/*
* 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) 2005 University of Waikato, Hamilton, New Zealand
*/
package weka.filters.unsupervised.attribute;
import weka.core.InstanceComparator;
import weka.core.Instances;
import weka.core.SparseInstance;
import weka.filters.AbstractFilterTest;
import weka.filters.Filter;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests ChangeDateFormat. Run from the command line with: <p/>
* java weka.filters.unsupervised.attribute.ChangeDateFormatTest
*
* @author FracPete (fracpete at waikato dot ac dot nz)
* @version $Revision: 1.2 $
*/
public class ChangeDateFormatTest
extends AbstractFilterTest {
/** for comparing the instances */
protected InstanceComparator m_Comparator;
public ChangeDateFormatTest(String name) {
super(name);
}
/** Need to set class index */
protected void setUp() throws Exception {
super.setUp();
m_Instances.setClassIndex(1);
m_Comparator = new InstanceComparator(true);
}
/** Creates a default ChangeDateFormat */
public Filter getFilter() {
ChangeDateFormat f = new ChangeDateFormat();
return f;
}
/**
* format must be different in precision (e.g., yyyy-MM instead of
* yyyy-MM-dd) from the one in "weka.filters.data.FilterTest.arff", otherwise
* this test will fail!
* Note: Sparse instances are skipped.
*/
public void testTypical() {
m_Filter = getFilter();
((ChangeDateFormat) m_Filter).setDateFormat("yyyy-MM");
Instances result = useFilter();
assertEquals(m_Instances.numAttributes(), result.numAttributes());
assertEquals(m_Instances.numInstances(), result.numInstances());
// all instance's must be different
boolean equal = false;
for (int i = 0; i < m_Instances.numInstances(); i++) {
if (m_Instances.instance(i) instanceof SparseInstance)
continue;
if (m_Comparator.compare(
m_Instances.instance(i), result.instance(i)) == 0) {
equal = true;
break;
}
}
if (equal)
fail("Instances not changed!");
}
/**
* format must be the same as in "weka.filters.data.FilterTest.arff",
* otherwise this test will fail!
* Note: Sparse instances are skipped.
*/
public void testSameFormat() {
m_Filter = getFilter();
((ChangeDateFormat) m_Filter).setDateFormat("yyyy-MM-dd");
Instances result = useFilter();
assertEquals(m_Instances.numAttributes(), result.numAttributes());
assertEquals(m_Instances.numInstances(), result.numInstances());
// all instance's must be the same
boolean equal = true;
for (int i = 0; i < m_Instances.numInstances(); i++) {
if (m_Instances.instance(i) instanceof SparseInstance)
continue;
if (m_Comparator.compare(
m_Instances.instance(i), result.instance(i)) != 0) {
equal = false;
break;
}
}
if (!equal)
fail("Instances modified!");
}
/**
* tests the filter in conjunction with the FilteredClassifier
*/
public void testFilteredClassifier() {
try {
Instances data = getFilteredClassifierData();
for (int i = 0; i < data.numAttributes(); i++) {
if (data.classIndex() == i)
continue;
if (data.attribute(i).isDate()) {
((ChangeDateFormat) m_FilteredClassifier.getFilter()).setAttributeIndex(
"" + (i + 1));
break;
}
}
}
catch (Exception e) {
fail("Problem setting up test for FilteredClassifier: " + e.toString());
}
super.testFilteredClassifier();
}
public static Test suite() {
return new TestSuite(ChangeDateFormatTest.class);
}
public static void main(String[] args){
junit.textui.TestRunner.run(suite());
}
}