timeutilstest.java

jxta_src_2.41b jxta 2.41b 最新版源码 from www.jxta.org

/*
 *
 * $Id: TimeUtilsTest.java,v 1.2 2004/04/21 23:17:51 bondolo Exp $
 *
 * Copyright (c) 2002 Sun Microsystems, Inc.  All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 *    must not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more information on
 * Project JXTA, please see <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 */

package net.jxta.impl.util;

import junit.framework.*;

/**
 *
 * @author mike
 */
public class TimeUtilsTest extends TestCase {
    
    public TimeUtilsTest(java.lang.String testName) {
        super(testName);
    }
    
    public static void main(java.lang.String[] args) {
        junit.textui.TestRunner.run(suite());
        
        System.err.flush();
        System.out.flush();
    }
    
    public static Test suite() {
        TestSuite suite = new TestSuite(TimeUtilsTest.class);
        return suite;
    }
    
    public void testConstants() {
        assertTrue( "zero milliseconds not less than a millisecond", TimeUtils.ZEROMILLISECONDS < TimeUtils.AMILLISECOND );
        assertTrue( "millisecond not less than a second", TimeUtils.AMILLISECOND < TimeUtils.ASECOND );
        assertTrue( "second not less than a minute", TimeUtils.ASECOND < TimeUtils.AMINUTE );
        assertTrue( "minute not less than an hour", TimeUtils.AMINUTE < TimeUtils.ANHOUR );
        assertTrue( "hour not less than a day", TimeUtils.ANHOUR < TimeUtils.ADAY );
        assertTrue( "day not less than a week", TimeUtils.ADAY < TimeUtils.AWEEK );
        assertTrue( "week not less than a fornight", TimeUtils.AWEEK < TimeUtils.AFORTNIGHT );
        assertTrue( "fornight not less than a year", TimeUtils.AFORTNIGHT < TimeUtils.AYEAR );
        assertTrue( "year not less than a leap year", TimeUtils.AYEAR < TimeUtils.ALEAPYEAR );
    }
    
    public void testTimeNow() {
        long firstNow = TimeUtils.timeNow();
        
        try {
            Thread.sleep(100);
        } catch ( InterruptedException woken ) {
            Thread.interrupted();
        }
        
        long secondNow = TimeUtils.timeNow();
        
        assertTrue( "Time is not working", secondNow > firstNow );
    }
    
    public void testToAbsoluteTimeMillis1() {
        long relativeNow = TimeUtils.toAbsoluteTimeMillis( 0 );
        
        long now = TimeUtils.timeNow();
        
        assertTrue( "relative now is later than now", now >= relativeNow );
        
        try {
            Thread.sleep(100);
        } catch ( InterruptedException woken ) {
            Thread.interrupted();
        }
        
        long aboutepoch = TimeUtils.toAbsoluteTimeMillis( -now );
        
        assertTrue( "epoch is not before now", aboutepoch >= 0 );
        
        long inTheFuture = TimeUtils.toAbsoluteTimeMillis( 10000 );
        
        assertTrue( "Time is running backwards", inTheFuture >= now );
        
        long forever = TimeUtils.toAbsoluteTimeMillis( Long.MAX_VALUE );
        
        assertTrue( "forever is not the end of time",  forever == Long.MAX_VALUE );
        
        long almostForever = TimeUtils.toAbsoluteTimeMillis( Long.MAX_VALUE - 1 );
        
        assertTrue( "Almost forever was not enough",  almostForever == Long.MAX_VALUE );
        
        long bigbang = TimeUtils.toAbsoluteTimeMillis( Long.MIN_VALUE );
        
        assertTrue( "all time is is not the start of time.",  bigbang == Long.MIN_VALUE );
        
        long longlongago = TimeUtils.toAbsoluteTimeMillis( Long.MIN_VALUE + 1 );
        
        assertTrue( "long long ago is not when it should be",  longlongago < now );
        
        long rightaway = TimeUtils.toAbsoluteTimeMillis( 0 );
        
        assertTrue( "right away should not be less than now.", rightaway >= now );
        
    }

    public void testToRelativeTime() {
        long justpast = TimeUtils.toRelativeTimeMillis( -1 );
        
        assertTrue( "-1 is not a mapped value", (justpast > Long.MIN_VALUE) && (justpast < Long.MAX_VALUE)  );
        
        long now = TimeUtils.toRelativeTimeMillis( 0 );
        
        assertTrue( "0 is not a mapped value", (now > Long.MIN_VALUE) && (now < Long.MAX_VALUE)  );
        
        long beginingoftime = TimeUtils.toRelativeTimeMillis( Long.MIN_VALUE );
        
        assertTrue( "beginging of time not beginging of time", beginingoftime == Long.MIN_VALUE );
          
        long endoftime = TimeUtils.toRelativeTimeMillis( Long.MAX_VALUE );
        
        assertTrue( "end of time not end of time", endoftime == Long.MAX_VALUE );
    }

    public void testTimeWarp() {
        
        assertTrue( "Warper active", TimeUtils.WARPBEGAN == 0 ); // private API
        
        TimeUtils.TIMEWARP = 0;   // private API
        
        long now = TimeUtils.timeNow();
        
        TimeUtils.timeWarp( 10000000 );
        
        long later = TimeUtils.timeNow();
        
        assertTrue( "later wasn't after now",  later > now );
    }
    
    public void testAutoWarper() {
        
        assertTrue( "Warper already active", TimeUtils.WARPFACTOR == 1.0 ); // private API
        
        TimeUtils.TIMEWARP = 0;   // private API
        
        long start = TimeUtils.timeNow();

        TimeUtils.autoWarp( (double)(TimeUtils.AWEEK / TimeUtils.ASECOND) );
        
        try {
            Thread.sleep( 3 * TimeUtils.ASECOND );
        } catch ( InterruptedException woken ) {
            Thread.interrupted();
        }
        
        long muchLater = TimeUtils.timeNow();
        
        assertTrue( "much later wasn't in the future.",  TimeUtils.toRelativeTimeMillis( muchLater, start ) >= (3 * TimeUtils.AWEEK ) );
    }
}