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jfreechart example source code file (DefaultKeyedValuesTests.java)

This example jfreechart source code file (DefaultKeyedValuesTests.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 - jfreechart tags/keywords

a, a, b, b, c, c, d, defaultkeyedvalues, defaultkeyedvalues, indexoutofboundsexception, integer, io, k1, k2, k3, util

The jfreechart DefaultKeyedValuesTests.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ----------------------------
 * DefaultKeyedValuesTests.java
 * ----------------------------
 * (C) Copyright 2003-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 05-Mar-2003 : Version 1 (DG);
 * 27-Aug-2003 : Moved SortOrder from org.jfree.data --> org.jfree.util (DG);
 * 31-Jul-2006 : Added test for new clear() method (DG);
 * 01-Aug-2006 : Extended testGetIndex() method (DG);
 * 30-Apr-2007 : Added some new tests (DG);
 * 03-Oct-2007 : Updated testRemoveValue() (DG);
 * 21-Nov-2007 : Added testGetIndex2() method (DG);
 *
 */

package org.jfree.data.junit;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.util.List;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.data.DefaultKeyedValues;
import org.jfree.data.UnknownKeyException;
import org.jfree.util.SortOrder;

/**
 * Tests for the {@link DefaultKeyedValues} class.
 */
public class DefaultKeyedValuesTests extends TestCase {

    /**
     * Returns the tests as a test suite.
     *
     * @return The test suite.
     */
    public static Test suite() {
        return new TestSuite(DefaultKeyedValuesTests.class);
    }

    /**
     * Constructs a new set of tests.
     *
     * @param name  the name of the tests.
     */
    public DefaultKeyedValuesTests(String name) {
        super(name);
    }

    /**
     * Common test setup.
     */
    protected void setUp() {
        // no setup required
    }

    /**
     * Checks that a new instance is empty.
     */
    public void testConstructor() {
        DefaultKeyedValues d = new DefaultKeyedValues();
        assertEquals(0, d.getItemCount());
    }

    /**
     * Some checks for the getItemCount() method.
     */
    public void testGetItemCount() {
        DefaultKeyedValues d = new DefaultKeyedValues();
        assertEquals(0, d.getItemCount());
        d.addValue("A", 1.0);
        assertEquals(1, d.getItemCount());
        d.addValue("B", 2.0);
        assertEquals(2, d.getItemCount());
        d.clear();
        assertEquals(0, d.getItemCount());
    }

    /**
     * Some checks for the getKeys() method.
     */
    public void testGetKeys() {
        DefaultKeyedValues d = new DefaultKeyedValues();
        List keys = d.getKeys();
        assertTrue(keys.isEmpty());
        d.addValue("A", 1.0);
        keys = d.getKeys();
        assertEquals(1, keys.size());
        assertTrue(keys.contains("A"));
        d.addValue("B", 2.0);
        keys = d.getKeys();
        assertEquals(2, keys.size());
        assertTrue(keys.contains("A"));
        assertTrue(keys.contains("B"));
        d.clear();
        keys = d.getKeys();
        assertEquals(0, keys.size());
    }

    /**
     * A simple test for the clear() method.
     */
    public void testClear() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("A", 1.0);
        v1.addValue("B", 2.0);
        assertEquals(2, v1.getItemCount());
        v1.clear();
        assertEquals(0, v1.getItemCount());
    }

    /**
     * Some checks for the getValue() methods.
     */
    public void testGetValue() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        try {
            /* Number n = */ v1.getValue(-1);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        try {
            /* Number n = */ v1.getValue(0);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        DefaultKeyedValues v2 = new DefaultKeyedValues();
        v2.addValue("K1", new Integer(1));
        v2.addValue("K2", new Integer(2));
        v2.addValue("K3", new Integer(3));
        assertEquals(new Integer(3), v2.getValue(2));

        boolean pass = false;
        try {
            /* Number n = */ v2.getValue("KK");
        }
        catch (UnknownKeyException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the getKey() methods.
     */
    public void testGetKey() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        try {
            /* Comparable k = */ v1.getKey(-1);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        try {
            /* Comparable k = */ v1.getKey(0);
            assertTrue(false);
        }
        catch (IndexOutOfBoundsException e) {
            // expected
        }
        DefaultKeyedValues v2 = new DefaultKeyedValues();
        v2.addValue("K1", new Integer(1));
        v2.addValue("K2", new Integer(2));
        v2.addValue("K3", new Integer(3));
        assertEquals("K2", v2.getKey(1));
    }

