pieplottests.java

JFreeChart是做统计图表的,、混合图、甘特图以及一些仪表盘

        plot1.setLabelGap(0.11);
        assertFalse(plot1.equals(plot2));
        plot2.setLabelGap(0.11);
        assertTrue(plot1.equals(plot2));
        
        // links visible
        plot1.setLabelLinksVisible(false);
        assertFalse(plot1.equals(plot2));
        plot2.setLabelLinksVisible(false);
        assertTrue(plot1.equals(plot2));
        
        // linkMargin
        plot1.setLabelLinkMargin(0.11);
        assertFalse(plot1.equals(plot2));
        plot2.setLabelLinkMargin(0.11);
        assertTrue(plot1.equals(plot2));

        // labelLinkPaint
        plot1.setLabelLinkPaint(new GradientPaint(1.0f, 2.0f, Color.magenta, 
                3.0f, 4.0f, Color.white));
        assertFalse(plot1.equals(plot2));
        plot2.setLabelLinkPaint(new GradientPaint(1.0f, 2.0f, Color.magenta, 
                3.0f, 4.0f, Color.white));
        assertTrue(plot1.equals(plot2));
       
        // labelLinkStroke
        plot1.setLabelLinkStroke(new BasicStroke(1.0f));
        assertFalse(plot1.equals(plot2));
        plot2.setLabelLinkStroke(new BasicStroke(1.0f));
        assertTrue(plot1.equals(plot2));
       
        // toolTipGenerator
        plot1.setToolTipGenerator(
            new StandardPieToolTipGenerator("{2}{1}{0}")
        );
        assertFalse(plot1.equals(plot2));
        plot2.setToolTipGenerator(
            new StandardPieToolTipGenerator("{2}{1}{0}")
        );
        assertTrue(plot1.equals(plot2));
        
        // urlGenerator
        plot1.setURLGenerator(new StandardPieURLGenerator("xx"));
        assertFalse(plot1.equals(plot2));
        plot2.setURLGenerator(new StandardPieURLGenerator("xx"));
        assertTrue(plot1.equals(plot2));
        
        // minimumArcAngleToDraw
        plot1.setMinimumArcAngleToDraw(1.0);
        assertFalse(plot1.equals(plot2));
        plot2.setMinimumArcAngleToDraw(1.0);  
        assertTrue(plot1.equals(plot2));
        
        // legendItemShape
        plot1.setLegendItemShape(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertFalse(plot1.equals(plot2));
        plot2.setLegendItemShape(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
        assertTrue(plot1.equals(plot2));
        
        // legendLabelGenerator
        plot1.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(
                "{0} --> {1}"));
        assertFalse(plot1.equals(plot2));
        plot2.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(
                "{0} --> {1}"));
        assertTrue(plot1.equals(plot2));
        
        // legendLabelToolTipGenerator
        plot1.setLegendLabelToolTipGenerator(
                new StandardPieSectionLabelGenerator("{0} is {1}"));
        assertFalse(plot1.equals(plot2));
        plot2.setLegendLabelToolTipGenerator(
                new StandardPieSectionLabelGenerator("{0} is {1}"));
        assertTrue(plot1.equals(plot2));
        
        // legendLabelURLGenerator
        plot1.setLegendLabelURLGenerator(new StandardPieURLGenerator(
                "index.html"));
        assertFalse(plot1.equals(plot2));
        plot2.setLegendLabelURLGenerator(new StandardPieURLGenerator(
                "index.html"));
        assertTrue(plot1.equals(plot2));
        
    }

    /**
     * Some basic checks for the clone() method.
     */
    public void testCloning() {
        PiePlot p1 = new PiePlot();
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
    }
    
    /**
     * Check cloning of the urlGenerator field.
     */
    public void testCloning_URLGenerator() {
        CustomPieURLGenerator generator = new CustomPieURLGenerator();
        PiePlot p1 = new PiePlot();
        p1.setURLGenerator(generator);
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // check that the URL generator has been cloned
        assertTrue(p1.getURLGenerator() != p2.getURLGenerator());
    }    

    /**
     * Check cloning of the legendItemShape field.
     */
    public void testCloning_LegendItemShape() {
        Rectangle shape = new Rectangle(-4, -4, 8, 8);
        PiePlot p1 = new PiePlot();
        p1.setLegendItemShape(shape);
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // change the shape and make sure it only affects p1
        shape.setRect(1.0, 2.0, 3.0, 4.0);
        assertFalse(p1.equals(p2));
    }    

