/**
* 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.transforms;
import org.junit.Test;
/** <p>Tests {@link CaseAmplification}.</p> */
public final class CaseAmplificationTest extends TransformTestCase {
@Test
public void testOneValue() {
assertEquals(2.0, new CaseAmplification(0.5).transformSimilarity(0, 0, 4.0), EPSILON);
assertEquals(-2.0, new CaseAmplification(0.5).transformSimilarity(0, 0, -4.0), EPSILON);
}
@Test
public void testRefresh() {
// Make sure this doesn't throw an exception
new CaseAmplification(1.0).refresh(null);
}
}