numberaxistests.java

java图形利器

        dataset.setValue(200.0, "Row 1", "Column 2");
        JFreeChart chart = ChartFactory.createBarChart(
            "Test", 
            "Categories",
            "Value",
            dataset,
            PlotOrientation.VERTICAL,
            false, 
            false,
            false
        );
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        assertEquals(axis.getLowerBound(), 0.0, EPSILON);    
        assertEquals(axis.getUpperBound(), 210.0, EPSILON);    
    }
    
    /**
     * A simple test for the auto-range calculation looking at a
     * NumberAxis used as the range axis for a CategoryPlot.  In this
     * case, the 'autoRangeIncludesZero' flag is set to false.
     */
    public void testAutoRange2() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.setValue(100.0, "Row 1", "Column 1");
        dataset.setValue(200.0, "Row 1", "Column 2");
        JFreeChart chart = ChartFactory.createLineChart("Test", "Categories",
                "Value", dataset, PlotOrientation.VERTICAL, false, false,
                false);
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        axis.setAutoRangeIncludesZero(false);
        assertEquals(axis.getLowerBound(), 95.0, EPSILON);    
        assertEquals(axis.getUpperBound(), 205.0, EPSILON);    
    }
    
    /**
     * A simple test for the auto-range calculation looking at a
     * NumberAxis used as the range axis for a CategoryPlot.  In this
     * case, the 'autoRangeIncludesZero' flag is set to false AND the
     * original dataset is replaced with a new dataset.
     */
    public void testAutoRange3() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.setValue(100.0, "Row 1", "Column 1");
        dataset.setValue(200.0, "Row 1", "Column 2");
        JFreeChart chart = ChartFactory.createLineChart("Test", "Categories",
                "Value", dataset, PlotOrientation.VERTICAL, false, false,
                false);
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        axis.setAutoRangeIncludesZero(false);
        assertEquals(axis.getLowerBound(), 95.0, EPSILON);    
        assertEquals(axis.getUpperBound(), 205.0, EPSILON);    
        
        // now replacing the dataset should update the axis range...
        DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
        dataset2.setValue(900.0, "Row 1", "Column 1");
        dataset2.setValue(1000.0, "Row 1", "Column 2");
        plot.setDataset(dataset2);
        assertEquals(axis.getLowerBound(), 895.0, EPSILON);    
        assertEquals(axis.getUpperBound(), 1005.0, EPSILON);    
    }
    
    /**
     * A check for the interaction between the 'autoRangeIncludesZero' flag
     * and the base setting in the BarRenderer.
     */
    public void testAutoRange4() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.setValue(100.0, "Row 1", "Column 1");
        dataset.setValue(200.0, "Row 1", "Column 2");
        JFreeChart chart = ChartFactory.createBarChart("Test", "Categories",
                "Value", dataset, PlotOrientation.VERTICAL, false, false,
                false);
        CategoryPlot plot = (CategoryPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        axis.setAutoRangeIncludesZero(false);
        BarRenderer br = (BarRenderer) plot.getRenderer();
        br.setIncludeBaseInRange(false);
        assertEquals(95.0, axis.getLowerBound(), EPSILON);    
        assertEquals(205.0, axis.getUpperBound(), EPSILON);    
        
        br.setIncludeBaseInRange(true);
        assertEquals(0.0, axis.getLowerBound(), EPSILON);    
        assertEquals(210.0, axis.getUpperBound(), EPSILON);    
        
        axis.setAutoRangeIncludesZero(true);
        assertEquals(0.0, axis.getLowerBound(), EPSILON);    
        assertEquals(210.0, axis.getUpperBound(), EPSILON);    
        
        br.setIncludeBaseInRange(true);
        assertEquals(0.0, axis.getLowerBound(), EPSILON);    
        assertEquals(210.0, axis.getUpperBound(), EPSILON);    

        // now replacing the dataset should update the axis range...
        DefaultCategoryDataset dataset2 = new DefaultCategoryDataset();
        dataset2.setValue(900.0, "Row 1", "Column 1");
        dataset2.setValue(1000.0, "Row 1", "Column 2");
        plot.setDataset(dataset2);
        assertEquals(0.0, axis.getLowerBound(), EPSILON);    
        assertEquals(1050.0, axis.getUpperBound(), EPSILON);
        
        br.setIncludeBaseInRange(false);
        assertEquals(0.0, axis.getLowerBound(), EPSILON);    
        assertEquals(1050.0, axis.getUpperBound(), EPSILON);
        
        axis.setAutoRangeIncludesZero(false);
        assertEquals(895.0, axis.getLowerBound(), EPSILON);    
        assertEquals(1005.0, axis.getUpperBound(), EPSILON);        
    }
    
