/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Copyright (C) 2002 University of Waikato
*/
package weka.filters.unsupervised.attribute;
import weka.core.Attribute;
import weka.core.Instance;
import weka.core.Instances;
import weka.core.TestInstances;
import weka.filters.AbstractFilterTest;
import weka.filters.Filter;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests FirstOrder. Run from the command line with:<p>
* java weka.filters.unsupervised.attribute.FirstOrderTest
*
* @author <a href="mailto:len@reeltwo.com">Len Trigg</a>
* @version $Revision: 1.4 $
*/
public class FirstOrderTest extends AbstractFilterTest {
private static double EXPR_DELTA = 0.001;
public FirstOrderTest(String name) { super(name); }
/** Creates a default FirstOrder */
public Filter getFilter() {
return getFilter("6,3");
}
/** Creates a specialized FirstOrder */
public Filter getFilter(String rangelist) {
try {
FirstOrder af = new FirstOrder();
af.setAttributeIndices(rangelist);
return af;
} catch (Exception ex) {
ex.printStackTrace();
fail("Exception setting attribute range: " + rangelist
+ "\n" + ex.getMessage());
}
return null;
}
/**
* returns data generated for the FilteredClassifier test
*
* @return the dataset for the FilteredClassifier
* @throws Exception if generation of data fails
*/
protected Instances getFilteredClassifierData() throws Exception{
TestInstances test;
Instances result;
test = new TestInstances();
test.setNumNominal(0);
test.setNumNumeric(6);
test.setClassType(Attribute.NOMINAL);
test.setClassIndex(TestInstances.CLASS_IS_LAST);
result = test.generate();
return result;
}
public void testTypical() {
m_Filter = getFilter("6,3");
Instances result = useFilter();
assertEquals(m_Instances.numAttributes() - 1, result.numAttributes());
for (int i = 0; i < result.numInstances(); i++) {
Instance orig = m_Instances.instance(i);
if (orig.isMissing(5) || orig.isMissing(2)) {
assertTrue("Instance " + (i + 1) + " should have been ?" ,
result.instance(i).isMissing(4));
} else {
assertEquals(orig.value(5) - orig.value(2),
result.instance(i).value(4),
EXPR_DELTA);
}
}
}
public void testTypical2() {
m_Filter = getFilter("3,6");
Instances result = useFilter();
assertEquals(m_Instances.numAttributes() - 1, result.numAttributes());
for (int i = 0; i < result.numInstances(); i++) {
Instance orig = m_Instances.instance(i);
if (orig.isMissing(5) || orig.isMissing(2)) {
assertTrue("Instance " + (i + 1) + " should have been ?" ,
result.instance(i).isMissing(4));
} else {
assertEquals(orig.value(5) - orig.value(2),
result.instance(i).value(4),
EXPR_DELTA);
}
}
}
public static Test suite() {
return new TestSuite(FirstOrderTest.class);
}
public static void main(String[] args){
junit.textui.TestRunner.run(suite());
}
}