/*
* LensKit, an open source recommender systems toolkit.
* Copyright 2010-2014 LensKit Contributors. See CONTRIBUTORS.md.
* Work on LensKit has been funded by the National Science Foundation under
* grants IIS 05-34939, 08-08692, 08-12148, and 10-17697.
*
* This program 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 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., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.grouplens.lenskit.util;
import org.grouplens.lenskit.vectors.MutableSparseVector;
import org.junit.Test;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;
/**
*
* @author <a href="http://www.grouplens.org">GroupLens Research</a>
*
*/
@SuppressWarnings("deprecation")
public class IndexerTest {
@Test
public void testConvertArrayToVector(){
Indexer ind = new Indexer();
MutableSparseVector vector = MutableSparseVector.create();
double[] values = {1.0, 2.0, 3.0};
assertThat(ind.getObjectCount(), equalTo(0));
ind.internId(0);
ind.internId(1);
ind.internId(2);
assertThat(ind.getObjectCount(), equalTo(3));
vector = ind.convertArrayToVector(values);
assertThat(vector.get(0), equalTo(1.0));
assertThat(vector.get(1), equalTo(2.0));
assertThat(vector.get(2), equalTo(3.0));
}
}