    /**
     * Checks that the auto-range for the domain axis on an XYPlot is
     * working as expected.
     */
    public void testXYAutoRange1() {
        XYSeries series = new XYSeries("Series 1");
        series.add(1.0, 1.0);
        series.add(2.0, 2.0);
        series.add(3.0, 3.0);
        XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series);
        JFreeChart chart = ChartFactory.createScatterPlot(
            "Test", 
            "X",
            "Y",
            dataset,
            PlotOrientation.VERTICAL,
            false, 
            false,
            false
        );
        XYPlot plot = (XYPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getDomainAxis();
        axis.setAutoRangeIncludesZero(false);
        assertEquals(0.9, axis.getLowerBound(), EPSILON);    
        assertEquals(3.1, axis.getUpperBound(), EPSILON);    
    }
    
    /**
     * Checks that the auto-range for the range axis on an XYPlot is
     * working as expected.
     */
    public void testXYAutoRange2() {
        XYSeries series = new XYSeries("Series 1");
        series.add(1.0, 1.0);
        series.add(2.0, 2.0);
        series.add(3.0, 3.0);
        XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series);
        JFreeChart chart = ChartFactory.createScatterPlot(
            "Test", 
            "X",
            "Y",
            dataset,
            PlotOrientation.VERTICAL,
            false, 
            false,
            false
        );
        XYPlot plot = (XYPlot) chart.getPlot();
        NumberAxis axis = (NumberAxis) plot.getRangeAxis();
        axis.setAutoRangeIncludesZero(false);
        assertEquals(0.9, axis.getLowerBound(), EPSILON);    
        assertEquals(3.1, axis.getUpperBound(), EPSILON);    
    }
    
//    /**
//     * Some checks for the setRangeType() method.
//     */
//    public void testSetRangeType() {
//        
//        NumberAxis axis = new NumberAxis("X");
//        axis.setRangeType(RangeType.POSITIVE);
//        assertEquals(RangeType.POSITIVE, axis.getRangeType());
//        
//        // test a change to RangeType.POSITIVE
//        axis.setRangeType(RangeType.FULL);
//        axis.setRange(-5.0, 5.0);
//        axis.setRangeType(RangeType.POSITIVE);
//        assertEquals(new Range(0.0, 5.0), axis.getRange());
//        
//        axis.setRangeType(RangeType.FULL);
//        axis.setRange(-10.0, -5.0);
//        axis.setRangeType(RangeType.POSITIVE);
//        assertEquals(new Range(0.0, axis.getAutoRangeMinimumSize()), 
//                axis.getRange());
//
//        // test a change to RangeType.NEGATIVE
//        axis.setRangeType(RangeType.FULL);
//        axis.setRange(-5.0, 5.0);
//        axis.setRangeType(RangeType.NEGATIVE);
//        assertEquals(new Range(-5.0, 0.0), axis.getRange());        
//        
//        axis.setRangeType(RangeType.FULL);
//        axis.setRange(5.0, 10.0);
//        axis.setRangeType(RangeType.NEGATIVE);
//        assertEquals(new Range(-axis.getAutoRangeMinimumSize(), 0.0), 
//                axis.getRange());
//
//        // try null
//        boolean pass = false;
//        try {
//            axis.setRangeType(null);    
//        }
//        catch (IllegalArgumentException e) {
//            pass = true;
//        }
//        assertTrue(pass);
//    }
    
    /**
     * Some checks for the setLowerBound() method.
     */
    public void testSetLowerBound() {
        NumberAxis axis = new NumberAxis("X");
        axis.setRange(0.0, 10.0);
        axis.setLowerBound(5.0);
        assertEquals(5.0, axis.getLowerBound(), EPSILON);
        axis.setLowerBound(10.0);
        assertEquals(10.0, axis.getLowerBound(), EPSILON);
        assertEquals(11.0, axis.getUpperBound(), EPSILON);
        
        //axis.setRangeType(RangeType.POSITIVE);
        //axis.setLowerBound(-5.0);
        //assertEquals(0.0, axis.getLowerBound(), EPSILON);
    }

}