    /**
     * Some checks for the getIndex() methods.
     */
    public void testGetIndex() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        assertEquals(-1, v1.getIndex("K1"));

        DefaultKeyedValues v2 = new DefaultKeyedValues();
        v2.addValue("K1", new Integer(1));
        v2.addValue("K2", new Integer(2));
        v2.addValue("K3", new Integer(3));
        assertEquals(2, v2.getIndex("K3"));

        // try null
        boolean pass = false;
        try {
            v2.getIndex(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Another check for the getIndex(Comparable) method.
     */
    public void testGetIndex2() {
        DefaultKeyedValues v = new DefaultKeyedValues();
        assertEquals(-1, v.getIndex("K1"));
        v.addValue("K1", 1.0);
        assertEquals(0, v.getIndex("K1"));
        v.removeValue("K1");
        assertEquals(-1, v.getIndex("K1"));
    }
    /**
     * Some checks for the addValue() method.
     */
    public void testAddValue() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("A", 1.0);
        assertEquals(new Double(1.0), v1.getValue("A"));
        v1.addValue("B", 2.0);
        assertEquals(new Double(2.0), v1.getValue("B"));
        v1.addValue("B", 3.0);
        assertEquals(new Double(3.0), v1.getValue("B"));
        assertEquals(2, v1.getItemCount());
        v1.addValue("A", null);
        assertNull(v1.getValue("A"));
        assertEquals(2, v1.getItemCount());

        boolean pass = false;
        try {
            v1.addValue(null, 99.9);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Some checks for the insertValue() method.
     */
    public void testInsertValue() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.insertValue(0, "A", 1.0);
        assertEquals(new Double(1.0), v1.getValue(0));
        v1.insertValue(0, "B", 2.0);
        assertEquals(new Double(2.0), v1.getValue(0));
        assertEquals(new Double(1.0), v1.getValue(1));

        // it's OK to use an index equal to the size of the list
        v1.insertValue(2, "C", 3.0);
        assertEquals(new Double(2.0), v1.getValue(0));
        assertEquals(new Double(1.0), v1.getValue(1));
        assertEquals(new Double(3.0), v1.getValue(2));

        // try replacing an existing value
        v1.insertValue(2, "B", 4.0);
        assertEquals(new Double(1.0), v1.getValue(0));
        assertEquals(new Double(3.0), v1.getValue(1));
        assertEquals(new Double(4.0), v1.getValue(2));
    }

    /**
     * Some checks for the clone() method.
     */
    public void testCloning() {
        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("V1", new Integer(1));
        v1.addValue("V2", null);
        v1.addValue("V3", new Integer(3));
        DefaultKeyedValues v2 = null;
        try {
            v2 = (DefaultKeyedValues) v1.clone();
        }
        catch (CloneNotSupportedException e) {
            System.err.println("Failed to clone.");
        }
        assertTrue(v1 != v2);
        assertTrue(v1.getClass() == v2.getClass());
        assertTrue(v1.equals(v2));

        // confirm that the clone is independent of the original
        v2.setValue("V1", new Integer(44));
        assertFalse(v1.equals(v2));
    }

    /**
     * Check that inserting and retrieving values works as expected.
     */
    public void testInsertAndRetrieve() {

        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("A", new Double(1.0));
        data.addValue("B", new Double(2.0));
        data.addValue("C", new Double(3.0));
        data.addValue("D", null);

        // check key order
        assertEquals(data.getKey(0), "A");
        assertEquals(data.getKey(1), "B");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "D");

