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Added small sample tests for 2nd+ order moments. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141349 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-06-29 06:11:22 +00:00
parent c9ac892c42
commit c1062adc04
1 changed files with 13 additions and 2 deletions
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15
src/test/org/apache/commons/math/stat/univariate/StorelessUnivariateStatisticAbstractTest.java
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@ -16,10 +16,11 @@
package org.apache.commons.math.stat.univariate;
import org.apache.commons.math.TestUtils;
import org.apache.commons.math.stat.univariate.moment.SecondMoment;
/**
* Test cases for the {@link UnivariateStatistic} class.
* @version $Revision: 1.13 $ $Date: 2004/06/17 22:33:23 $
* Test cases for {@link StorelessUnivariateStatistic} classes.
* @version $Revision: 1.14 $ $Date: 2004/06/29 06:11:22 $
*/
public abstract class StorelessUnivariateStatisticAbstractTest
extends UnivariateStatisticAbstractTest {
@ -125,5 +126,15 @@ public abstract class StorelessUnivariateStatisticAbstractTest
emptyHash, statistic.hashCode());
}
public void testMomentSmallSamples() {
UnivariateStatistic stat = getUnivariateStatistic();
if (stat instanceof SecondMoment) {
SecondMoment moment = (SecondMoment) getUnivariateStatistic();
assertTrue(Double.isNaN(moment.getResult()));
moment.increment(1d);
assertEquals(0d, moment.getResult(), 0);
}
}
}