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Java > Open Source Codes > org > apache > commons > math > stat > descriptive > AbstractUnivariateStatisticTest


1 /*
2  *
3  * Copyright (c) 2004 The Apache Software Foundation. All rights reserved.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
6  * use this file except in compliance with the License. You may obtain a copy
7  * of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
13  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
14  * License for the specific language governing permissions and limitations
15  * under the License.
16  *
17  */
18 package org.apache.commons.math.stat.descriptive;
19
20 import junit.framework.Test;
21 import junit.framework.TestCase;
22 import junit.framework.TestSuite;
23
24 import org.apache.commons.math.stat.descriptive.moment.Mean;
25
26 /**
27  * Tests for AbstractUnivariateStatistic
28  *
29  * @version $Revision$ $Date: 2005-02-26 05:11:52 -0800 (Sat, 26 Feb 2005) $
30  */
31 public class AbstractUnivariateStatisticTest extends TestCase {
32     
33     public AbstractUnivariateStatisticTest(String JavaDoc name) {
34         super(name);
35     }
36     
37     public static Test suite() {
38         TestSuite suite = new TestSuite(AbstractUnivariateStatisticTest.class);
39         suite.setName("AbstractUnivariateStatistic Tests");
40         return suite;
41     }
42     
43     protected double[] testArray = {0, 1, 2, 3, 4, 5};
44     protected double[] nullArray = null;
45     protected double[] singletonArray = {0};
46     protected Mean testStatistic = new Mean();
47     
48     public void testTestPositive() {
49         for (int j = 0; j < 6; j++) {
50             for (int i = 1; i < (7 - j); i++) {
51                 assertTrue(testStatistic.test(testArray, 0, i));
52             }
53         }
54         assertTrue(testStatistic.test(singletonArray, 0, 1));
55     }
56     
57     public void testTestNegative() {
58         assertFalse(testStatistic.test(singletonArray, 0, 0));
59         assertFalse(testStatistic.test(testArray, 0, 0));
60         try {
61             testStatistic.test(singletonArray, 2, 1); // start past end
62 fail("Expecting IllegalArgumentException");
63         } catch (IllegalArgumentException JavaDoc ex) {
64             // expected
65 }
66         try {
67             testStatistic.test(testArray, 0, 7); // end past end
68 fail("Expecting IllegalArgumentException");
69         } catch (IllegalArgumentException JavaDoc ex) {
70             // expected
71 }
72         try {
73             testStatistic.test(testArray, -1, 1); // start negative
74 fail("Expecting IllegalArgumentException");
75         } catch (IllegalArgumentException JavaDoc ex) {
76             // expected
77 }
78         try {
79             testStatistic.test(testArray, 0, -1); // length negative
80 fail("Expecting IllegalArgumentException");
81         } catch (IllegalArgumentException JavaDoc ex) {
82             // expected
83 }
84         try {
85             testStatistic.test(nullArray, 0, 1); // null array
86 fail("Expecting IllegalArgumentException");
87         } catch (IllegalArgumentException JavaDoc ex) {
88             // expected
89 }
90     }
91 }
92
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