1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ------------------
* LineChartTest.java
* ------------------
* (C) Copyright 2005-2013, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 12-Apr-2005 : Version 1 (DG);
*
*/
package org.jfree.chart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.ChartChangeEvent;
import org.jfree.chart.event.ChartChangeListener;
import org.jfree.chart.labels.CategoryToolTipGenerator;
import org.jfree.chart.labels.StandardCategoryToolTipGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.urls.CategoryURLGenerator;
import org.jfree.chart.urls.StandardCategoryURLGenerator;
import org.jfree.data.Range;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.junit.Before;
import org.junit.Test;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
/**
* Some tests for a line chart.
*/
public class LineChartTest {
/** A chart. */
private JFreeChart chart;
/**
* Common test setup.
*/
@Before
public void setUp() {
this.chart = createLineChart();
}
/**
* Draws the chart with a null info object to make sure that no exceptions
* are thrown (a problem that was occurring at one point).
*/
@Test
public void testDrawWithNullInfo() {
BufferedImage image = new BufferedImage(200 , 100,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = image.createGraphics();
this.chart.draw(g2, new Rectangle2D.Double(0, 0, 200, 100), null,
null);
g2.dispose();
//FIXME we should really assert a value here
}
/**
* Replaces the chart's dataset and then checks that the new dataset is OK.
*/
@Test
public void testReplaceDataset() {
// create a dataset...
Number[][] data = new Integer[][]
{{new Integer(-30), new Integer(-20)},
{new Integer(-10), new Integer(10)},
{new Integer(20), new Integer(30)}};
CategoryDataset newData = DatasetUtilities.createCategoryDataset("S",
"C", data);
LocalListener l = new LocalListener();
this.chart.addChangeListener(l);
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
plot.setDataset(newData);
assertEquals(true, l.flag);
ValueAxis axis = plot.getRangeAxis();
Range range = axis.getRange();
assertTrue("Expecting the lower bound of the range to be around -30: "
+ range.getLowerBound(), range.getLowerBound() <= -30);
assertTrue("Expecting the upper bound of the range to be around 30: "
+ range.getUpperBound(), range.getUpperBound() >= 30);
}
/**
* Check that setting a tool tip generator for a series does override the
* default generator.
*/
@Test
public void testSetSeriesToolTipGenerator() {
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
CategoryItemRenderer renderer = plot.getRenderer();
StandardCategoryToolTipGenerator tt
= new StandardCategoryToolTipGenerator();
renderer.setSeriesToolTipGenerator(0, tt);
CategoryToolTipGenerator tt2 = renderer.getToolTipGenerator(0, 0);
assertSame(tt2, tt);
}
/**
* Check that setting a URL generator for a series does override the
* default generator.
*/
@Test
public void testSetSeriesURLGenerator() {
CategoryPlot plot = (CategoryPlot) this.chart.getPlot();
CategoryItemRenderer renderer = plot.getRenderer();
StandardCategoryURLGenerator url1
= new StandardCategoryURLGenerator();
renderer.setSeriesItemURLGenerator(0, url1);
CategoryURLGenerator url2 = renderer.getItemURLGenerator(0, 0);
assertSame(url2, url1);
}
/**
* Create a line chart with sample data in the range -3 to +3.
*
* @return The chart.
*/
private static JFreeChart createLineChart() {
Number[][] data = new Integer[][]
{{new Integer(-3), new Integer(-2)},
{new Integer(-1), new Integer(1)},
{new Integer(2), new Integer(3)}};
CategoryDataset dataset = DatasetUtilities.createCategoryDataset("S",
"C", data);
return ChartFactory.createLineChart("Line Chart", "Domain", "Range",
dataset);
}
/**
* A chart change listener.
*
*/
static class LocalListener implements ChartChangeListener {
/** A flag. */
private boolean flag;
/**
* Event handler.
*
* @param event the event.
*/
@Override
public void chartChanged(ChartChangeEvent event) {
this.flag = true;
}
}
}
|
