/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* -------------------------
* FixedMillisecondTest.java
* -------------------------
* (C) Copyright 2002-2013, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 29-Jan-2002 : Version 1 (DG);
* 17-Oct-2002 : Fixed errors reported by Checkstyle (DG);
* 21-Oct-2003 : Added hashCode test (DG);
* 28-May-2008 : Added test for immutability (DG);
*
*/
package org.jfree.data.time;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertEquals;
import java.util.Date;
import org.jfree.chart.TestUtilities;
import org.junit.Test;
/**
* Tests for the {@link FixedMillisecond} class.
*/
public class FixedMillisecondTest {
/**
* Serialize an instance, restore it, and check for equality.
*/
@Test
public void testSerialization() {
FixedMillisecond m1 = new FixedMillisecond();
FixedMillisecond m2 = (FixedMillisecond) TestUtilities.serialised(m1);
assertEquals(m1, m2);
}
/**
* Two objects that are equal are required to return the same hashCode.
*/
@Test
public void testHashcode() {
FixedMillisecond m1 = new FixedMillisecond(500000L);
FixedMillisecond m2 = new FixedMillisecond(500000L);
assertTrue(m1.equals(m2));
int h1 = m1.hashCode();
int h2 = m2.hashCode();
assertEquals(h1, h2);
}
/**
* The {@link FixedMillisecond} class is immutable, so should not be
* {@link Cloneable}.
*/
@Test
public void testNotCloneable() {
FixedMillisecond m = new FixedMillisecond(500000L);
assertFalse(m instanceof Cloneable);
}
/**
* A check for immutability.
*/
@Test
public void testImmutability() {
Date d = new Date(20L);
FixedMillisecond fm = new FixedMillisecond(d);
d.setTime(22L);
assertEquals(20L, fm.getFirstMillisecond());
}
}