/*
* 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.Instances;
import weka.filters.AbstractFilterTest;
import weka.filters.Filter;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests Remove. Run from the command line with:<p>
* java weka.filters.unsupervised.attribute.RemoveTest
*
* @author <a href="mailto:len@reeltwo.com">Len Trigg</a>
* @version $Revision: 1.4 $
*/
public class RemoveTest extends AbstractFilterTest {
public RemoveTest(String name) { super(name); }
/** Creates a default Remove */
public Filter getFilter() {
return getFilter("1-3");
}
/** Creates a specialized Remove */
public Filter getFilter(String rangelist) {
Remove af = new Remove();
af.setAttributeIndices(rangelist);
return af;
}
public void testTypical() {
m_Filter = getFilter("1,2");
((Remove)m_Filter).setInvertSelection(true);
Instances result = useFilter();
assertEquals(2, result.numAttributes());
assertEquals(m_Instances.attribute(0).name(), result.attribute(0).name());
assertEquals(m_Instances.attribute(1).name(), result.attribute(1).name());
}
public void testTypical2() {
m_Filter = getFilter("3-4");
((Remove)m_Filter).setInvertSelection(true);
Instances result = useFilter();
assertEquals(2, result.numAttributes());
assertEquals(m_Instances.attribute(2).name(), result.attribute(0).name());
assertEquals(m_Instances.attribute(3).name(), result.attribute(1).name());
}
public void testNonInverted() {
m_Filter = getFilter("1,2");
((Remove)m_Filter).setInvertSelection(false);
Instances result = useFilter();
assertEquals(m_Instances.numAttributes() - 2, result.numAttributes());
assertEquals(m_Instances.attribute(2).name(), result.attribute(0).name());
assertEquals(m_Instances.attribute(3).name(), result.attribute(1).name());
}
public void testNonInverted2() {
m_Filter = getFilter("first-3");
((Remove)m_Filter).setInvertSelection(false);
Instances result = useFilter();
assertEquals(m_Instances.numAttributes() - 3, result.numAttributes());
assertEquals(m_Instances.attribute(3).name(), result.attribute(0).name());
}
public static Test suite() {
return new TestSuite(RemoveTest.class);
}
public static void main(String[] args){
junit.textui.TestRunner.run(suite());
}
}