svn commit: r1231133 - /commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java

[erans]

Author: erans
Date: Fri Jan 13 15:33:34 2012
New Revision: 1231133

URL: http://svn.apache.org/viewvc?rev=1231133&view=rev
Log:
Added a test.

Modified:
    
commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java

Modified: 
commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java
URL: 
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java?rev=1231133&r1=1231132&r2=1231133&view=diff
==============================================================================
--- 
commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java
 (original)
+++ 
commons/proper/math/trunk/src/test/java/org/apache/commons/math/linear/QRDecompositionTest.java
 Fri Jan 13 15:33:34 2012
@@ -18,28 +18,29 @@
 package org.apache.commons.math.linear;
 
 import java.util.Random;
+import org.apache.commons.math.linear.SingularMatrixException;
 
 import org.junit.Assert;
 import org.junit.Test;
 
 
 public class QRDecompositionTest {
-    double[][] testData3x3NonSingular = {
+    private double[][] testData3x3NonSingular = {
             { 12, -51, 4 },
             { 6, 167, -68 },
             { -4, 24, -41 }, };
 
-    double[][] testData3x3Singular = {
+    private double[][] testData3x3Singular = {
             { 1, 4, 7, },
             { 2, 5, 8, },
             { 3, 6, 9, }, };
 
-    double[][] testData3x4 = {
+    private double[][] testData3x4 = {
             { 12, -51, 4, 1 },
             { 6, 167, -68, 2 },
             { -4, 24, -41, 3 }, };
 
-    double[][] testData4x3 = {
+    private double[][] testData4x3 = {
             { 12, -51, 4, },
             { 6, 167, -68, },
             { -4, 24, -41, },
@@ -240,6 +241,14 @@ public class QRDecompositionTest {
 
     }
 
+    @Test(expected=SingularMatrixException.class)
+    public void testNonInvertible() {
+        QRDecomposition qr =
+            new 
QRDecomposition(MatrixUtils.createRealMatrix(testData3x3Singular));
+
+        final RealMatrix inv = qr.getSolver().getInverse();
+    }
+
     private RealMatrix createTestMatrix(final Random r, final int rows, final 
int columns) {
         RealMatrix m = MatrixUtils.createRealMatrix(rows, columns);
         m.walkInOptimizedOrder(new DefaultRealMatrixChangingVisitor(){