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jfreechart example source code file (GridArrangementTests.java)

This example jfreechart source code file (GridArrangementTests.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

block, blockcontainer, blockcontainer, bytearrayinputstream, bytearrayoutputstream, emptyblock, epsilon, epsilon, gridarrangement, gridarrangement, gridarrangementtests, io, rectangleconstraint, size2d, size2d

The jfreechart GridArrangementTests.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.]
 *
 * -------------------------
 * GridArrangementTests.java
 * -------------------------
 * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 08-Mar-2005 : Version 1 (DG);
 * 03-Dec-2008 : Added more tests (DG);
 *
 */

package org.jfree.chart.block.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 junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.jfree.chart.block.Block;
import org.jfree.chart.block.BlockContainer;
import org.jfree.chart.block.EmptyBlock;
import org.jfree.chart.block.GridArrangement;
import org.jfree.chart.block.LengthConstraintType;
import org.jfree.chart.block.RectangleConstraint;
import org.jfree.data.Range;
import org.jfree.ui.Size2D;

/**
 * Tests for the {@link GridArrangement} class.
 */
public class GridArrangementTests extends TestCase {

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

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

    /**
     * Confirm that the equals() method can distinguish all the required fields.
     */
    public void testEquals() {
        GridArrangement f1 = new GridArrangement(11, 22);
        GridArrangement f2 = new GridArrangement(11, 22);
        assertTrue(f1.equals(f2));
        assertTrue(f2.equals(f1));

        f1 = new GridArrangement(33, 22);
        assertFalse(f1.equals(f2));
        f2 = new GridArrangement(33, 22);
        assertTrue(f1.equals(f2));

        f1 = new GridArrangement(33, 44);
        assertFalse(f1.equals(f2));
        f2 = new GridArrangement(33, 44);
        assertTrue(f1.equals(f2));
    }

    /**
     * Immutable - cloning is not necessary.
     */
    public void testCloning() {
        GridArrangement f1 = new GridArrangement(1, 2);
        assertFalse(f1 instanceof Cloneable);
    }

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        GridArrangement f1 = new GridArrangement(33, 44);
        GridArrangement f2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(f1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            f2 = (GridArrangement) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(f1, f2);
    }

    private static final double EPSILON = 0.000000001;

    /**
     * Test arrangement with no constraints.
     */
    public void testNN() {
        BlockContainer c = createTestContainer1();
        Size2D s = c.arrange(null, RectangleConstraint.NONE);
        assertEquals(90.0, s.width, EPSILON);
        assertEquals(33.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a fixed width and no height constraint.
     */
    public void testFN() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = new RectangleConstraint(100.0, null,
                LengthConstraintType.FIXED, 0.0, null,
                LengthConstraintType.NONE);
        Size2D s = c.arrange(null, constraint);
        assertEquals(100.0, s.width, EPSILON);
        assertEquals(33.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a fixed height and no width constraint.
     */
    public void testNF() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = RectangleConstraint.NONE.toFixedHeight(
                100.0);
        Size2D s = c.arrange(null, constraint);
        assertEquals(90.0, s.width, EPSILON);
        assertEquals(100.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a range for the width and a fixed height.
     */
    public void testRF() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = new RectangleConstraint(new Range(40.0,
                60.0), 100.0);
        Size2D s = c.arrange(null, constraint);
        assertEquals(60.0, s.width, EPSILON);
        assertEquals(100.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a range for the width and height.
     */
    public void testRR() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = new RectangleConstraint(new Range(40.0,
                60.0), new Range(50.0, 70.0));
        Size2D s = c.arrange(null, constraint);
        assertEquals(60.0, s.width, EPSILON);
        assertEquals(50.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a range for the width and no height constraint.
     */
    public void testRN() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = RectangleConstraint.NONE.toRangeWidth(
                new Range(40.0, 60.0));
        Size2D s = c.arrange(null, constraint);
        assertEquals(60.0, s.width, EPSILON);
        assertEquals(33.0, s.height, EPSILON);
    }

