/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.mahout.cf.taste.impl.model;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.apache.mahout.cf.taste.impl.TasteTestCase;
import org.junit.Test;
/**
* Tests {@link GenericDataModel}.
*/
public final class GenericDataModelTest extends TasteTestCase {
@Test
public void testSerialization() throws Exception {
GenericDataModel model = (GenericDataModel) getDataModel();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject(model);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ObjectInputStream in = new ObjectInputStream(bais);
GenericDataModel newModel = (GenericDataModel) in.readObject();
assertEquals(model.getNumItems(), newModel.getNumItems());
assertEquals(model.getNumUsers(), newModel.getNumUsers());
assertEquals(model.getPreferencesFromUser(1L), newModel.getPreferencesFromUser(1L));
assertEquals(model.getPreferencesForItem(1L), newModel.getPreferencesForItem(1L));
assertEquals(model.getRawUserData(), newModel.getRawUserData());
}
// Lots of other stuff should be tested but is kind of covered by FileDataModelTest
}