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From er...@apache.org
Subject svn commit: r1430846 - /commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
Date Wed, 09 Jan 2013 13:18:00 GMT
Author: erans
Date: Wed Jan  9 13:17:59 2013
New Revision: 1430846

URL: http://svn.apache.org/viewvc?rev=1430846&view=rev
Log:
Unit tests for "DiagonalMatrix".

Added:
    commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
  (with props)

Added: commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java?rev=1430846&view=auto
==============================================================================
--- commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
(added)
+++ commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
Wed Jan  9 13:17:59 2013
@@ -0,0 +1,222 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.math3.linear;
+
+import org.junit.Test;
+import org.junit.Assert;
+
+import org.apache.commons.math3.exception.MathUnsupportedOperationException;
+import org.apache.commons.math3.exception.OutOfRangeException;
+import org.apache.commons.math3.TestUtils;
+
+/**
+ * Test cases for the {@link DiagonalMatrix} class.
+ */
+public class DiagonalMatrixTest {
+    @Test
+    public void testConstructor1() {
+        final int dim = 3;
+        final DiagonalMatrix m = new DiagonalMatrix(dim);
+        Assert.assertEquals(dim, m.getRowDimension());
+        Assert.assertEquals(dim, m.getColumnDimension());
+    }
+
+    @Test
+    public void testConstructor2() {
+        final double[] d = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m = new DiagonalMatrix(d);
+        for (int i = 0; i < m.getRowDimension(); i++) {
+            for (int j = 0; j < m.getRowDimension(); j++) {
+                if (i == j) {
+                    Assert.assertEquals(d[i], m.getEntry(i, j), 0d);
+                } else {
+                    Assert.assertEquals(0d, m.getEntry(i, j), 0d);
+                }
+            }
+        }
+
+        // Check that the underlying was copied.
+        d[0] = 0;
+        Assert.assertFalse(d[0] == m.getEntry(0, 0));
+    }
+
+    @Test
+    public void testConstructor3() {
+        final double[] d = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m = new DiagonalMatrix(d, false);
+        for (int i = 0; i < m.getRowDimension(); i++) {
+            for (int j = 0; j < m.getRowDimension(); j++) {
+                if (i == j) {
+                    Assert.assertEquals(d[i], m.getEntry(i, j), 0d);
+                } else {
+                    Assert.assertEquals(0d, m.getEntry(i, j), 0d);
+                }
+            }
+        }
+
+        // Check that the underlying is referenced.
+        d[0] = 0;
+        Assert.assertTrue(d[0] == m.getEntry(0, 0));
+
+    }
+
+    @Test
+    public void testGetData() {
+        final double[] data = { -1.2, 3.4, 5 };
+        final int dim = 3;
+        final DiagonalMatrix m = new DiagonalMatrix(dim);
+        for (int i = 0; i < dim; i++) {
+            m.setEntry(i, i, data[i]);
+        }
+
+        final double[][] out = m.getData();
+        Assert.assertEquals(dim, out.length);
+        for (int i = 0; i < m.getRowDimension(); i++) {
+            Assert.assertEquals(dim, out[i].length);
+            for (int j = 0; j < m.getRowDimension(); j++) {
+                if (i == j) {
+                    Assert.assertEquals(data[i], out[i][j], 0d);
+                } else {
+                    Assert.assertEquals(0d, out[i][j], 0d);
+                }
+            }
+        }        
+    }
+
+    @Test
+    public void testAdd() {
+        final double[] data1 = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m1 = new DiagonalMatrix(data1);
+ 
+        final double[] data2 = { 10.1, 2.3, 45 };
+        final DiagonalMatrix m2 = new DiagonalMatrix(data2);
+
+        final DiagonalMatrix result = m1.add(m2);
+        Assert.assertEquals(m1.getRowDimension(), result.getRowDimension());
+        for (int i = 0; i < result.getRowDimension(); i++) {
+            for (int j = 0; j < result.getRowDimension(); j++) {
+                if (i == j) {
+                    Assert.assertEquals(data1[i] + data2[i], result.getEntry(i, j), 0d);
