001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     * 
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.commons.math.stat.descriptive.moment;
018    
019    import org.apache.commons.math.stat.descriptive.StorelessUnivariateStatisticAbstractTest;
020    import org.apache.commons.math.stat.descriptive.UnivariateStatistic;
021    
022    /**
023     * Test cases for the {@link SecondMoment} class.
024     * @version $Revision: 762087 $ $Date: 2009-04-05 10:20:18 -0400 (Sun, 05 Apr 2009) $
025     */
026    public class SecondMomentTest extends StorelessUnivariateStatisticAbstractTest {
027    
028        /** descriptive statistic. */
029        protected SecondMoment stat;
030        
031        /**
032         * @param name
033         */
034        public SecondMomentTest(String name) {
035            super(name);
036        }
037        
038        /**
039         * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#getUnivariateStatistic()
040         */
041        @Override
042        public UnivariateStatistic getUnivariateStatistic() {
043            return new SecondMoment();
044        }
045    
046        /**
047         * @see org.apache.commons.math.stat.descriptive.UnivariateStatisticAbstractTest#expectedValue()
048         */
049        @Override
050        public double expectedValue() {
051            return this.secondMoment;
052        }
053    
054    }