf6ac48f";  // Tue, Dec 17 2002 14:07:24.810 UTC
    private static final String TIME3 = "c1a9ae1d.cf6ac48e";  // Tue, Dec 17 2002 14:07:25.810 UTC

    public void testCompare() {

        TimeStamp ts1 = new TimeStamp(TIME1);   // Tue, Dec 17 2002 14:07:24.810 UTC
        TimeStamp ts2 = new TimeStamp(TIME1);
        TimeStamp ts3 = new TimeStamp(TIME2);   // Tue, Dec 17 2002 14:07:24.810 UTC
        TimeStamp ts4 = new TimeStamp(TIME3);   // Tue, Dec 17 2002 14:07:25.810 UTC

        // do assertion tests on TimeStamp class
        assertEquals("equals(1,2)", ts1, ts2);
        assertEquals("compareTo(1,2)", 0, ts1.compareTo(ts2));
        assertEquals("ntpValue(1,2)", ts1.ntpValue(), ts2.ntpValue());
        assertEquals("hashCode(1,2)", ts1.hashCode(), ts2.hashCode());
        assertEquals("ts1==ts1", ts1, ts1);

    // timestamps in ts1 (TIME1) and ts3 (TIME2) are only off by the smallest
    // fraction of a second (~200 picoseconds) so the times are not equal but
    // when converted to Java dates (in milliseconds) they will be equal.
        assertTrue("ts1 != ts3", !ts1.equals(ts3));
        assertEquals("compareTo(1,3)", -1, ts1.compareTo(ts3));
        assertEquals("seconds", ts1.getSeconds(), ts3.getSeconds());
        assertTrue("fraction", ts1.getFraction() != ts3.getFraction());
        assertTrue("ntpValue(1,3)", ts1.ntpValue() != ts3.ntpValue());
        assertTrue("hashCode(1,3)", ts1.hashCode() != ts3.hashCode());
        long time1 = ts1.getTime();
        long time3 = ts3.getTime();
        assertEquals("equals(time1,3)", time1, time3); // ntpTime1 != ntpTime3 but JavaTime(t1) == JavaTime(t3)...

        assertTrue("ts3 != ts4", !ts3.equals(ts4));
        assertTrue("time3 != ts4.time", time3 != ts4.getTime());
    }

    public void testUTCString() {
        TimeStamp ts1 = new TimeStamp(TIME1);   // Tue, Dec 17 2002 14:07:24.810 UTC
    String actual = ts1.toUTCString();
    assertEquals("Tue, Dec 17 2002 14:07:24.810 UTC", actual);
    }

    public void testDateConversion() {
    // convert current date to NtpTimeStamp then compare Java date
    // computed from NTP timestamp with original Java date.
    Calendar refCal = Calendar.getInstance(java.util.TimeZone.getTimeZone("UTC"));
    Date refDate = refCal.getTime();
    TimeStamp ts = new TimeStamp(refDate);
    assertEquals("refDate.getTime()", refDate.getTime(), ts.getTime());
    Date tsDate = ts.getDate();
    assertEquals(refDate, tsDate);
    }

}

Other Commons Net examples (source code examples)

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