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jfreechart example source code file (LevelRendererTests.java)
The jfreechart LevelRendererTests.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.] * * ----------------------- * LevelRendererTests.java * ----------------------- * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * Changes * ------- * 29-Mar-2005 : Version 1 (DG); * 23-Apr-2008 : Added testPublicCloneable (DG); * */ package org.jfree.chart.renderer.category.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.JFreeChart; import org.jfree.chart.LegendItem; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.renderer.category.LevelRenderer; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.util.PublicCloneable; /** * Tests for the {@link LevelRenderer} class. */ public class LevelRendererTests extends TestCase { /** * Returns the tests as a test suite. * * @return The test suite. */ public static Test suite() { return new TestSuite(LevelRendererTests.class); } /** * Constructs a new set of tests. * * @param name the name of the tests. */ public LevelRendererTests(String name) { super(name); } /** * Test that the equals() method distinguishes all fields. */ public void testEquals() { LevelRenderer r1 = new LevelRenderer(); LevelRenderer r2 = new LevelRenderer(); assertTrue(r1.equals(r2)); assertTrue(r2.equals(r1)); r1.setItemMargin(0.123); assertFalse(r1.equals(r2)); r2.setItemMargin(0.123); assertTrue(r1.equals(r2)); r1.setMaximumItemWidth(0.234); assertFalse(r1.equals(r2)); r2.setMaximumItemWidth(0.234); assertTrue(r1.equals(r2)); } /** * Two objects that are equal are required to return the same hashCode. */ public void testHashcode() { LevelRenderer r1 = new LevelRenderer(); LevelRenderer r2 = new LevelRenderer(); assertTrue(r1.equals(r2)); int h1 = r1.hashCode(); int h2 = r2.hashCode(); assertEquals(h1, h2); } /** * Confirm that cloning works. */ public void testCloning() { LevelRenderer r1 = new LevelRenderer(); r1.setItemMargin(0.123); r1.setMaximumItemWidth(0.234); LevelRenderer r2 = null; try { r2 = (LevelRenderer) r1.clone(); } catch (CloneNotSupportedException e) { System.err.println("Failed to clone."); } assertTrue(r1 != r2); assertTrue(r1.getClass() == r2.getClass()); assertTrue(r1.equals(r2)); assertTrue(checkIndependence(r1, r2)); } /** * Check that this class implements PublicCloneable. */ public void testPublicCloneable() { LevelRenderer r1 = new LevelRenderer(); assertTrue(r1 instanceof PublicCloneable); } /** * Checks that the two renderers are equal but independent of one another. * * @param r1 renderer 1. * @param r2 renderer 2. * * @return A boolean. */ private boolean checkIndependence(LevelRenderer r1, LevelRenderer r2) { // should be equal... boolean b0 = r1.equals(r2); // and independent... r1.setItemMargin(0.0); boolean b1 = !r1.equals(r2); r2.setItemMargin(0.0); boolean b2 = r1.equals(r2); return b0 && b1 && b2; } /** * Serialize an instance, restore it, and check for equality. */ public void testSerialization() { LevelRenderer r1 = new LevelRenderer(); LevelRenderer r2 = null; try { ByteArrayOutputStream buffer = new ByteArrayOutputStream(); ObjectOutput out = new ObjectOutputStream(buffer); out.writeObject(r1); out.close(); ObjectInput in = new ObjectInputStream( new ByteArrayInputStream(buffer.toByteArray()) ); r2 = (LevelRenderer) in.readObject(); in.close(); } catch (Exception e) { e.printStackTrace(); } assertEquals(r1, r2); } /** * Draws the chart with a <code>null info object to make sure that * no exceptions are thrown (particularly by code in the renderer). */ public void testDrawWithNullInfo() { boolean success = false; try { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.0, "S1", "C1"); CategoryPlot plot = new CategoryPlot(dataset, new CategoryAxis("Category"), new NumberAxis("Value"), new LevelRenderer()); JFreeChart chart = new JFreeChart(plot); /* BufferedImage image = */ chart.createBufferedImage(300, 200, null); success = true; } catch (NullPointerException e) { e.printStackTrace(); success = false; } assertTrue(success); } /** * A check for the datasetIndex and seriesIndex fields in the LegendItem * returned by the getLegendItem() method. */ public void testGetLegendItemSeriesIndex() { DefaultCategoryDataset dataset0 = new DefaultCategoryDataset(); dataset0.addValue(21.0, "R1", "C1"); dataset0.addValue(22.0, "R2", "C1"); DefaultCategoryDataset dataset1 = new DefaultCategoryDataset(); dataset1.addValue(23.0, "R3", "C1"); dataset1.addValue(24.0, "R4", "C1"); dataset1.addValue(25.0, "R5", "C1"); LevelRenderer r = new LevelRenderer(); CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"), new NumberAxis("y"), r); plot.setDataset(1, dataset1); /*JFreeChart chart =*/ new JFreeChart(plot); LegendItem li = r.getLegendItem(1, 2); assertEquals("R5", li.getLabel()); assertEquals(1, li.getDatasetIndex()); assertEquals(2, li.getSeriesIndex()); } } Other jfreechart examples (source code examples)Here is a short list of links related to this jfreechart LevelRendererTests.java source code file: |
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