/**
* 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 org.apache.mahout.cf.taste.impl.TasteTestCase;
import org.apache.mahout.cf.taste.model.IDMigrator;
import java.util.Collections;
import org.apache.mahout.cf.taste.model.UpdatableIDMigrator;
import org.junit.Test;
public final class MemoryIDMigratorTest extends TasteTestCase {
private static final String DUMMY_STRING = "Mahout";
private static final long DUMMY_ID = -6311185995763544451L;
@Test
public void testToLong() {
IDMigrator migrator = new MemoryIDMigrator();
long id = migrator.toLongID(DUMMY_STRING);
assertEquals(DUMMY_ID, id);
}
@Test
public void testStore() throws Exception {
UpdatableIDMigrator migrator = new MemoryIDMigrator();
long id = migrator.toLongID(DUMMY_STRING);
assertNull(migrator.toStringID(id));
migrator.storeMapping(id, DUMMY_STRING);
assertEquals(DUMMY_STRING, migrator.toStringID(id));
}
@Test
public void testInitialize() throws Exception {
UpdatableIDMigrator migrator = new MemoryIDMigrator();
long id = migrator.toLongID(DUMMY_STRING);
assertNull(migrator.toStringID(id));
migrator.initialize(Collections.singleton(DUMMY_STRING));
assertEquals(DUMMY_STRING, migrator.toStringID(id));
}
}