psteitz 2004/06/29 08:40:07
Modified: math/src/test/org/apache/commons/math/stat/univariate/summary
SumSqTest.java
Log:
Added tests for NaN, infinite values, n=0,1.
Revision Changes Path
1.12 +18 -2
jakarta-commons/math/src/test/org/apache/commons/math/stat/univariate/summary/SumSqTest.java
Index: SumSqTest.java
===================================================================
RCS file:
/home/cvs/jakarta-commons/math/src/test/org/apache/commons/math/stat/univariate/summary/SumSqTest.java,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -r1.11 -r1.12
--- SumSqTest.java 17 Jun 2004 21:37:05 -0000 1.11
+++ SumSqTest.java 29 Jun 2004 15:40:07 -0000 1.12
@@ -22,7 +22,8 @@
import org.apache.commons.math.stat.univariate.UnivariateStatistic;
/**
- * Test cases for the [EMAIL PROTECTED] UnivariateStatistic} class.
+ * Test cases for the [EMAIL PROTECTED] SumOfSquares} class.
+ *
* @version $Revision$ $Date$
*/
public class SumSqTest extends StorelessUnivariateStatisticAbstractTest{
@@ -54,6 +55,21 @@
*/
public double expectedValue() {
return this.sumSq;
+ }
+
+ public void testSpecialValues() {
+ SumOfSquares sumSq = new SumOfSquares();
+ assertTrue(Double.isNaN(sumSq.getResult()));
+ sumSq.increment(2d);
+ assertEquals(4d, sumSq.getResult(), 0);
+ sumSq.increment(Double.POSITIVE_INFINITY);
+ assertEquals(Double.POSITIVE_INFINITY, sumSq.getResult(), 0);
+ sumSq.increment(Double.NEGATIVE_INFINITY);
+ assertEquals(Double.POSITIVE_INFINITY, sumSq.getResult(), 0);
+ sumSq.increment(Double.NaN);
+ assertTrue(Double.isNaN(sumSq.getResult()));
+ sumSq.increment(1);
+ assertTrue(Double.isNaN(sumSq.getResult()));
}
}
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