    /**
     * Check cloning of the legendLabelGenerator field.
     */
    public void testCloning_LegendLabelGenerator() {
        StandardPieSectionLabelGenerator generator 
                = new StandardPieSectionLabelGenerator();
        PiePlot p1 = new PiePlot();
        p1.setLegendLabelGenerator(generator);
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // change the generator and make sure it only affects p1
        generator.getNumberFormat().setMinimumFractionDigits(2);
        assertFalse(p1.equals(p2));
    }    

    /**
     * Check cloning of the legendLabelToolTipGenerator field.
     */
    public void testCloning_LegendLabelToolTipGenerator() {
        StandardPieSectionLabelGenerator generator 
                = new StandardPieSectionLabelGenerator();
        PiePlot p1 = new PiePlot();
        p1.setLegendLabelToolTipGenerator(generator);
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // change the generator and make sure it only affects p1
        generator.getNumberFormat().setMinimumFractionDigits(2);
        assertFalse(p1.equals(p2));
    }    

    /**
     * Check cloning of the legendLabelURLGenerator field.
     */
    public void testCloning_LegendLabelURLGenerator() {
        CustomPieURLGenerator generator = new CustomPieURLGenerator();
        PiePlot p1 = new PiePlot();
        p1.setLegendLabelURLGenerator(generator);
        PiePlot p2 = null;
        try {
            p2 = (PiePlot) p1.clone();
        }
        catch (CloneNotSupportedException e) {
            e.printStackTrace();
        }
        assertTrue(p1 != p2);
        assertTrue(p1.getClass() == p2.getClass());
        assertTrue(p1.equals(p2));
        
        // check that the URL generator has been cloned
        assertTrue(p1.getLegendLabelURLGenerator() 
                != p2.getLegendLabelURLGenerator());
    }    

    /**
     * Serialize an instance, restore it, and check for equality.
     */
    public void testSerialization() {
        PiePlot p1 = new PiePlot(null);
        PiePlot p2 = null;
        try {
            ByteArrayOutputStream buffer = new ByteArrayOutputStream();
            ObjectOutput out = new ObjectOutputStream(buffer);
            out.writeObject(p1);
            out.close();

            ObjectInput in = new ObjectInputStream(new ByteArrayInputStream(
                    buffer.toByteArray()));
            p2 = (PiePlot) in.readObject();
            in.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        assertEquals(p1, p2);
    }

    /**
     * Some checks for the getLegendItems() method.
     */
    public void testGetLegendItems() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("Item 1", 1.0);
        dataset.setValue("Item 2", 2.0);
        dataset.setValue("Item 3", 0.0);
        dataset.setValue("Item 4", null);
       
        PiePlot plot = new PiePlot(dataset);
        plot.setIgnoreNullValues(false);
        plot.setIgnoreZeroValues(false);
        LegendItemCollection items = plot.getLegendItems();
        assertEquals(4, items.getItemCount());
        
        // check that null items are ignored if requested
        plot.setIgnoreNullValues(true);
        items = plot.getLegendItems();
        assertEquals(3, items.getItemCount());
        
        // check that zero items are ignored if requested
        plot.setIgnoreZeroValues(true);
        items = plot.getLegendItems();
        assertEquals(2, items.getItemCount());
        
        // check that negative items are always ignored
        dataset.setValue("Item 5", -1.0);
        items = plot.getLegendItems();
        assertEquals(2, items.getItemCount());        
    }
    
    /**
     * Check that the default base section paint is not null, and that you 
     * can never set it to null.
     */
    public void testGetBaseSectionPaint() {
        PiePlot plot = new PiePlot();
        assertNotNull(plot.getBaseSectionPaint());
        
        boolean pass = false;
        try {
            plot.setBaseSectionPaint(null);
        }
        catch (IllegalArgumentException e) {
            pass = true;
        }
        assertTrue(pass);
    }
    
    static class NullLegendLabelGenerator implements PieSectionLabelGenerator {
        public AttributedString generateAttributedSectionLabel(
                PieDataset dataset, Comparable key) {
            return null;
        }
        public String generateSectionLabel(PieDataset dataset, Comparable key) {
            return null;
        }
    }
    
    /**
     * Draws a pie chart where the label generator returns null.
     */
    public void testDrawWithNullLegendLabels() {
        DefaultPieDataset dataset = new DefaultPieDataset();
        dataset.setValue("L1", 12.0);
        dataset.setValue("L2", 11.0);
        JFreeChart chart = ChartFactory.createPieChart("Test", dataset, true, 
                false, false);
        PiePlot plot = (PiePlot) chart.getPlot();
        plot.setLegendLabelGenerator(new NullLegendLabelGenerator());
        boolean success = false;
        try {
            BufferedImage image = new BufferedImage(200 , 100, 
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g2 = image.createGraphics();
            chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null, null);
            g2.dispose();
            success = true;
        }
        catch (Exception e) {
          success = false;
        }
        assertTrue(success);
    }
    
}