        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(1.0));
        assertEquals(data.getValue("B"), new Double(2.0));
        assertEquals(data.getValue("C"), new Double(3.0));
        assertEquals(data.getValue("D"), null);

        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(1.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(3.0));
        assertEquals(data.getValue(3), null);

    }

    /**
     * Some tests for the removeValue() method.
     */
    public void testRemoveValue() {
        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("A", new Double(1.0));
        data.addValue("B", null);
        data.addValue("C", new Double(3.0));
        data.addValue("D", new Double(2.0));
        assertEquals(1, data.getIndex("B"));
        data.removeValue("B");
        assertEquals(-1, data.getIndex("B"));

        boolean pass = false;
        try {
            data.removeValue("XXX");
        }
        catch (UnknownKeyException e) {
            pass = true;
        }
        assertTrue(pass);
    }

    /**
     * Tests sorting of data by key (ascending).
     */
    public void testSortByKeyAscending() {

        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));

        data.sortByKeys(SortOrder.ASCENDING);

        // check key order
        assertEquals(data.getKey(0), "A");
        assertEquals(data.getKey(1), "B");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "D");

        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));

        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(2.0));
        assertEquals(data.getValue(1), null);
        assertEquals(data.getValue(2), new Double(1.0));
        assertEquals(data.getValue(3), new Double(3.0));

    }

    /**
     * Tests sorting of data by key (descending).
     */
    public void testSortByKeyDescending() {

        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));

        data.sortByKeys(SortOrder.DESCENDING);

        // check key order
        assertEquals(data.getKey(0), "D");
        assertEquals(data.getKey(1), "C");
        assertEquals(data.getKey(2), "B");
        assertEquals(data.getKey(3), "A");

        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));

        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(3.0));
        assertEquals(data.getValue(1), new Double(1.0));
        assertEquals(data.getValue(2), null);
        assertEquals(data.getValue(3), new Double(2.0));

    }

    /**
     * Tests sorting of data by value (ascending).
     */
    public void testSortByValueAscending() {

        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));

        data.sortByValues(SortOrder.ASCENDING);

        // check key order
        assertEquals(data.getKey(0), "C");
        assertEquals(data.getKey(1), "A");
        assertEquals(data.getKey(2), "D");
        assertEquals(data.getKey(3), "B");

        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));

        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(1.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(3.0));
        assertEquals(data.getValue(3), null);

    }

    /**
     * Tests sorting of data by key (descending).
     */
    public void testSortByValueDescending() {

        DefaultKeyedValues data = new DefaultKeyedValues();
        data.addValue("C", new Double(1.0));
        data.addValue("B", null);
        data.addValue("D", new Double(3.0));
        data.addValue("A", new Double(2.0));

        data.sortByValues(SortOrder.DESCENDING);

        // check key order
        assertEquals(data.getKey(0), "D");
        assertEquals(data.getKey(1), "A");
        assertEquals(data.getKey(2), "C");
        assertEquals(data.getKey(3), "B");

        // check retrieve value by key
        assertEquals(data.getValue("A"), new Double(2.0));
        assertEquals(data.getValue("B"), null);
        assertEquals(data.getValue("C"), new Double(1.0));
        assertEquals(data.getValue("D"), new Double(3.0));

        // check retrieve value by index
        assertEquals(data.getValue(0), new Double(3.0));
        assertEquals(data.getValue(1), new Double(2.0));
        assertEquals(data.getValue(2), new Double(1.0));
        assertEquals(data.getValue(3), null);

    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {

        DefaultKeyedValues v1 = new DefaultKeyedValues();
        v1.addValue("Key 1", new Double(23));
        v1.addValue("Key 2", null);
        v1.addValue("Key 3", new Double(42));

        DefaultKeyedValues v2 = null;

        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(v1);
            out.close();

            ObjectInput in = new ObjectInputStream(
                new ByteArrayInputStream(buffer.toByteArray())
            );
            v2 = (DefaultKeyedValues) in.readObject();
            in.close();
        }
        catch (Exception e) {
            System.out.println(e.toString());
        }
        assertEquals(v1, v2);

    }

}

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