    /**
     * Test arrangement with a range for the height and no width constraint.
     */
    public void testNR() {
        BlockContainer c = createTestContainer1();
        RectangleConstraint constraint = RectangleConstraint.NONE.toRangeHeight(
                new Range(40.0, 60.0));
        Size2D s = c.arrange(null, constraint);
        assertEquals(90.0, s.width, EPSILON);
        assertEquals(40.0, s.height, EPSILON);
    }

    private BlockContainer createTestContainer1() {
        Block b1 = new EmptyBlock(10, 11);
        Block b2 = new EmptyBlock(20, 22);
        Block b3 = new EmptyBlock(30, 33);
        BlockContainer result = new BlockContainer(new GridArrangement(1, 3));
        result.add(b1);
        result.add(b2);
        result.add(b3);
        return result;
    }

    /**
     * The arrangement should be able to handle null blocks in the layout.
     */
    public void testNullBlock_FF() {
        BlockContainer c = new BlockContainer(new GridArrangement(1, 1));
        c.add(null);
        Size2D s = c.arrange(null, new RectangleConstraint(20, 10));
        assertEquals(20.0, s.getWidth(), EPSILON);
        assertEquals(10.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle null blocks in the layout.
     */
    public void testNullBlock_FN() {
        BlockContainer c = new BlockContainer(new GridArrangement(1, 1));
        c.add(null);
        Size2D s = c.arrange(null, RectangleConstraint.NONE.toFixedWidth(10));
        assertEquals(10.0, s.getWidth(), EPSILON);
        assertEquals(0.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle null blocks in the layout.
     */
    public void testNullBlock_FR() {
        BlockContainer c = new BlockContainer(new GridArrangement(1, 1));
        c.add(null);
        Size2D s = c.arrange(null, new RectangleConstraint(30.0, new Range(5.0,
                10.0)));
        assertEquals(30.0, s.getWidth(), EPSILON);
        assertEquals(5.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle null blocks in the layout.
     */
    public void testNullBlock_NN() {
        BlockContainer c = new BlockContainer(new GridArrangement(1, 1));
        c.add(null);
        Size2D s = c.arrange(null, RectangleConstraint.NONE);
        assertEquals(0.0, s.getWidth(), EPSILON);
        assertEquals(0.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle less blocks than grid spaces.
     */
    public void testGridNotFull_FF() {
        Block b1 = new EmptyBlock(5, 5);
        BlockContainer c = new BlockContainer(new GridArrangement(2, 3));
        c.add(b1);
        Size2D s = c.arrange(null, new RectangleConstraint(200, 100));
        assertEquals(200.0, s.getWidth(), EPSILON);
        assertEquals(100.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle less blocks than grid spaces.
     */
    public void testGridNotFull_FN() {
        Block b1 = new EmptyBlock(5, 5);
        BlockContainer c = new BlockContainer(new GridArrangement(2, 3));
        c.add(b1);
        Size2D s = c.arrange(null, RectangleConstraint.NONE.toFixedWidth(30.0));
        assertEquals(30.0, s.getWidth(), EPSILON);
        assertEquals(10.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle less blocks than grid spaces.
     */
    public void testGridNotFull_FR() {
        Block b1 = new EmptyBlock(5, 5);
        BlockContainer c = new BlockContainer(new GridArrangement(2, 3));
        c.add(b1);
        Size2D s = c.arrange(null, new RectangleConstraint(30.0, new Range(5.0,
                10.0)));
        assertEquals(30.0, s.getWidth(), EPSILON);
        assertEquals(10.0, s.getHeight(), EPSILON);
    }

    /**
     * The arrangement should be able to handle less blocks than grid spaces.
     */
    public void testGridNotFull_NN() {
        Block b1 = new EmptyBlock(5, 5);
        BlockContainer c = new BlockContainer(new GridArrangement(2, 3));
        c.add(b1);
        Size2D s = c.arrange(null, RectangleConstraint.NONE);
        assertEquals(15.0, s.getWidth(), EPSILON);
        assertEquals(10.0, s.getHeight(), EPSILON);
    }

}

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