+                } else {
+                    Assert.assertEquals(0d, result.getEntry(i, j), 0d);
+                }
+            }
+        }
+    }
+
+    @Test
+    public void testAddToEntry() {
+        final double[] data = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m = new DiagonalMatrix(data);
+
+        for (int i = 0; i < m.getRowDimension(); i++) {
+            m.addToEntry(i, i, i);
+            Assert.assertEquals(data[i] + i, m.getEntry(i, i), 0d);
+        }
+    }
+
+    @Test
+    public void testMultiplyEntry() {
+        final double[] data = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m = new DiagonalMatrix(data);
+
+        for (int i = 0; i < m.getRowDimension(); i++) {
+            m.multiplyEntry(i, i, i);
+            Assert.assertEquals(data[i] * i, m.getEntry(i, i), 0d);
+        }
+    }
+
+    @Test
+    public void testMultiply1() {
+        final double[] data1 = { -1.2, 3.4, 5 };
+        final DiagonalMatrix m1 = new DiagonalMatrix(data1);
+        final double[] data2 = { 10.1, 2.3, 45 };
+        final DiagonalMatrix m2 = new DiagonalMatrix(data2);
+
+        final DiagonalMatrix result = m1.multiply(m2);
+        Assert.assertEquals(m1.getRowDimension(), result.getRowDimension());
+        for (int i = 0; i < result.getRowDimension(); i++) {
+            for (int j = 0; j < result.getRowDimension(); j++) {
+                if (i == j) {
+                    Assert.assertEquals(data1[i] * data2[i], result.getEntry(i, j), 0d);
+                } else {
+                    Assert.assertEquals(0d, result.getEntry(i, j), 0d);
+                }
+            }
+        }
+    }
+
+    @Test
+    public void testMultiply2() {
+        final double[] data1 = { -1.2, 3.4, 5 };
+        final DiagonalMatrix diag1 = new DiagonalMatrix(data1);
+
+        final double[][] data2 = { { -1.2, 3.4 },
+                                   { -5.6, 7.8 },
+                                   {  9.1, 2.3 } };
+        final RealMatrix dense2 = new Array2DRowRealMatrix(data2);
+        final RealMatrix dense1 = new Array2DRowRealMatrix(diag1.getData());
+
+        final RealMatrix diagResult = diag1.multiply(dense2);
+        final RealMatrix denseResult = dense1.multiply(dense2);
+
+        for (int i = 0; i < dense1.getRowDimension(); i++) {
+            for (int j = 0; j < dense2.getColumnDimension(); j++) {
+                Assert.assertEquals(denseResult.getEntry(i, j),
+                                    diagResult.getEntry(i, j), 0d);
+            }
+        }
+    }
+
+    @Test
+    public void testOperate() {
+        final double[] data = { -1.2, 3.4, 5 };
+        final DiagonalMatrix diag = new DiagonalMatrix(data);
+        final RealMatrix dense = new Array2DRowRealMatrix(diag.getData());
+
+        final double[] v = { 6.7, 890.1, 23.4 };
+        final double[] diagResult = diag.operate(v);
+        final double[] denseResult = dense.operate(v);
+
+        TestUtils.assertEquals(diagResult, denseResult, 0d);
+    }
+
+    @Test
+    public void testPreMultiply() {
+        final double[] data = { -1.2, 3.4, 5 };
+        final DiagonalMatrix diag = new DiagonalMatrix(data);
+        final RealMatrix dense = new Array2DRowRealMatrix(diag.getData());
+
+        final double[] v = { 6.7, 890.1, 23.4 };
+        final double[] diagResult = diag.preMultiply(v);
+        final double[] denseResult = dense.preMultiply(v);
+
+        TestUtils.assertEquals(diagResult, denseResult, 0d);
+    }
+
+    @Test(expected=MathUnsupportedOperationException.class)
+    public void testSetNonDiagonalEntry() {
+        final DiagonalMatrix diag = new DiagonalMatrix(3);
+        diag.setEntry(1, 2, 3.4);
+    }
+
+    @Test(expected=OutOfRangeException.class)
+    public void testSetEntryOutOfRange() {
+        final DiagonalMatrix diag = new DiagonalMatrix(3);
+        diag.setEntry(3, 3, 3.4);
+    }
+}

Propchange: commons/proper/math/trunk/src/test/java/org/apache/commons/math3/linear/DiagonalMatrixTest.java
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    svn:eol-style = native



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