package org.grouplens.lenskit.eval.data.traintest;

import org.grouplens.lenskit.data.dao.EventCollectionDAO;
import org.grouplens.lenskit.data.event.Rating;
import org.grouplens.lenskit.eval.data.GenericDataSource;
import org.junit.Test;

import java.util.Collections;
import java.util.List;

import static net.java.quickcheck.generator.CombinedGenerators.uniqueValues;
import static net.java.quickcheck.generator.CombinedGeneratorsIterables.someNonEmptyLists;
import static net.java.quickcheck.generator.PrimitiveGenerators.nonEmptyStrings;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

public class GenericTTDataBuilderTest {
    @Test
    public void testAttributeOrder() {
        for (List<String> strings: someNonEmptyLists(uniqueValues(nonEmptyStrings(), 10))) {
            GenericTTDataBuilder bld = new GenericTTDataBuilder(nonEmptyStrings().next());
            bld.setTrain(new GenericDataSource("train", EventCollectionDAO.create(Collections.<Rating>emptyList())));
            bld.setTest(new GenericDataSource("test", EventCollectionDAO.create(Collections.<Rating>emptyList())));
            for (String str: strings) {
                bld.setAttribute(str, nonEmptyStrings().next());
            }
            TTDataSet ds = bld.build();
            assertThat(ds.getAttributes().size(), equalTo(strings.size()));
            assertThat(ds.getAttributes().keySet(), contains(strings.toArray()));
        }
    }
}

/*
 * 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.eval.data.traintest;

import org.grouplens.lenskit.data.dao.EventCollectionDAO;
import org.grouplens.lenskit.data.event.Rating;
import org.grouplens.lenskit.eval.data.GenericDataSource;
import org.junit.Test;

import java.util.Collections;
import java.util.List;

import static net.java.quickcheck.generator.CombinedGenerators.uniqueValues;
import static net.java.quickcheck.generator.CombinedGeneratorsIterables.someNonEmptyLists;
import static net.java.quickcheck.generator.PrimitiveGenerators.nonEmptyStrings;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

public class GenericTTDataBuilderTest {
    @Test
    public void testAttributeOrder() {
        for (List<String> strings: someNonEmptyLists(uniqueValues(nonEmptyStrings(), 10))) {
            GenericTTDataBuilder bld = new GenericTTDataBuilder(nonEmptyStrings().next());
            bld.setTrain(new GenericDataSource("train", EventCollectionDAO.create(Collections.<Rating>emptyList())));
            bld.setTest(new GenericDataSource("test", EventCollectionDAO.create(Collections.<Rating>emptyList())));
            for (String str: strings) {
                bld.setAttribute(str, nonEmptyStrings().next());
            }
            TTDataSet ds = bld.build();
            assertThat(ds.getAttributes().size(), equalTo(strings.size()));
            assertThat(ds.getAttributes().keySet(), contains(strings.toArray()));
        }
    }
}

Add missing license header