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Added tests for special values.

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/math/trunk@141322 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Phil Steitz 2004-06-18 22:10:35 +00:00
parent 3a385a5aa0
commit 80af9ad497
1 changed files with 17 additions and 1 deletions
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18
src/test/org/apache/commons/math/stat/univariate/rank/MinTest.java
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@ -23,7 +23,7 @@ import org.apache.commons.math.stat.univariate.UnivariateStatistic;
/** /**
* Test cases for the {@link UnivariateStatistic} class. * Test cases for the {@link UnivariateStatistic} class.
* @version $Revision: 1.11 $ $Date: 2004/06/17 21:37:05 $ * @version $Revision: 1.12 $ $Date: 2004/06/18 22:10:35 $
*/ */
public class MinTest extends StorelessUnivariateStatisticAbstractTest{ public class MinTest extends StorelessUnivariateStatisticAbstractTest{
@ -56,4 +56,20 @@ public class MinTest extends StorelessUnivariateStatisticAbstractTest{
return this.min; return this.min;
} }
public void testSpecialValues() {
double[] testArray = {0d, Double.NaN, Double.POSITIVE_INFINITY,
Double.NEGATIVE_INFINITY};
Min min = new Min();
assertTrue(Double.isNaN(min.getResult()));
min.increment(testArray[0]);
assertEquals(0d, min.getResult(), 0);
min.increment(testArray[1]);
assertEquals(0d, min.getResult(), 0);
min.increment(testArray[2]);
assertEquals(0d, min.getResult(), 0);
min.increment(testArray[3]);
assertEquals(Double.NEGATIVE_INFINITY, min.getResult(), 0);
assertEquals(Double.NEGATIVE_INFINITY, min.evaluate(testArray), 0);
}
} }