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Unit tests for previous commit - from Brent Worden's submission in Bugzilla Issue 20279 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@140862 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tim O'Brien 2003-05-29 19:35:56 +00:00
parent 703fbafa34
commit 3cb56af4e4
3 changed files with 393 additions and 0 deletions
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129
src/test/org/apache/commons/math/distribution/ChiSquareDistributionTest.java Normal file
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.math.stat.distribution;
import junit.framework.TestCase;
/**
* @author Brent Worden
*/
public class ChiSquareDistributionTest extends TestCase {
private ChiSquaredDistribution chiSquare;
/**
* Constructor for ChiSquareDistributionTest.
* @param name
*/
public ChiSquareDistributionTest(String name) {
super(name);
}
/*
* @see TestCase#setUp()
*/
protected void setUp() throws Exception {
super.setUp();
chiSquare = DistributionFactory.newInstance().createChiSquareDistribution(5.0);
}
/*
* @see TestCase#tearDown()
*/
protected void tearDown() throws Exception {
chiSquare = null;
super.tearDown();
}
public void testLowerTailProbability(){
testProbability( .210, .001);
testProbability( .554, .010);
testProbability( .831, .025);
testProbability(1.145, .050);
testProbability(1.610, .100);
}
public void testUpperTailProbability(){
testProbability(20.515, .999);
testProbability(15.086, .990);
testProbability(12.833, .975);
testProbability(11.070, .950);
testProbability( 9.236, .900);
}
public void testLowerTailValues(){
testValue(.001, .210);
testValue(.010, .554);
testValue(.025, .831);
testValue(.050, 1.145);
testValue(.100, 1.610);
}
public void testUpperTailValues(){
testValue(.999, 20.515);
testValue(.990, 15.086);
testValue(.975, 12.833);
testValue(.950, 11.070);
testValue(.900, 9.236);
}
private void testProbability(double x, double expected){
double actual = chiSquare.cummulativeProbability(x);
assertEquals("probability for " + x, expected, actual, 10e-4);
}
private void testValue(double p, double expected){
double actual = chiSquare.inverseCummulativeProbability(p);
assertEquals("value for " + p, expected, actual, 10e-4);
}
}

183
src/test/org/apache/commons/math/distribution/DistributionFactoryImplTest.java Normal file
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.math.stat.distribution;
import junit.framework.TestCase;
/**
* @author Brent Worden
*/
public class DistributionFactoryImplTest extends TestCase {
/** */
private DistributionFactory factory;
/**
* Constructor for DistributionFactoryImplTest.
* @param name
*/
public DistributionFactoryImplTest(String name) {
super(name);
}
/**
* @throws java.lang.Exception
*/
protected void setUp() throws Exception {
super.setUp();
factory = new DistributionFactoryImpl();
}
/**
* @throws java.lang.Exception
*/
protected void tearDown() throws Exception {
factory = null;
super.tearDown();
}
public void testCreateChiSquareDistributionNegative(){
try {
factory.createChiSquareDistribution(-1.0);
fail("negative degrees of freedom. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateChiSquareDistributionZero(){
try {
factory.createChiSquareDistribution(0.0);
fail("zero degrees of freedom. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateChiSquareDistributionPositive(){
try {
factory.createChiSquareDistribution(1.0);
} catch (IllegalArgumentException ex) {
fail("positive degrees of freedom. IllegalArgumentException is not expected");
}
}
public void testCreateGammaDistributionNegativePositive(){
try {
factory.createGammaDistribution(-1.0, 1.0);
fail("negative alpha. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateGammaDistributionZeroPositive(){
try {
factory.createGammaDistribution(0.0, 1.0);
fail("zero alpha. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateGammaDistributionPositiveNegative(){
try {
factory.createGammaDistribution(1.0, -1.0);
fail("negative beta. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateGammaDistributionPositiveZero(){
try {
factory.createGammaDistribution(1.0, 0.0);
fail("zero beta. IllegalArgumentException expected");
} catch (IllegalArgumentException ex) {
;
}
}
public void testCreateGammaDistributionPositivePositive(){
try {
factory.createGammaDistribution(1.0, 1.0);
} catch (IllegalArgumentException ex) {
fail("positive alpah and beta. IllegalArgumentException is not expected");
}
}
//
// public void testCreateTDistributionNegative(){
// try {
// factory.createTDistribution(-1.0);
// fail("negative degrees of freedom. IllegalArgumentException expected");
// } catch (IllegalArgumentException ex) {
// ;
// }
// }
//
// public void testCreateTDistributionZero(){
// try {
// factory.createTDistribution(0.0);
// fail("zero degrees of freedom. IllegalArgumentException expected");
// } catch (IllegalArgumentException ex) {
// ;
// }
// }
//
// public void testCreateTDistributionPositive(){
// try {
// factory.createTDistribution(1.0);
// } catch (IllegalArgumentException ex) {
// fail("positive degrees of freedom. IllegalArgumentException is not expected");
// }
// }
}

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src/test/org/apache/commons/math/distribution/GammaDistributionTest.java Normal file
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.commons.math.stat.distribution;
import junit.framework.TestCase;
/**
* @author Brent Worden
*/
public class GammaDistributionTest extends TestCase {
/**
* Constructor for ChiSquareDistributionTest.
* @param name
*/
public GammaDistributionTest(String name) {
super(name);
}
public void testProbabilities(){
testProbability(15.5, 4.0, 2.0, .9499);
testProbability( 0.5, 4.0, 1.0, .0018);
testProbability(10.0, 1.0, 2.0, .9933);
testProbability( 5.0, 2.0, 2.0, .7127);
}
private void testProbability(double x, double a, double b, double expected){
double actual = DistributionFactory.newInstance().createGammaDistribution(a, b).cummulativeProbability(x);
assertEquals("probability for " + x, expected, actual, 10e-4);
}
}