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;
018
019 import junit.framework.Test;
020 import junit.framework.TestCase;
021 import junit.framework.TestSuite;
022
023 import org.apache.commons.math.stat.descriptive.moment.Mean;
024
025 /**
026 * Tests for AbstractUnivariateStatistic
027 *
028 * @version $Revision: 670469 $ $Date: 2008-06-23 04:01:38 -0400 (Mon, 23 Jun 2008) $
029 */
030 public class AbstractUnivariateStatisticTest extends TestCase {
031
032 public AbstractUnivariateStatisticTest(String name) {
033 super(name);
034 }
035
036 public static Test suite() {
037 TestSuite suite = new TestSuite(AbstractUnivariateStatisticTest.class);
038 suite.setName("AbstractUnivariateStatistic Tests");
039 return suite;
040 }
041
042 protected double[] testArray = {0, 1, 2, 3, 4, 5};
043 protected double[] nullArray = null;
044 protected double[] singletonArray = {0};
045 protected Mean testStatistic = new Mean();
046
047 public void testTestPositive() {
048 for (int j = 0; j < 6; j++) {
049 for (int i = 1; i < (7 - j); i++) {
050 assertTrue(testStatistic.test(testArray, 0, i));
051 }
052 }
053 assertTrue(testStatistic.test(singletonArray, 0, 1));
054 }
055
056 public void testTestNegative() {
057 assertFalse(testStatistic.test(singletonArray, 0, 0));
058 assertFalse(testStatistic.test(testArray, 0, 0));
059 try {
060 testStatistic.test(singletonArray, 2, 1); // start past end
061 fail("Expecting IllegalArgumentException");
062 } catch (IllegalArgumentException ex) {
063 // expected
064 }
065 try {
066 testStatistic.test(testArray, 0, 7); // end past end
067 fail("Expecting IllegalArgumentException");
068 } catch (IllegalArgumentException ex) {
069 // expected
070 }
071 try {
072 testStatistic.test(testArray, -1, 1); // start negative
073 fail("Expecting IllegalArgumentException");
074 } catch (IllegalArgumentException ex) {
075 // expected
076 }
077 try {
078 testStatistic.test(testArray, 0, -1); // length negative
079 fail("Expecting IllegalArgumentException");
080 } catch (IllegalArgumentException ex) {
081 // expected
082 }
083 try {
084 testStatistic.test(nullArray, 0, 1); // null array
085 fail("Expecting IllegalArgumentException");
086 } catch (IllegalArgumentException ex) {
087 // expected
088 }
089 }
090 }