/*
* 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.ignite.ml.math.impls.matrix;
import org.apache.ignite.ml.math.ExternalizeTest;
import org.apache.ignite.ml.math.Matrix;
import org.apache.ignite.ml.math.Vector;
import org.apache.ignite.ml.math.exceptions.UnsupportedOperationException;
import org.apache.ignite.ml.math.impls.MathTestConstants;
import org.apache.ignite.ml.math.impls.vector.DenseLocalOnHeapVector;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* Tests for {@link DiagonalMatrix}.
*/
public class DiagonalMatrixTest extends ExternalizeTest<DiagonalMatrix> {
/** */
public static final String UNEXPECTED_VALUE = "Unexpected value";
/** */
private DiagonalMatrix testMatrix;
/** */
@Before
public void setup() {
DenseLocalOnHeapMatrix parent = new DenseLocalOnHeapMatrix(MathTestConstants.STORAGE_SIZE, MathTestConstants.STORAGE_SIZE);
fillMatrix(parent);
testMatrix = new DiagonalMatrix(parent);
}
/** {@inheritDoc} */
@Override public void externalizeTest() {
externalizeTest(testMatrix);
}
/** */
@Test
public void testSetGetBasic() {
double testVal = 42;
for (int i = 0; i < MathTestConstants.STORAGE_SIZE; i++) {
testMatrix.set(i, i, testVal);
assertEquals(UNEXPECTED_VALUE + " at (" + i + "," + i + ")", testMatrix.get(i, i), testVal, 0d);
}
//noinspection EqualsWithItself
assertTrue("Matrix is expected to be equal to self.", testMatrix.equals(testMatrix));
//noinspection ObjectEqualsNull
assertFalse("Matrix is expected to be not equal to null.", testMatrix.equals(null));
}
/** */
@Test
public void testSetGet() {
verifyDiagonal(testMatrix);
final int size = MathTestConstants.STORAGE_SIZE;
for (Matrix m : new Matrix[] {
new DenseLocalOnHeapMatrix(size + 1, size),
new DenseLocalOnHeapMatrix(size, size + 1)}) {
fillMatrix(m);
verifyDiagonal(new DiagonalMatrix(m));
}
final double[] data = new double[size];
for (int i = 0; i < size; i++)
data[i] = 1 + i;
final Matrix m = new DiagonalMatrix(new DenseLocalOnHeapVector(data));
assertEquals("Rows in matrix constructed from vector", size, m.rowSize());
assertEquals("Cols in matrix constructed from vector", size, m.columnSize());
for (int i = 0; i < size; i++)
assertEquals(UNEXPECTED_VALUE + " at vector index " + i, data[i], m.get(i, i), 0d);
verifyDiagonal(m);
final Matrix m1 = new DiagonalMatrix(data);
assertEquals("Rows in matrix constructed from array", size, m1.rowSize());
assertEquals("Cols in matrix constructed from array", size, m1.columnSize());
for (int i = 0; i < size; i++)
assertEquals(UNEXPECTED_VALUE + " at array index " + i, data[i], m1.get(i, i), 0d);
verifyDiagonal(m1);
}
/** */
@Test
public void testConstant() {
final int size = MathTestConstants.STORAGE_SIZE;
for (double val : new double[] {-1.0, 0.0, 1.0}) {
Matrix m = new DiagonalMatrix(size, val);
assertEquals("Rows in matrix", size, m.rowSize());
assertEquals("Cols in matrix", size, m.columnSize());
for (int i = 0; i < size; i++)
assertEquals(UNEXPECTED_VALUE + " at index " + i, val, m.get(i, i), 0d);
verifyDiagonal(m, true);
}
}
/** */
@Test
public void testAttributes() {
assertTrue(UNEXPECTED_VALUE, testMatrix.rowSize() == MathTestConstants.STORAGE_SIZE);
assertTrue(UNEXPECTED_VALUE, testMatrix.columnSize() == MathTestConstants.STORAGE_SIZE);
assertFalse(UNEXPECTED_VALUE, testMatrix.isArrayBased());
assertTrue(UNEXPECTED_VALUE, testMatrix.isDense());
assertFalse(UNEXPECTED_VALUE, testMatrix.isDistributed());
assertEquals(UNEXPECTED_VALUE, testMatrix.isRandomAccess(), !testMatrix.isSequentialAccess());
assertTrue(UNEXPECTED_VALUE, testMatrix.isRandomAccess());
}
/** */
@Test
public void testNullParams() {
DenseLocalOnHeapMatrixConstructorTest.verifyAssertionError(() -> new DiagonalMatrix((Matrix)null), "Null Matrix parameter");
DenseLocalOnHeapMatrixConstructorTest.verifyAssertionError(() -> new DiagonalMatrix((Vector)null), "Null Vector parameter");
DenseLocalOnHeapMatrixConstructorTest.verifyAssertionError(() -> new DiagonalMatrix((double[])null), "Null double[] parameter");
}
/** */
private void verifyDiagonal(Matrix m, boolean readonly) {
final int rows = m.rowSize(), cols = m.columnSize();
final String sizeDetails = "rows" + "X" + "cols " + rows + "X" + cols;
for (int i = 0; i < rows; i++)
for (int j = 0; j < cols; j++) {
final String details = " at (" + i + "," + j + "), " + sizeDetails;
final boolean diagonal = i == j;
final double old = m.get(i, j);
if (!diagonal)
assertEquals(UNEXPECTED_VALUE + details, 0, old, 0d);
final double exp = diagonal && !readonly ? old + 1 : old;
boolean expECaught = false;
try {
m.set(i, j, exp);
}
catch (UnsupportedOperationException uoe) {
if (diagonal && !readonly)
throw uoe;
expECaught = true;
}
if ((!diagonal || readonly) && !expECaught)
fail("Expected exception was not caught " + details);
assertEquals(UNEXPECTED_VALUE + details, exp, m.get(i, j), 0d);
}
}
/** */
private void verifyDiagonal(Matrix m) {
verifyDiagonal(m, false);
}
/** */
private void fillMatrix(Matrix m) {
final int rows = m.rowSize(), cols = m.columnSize();
boolean negative = false;
for (int i = 0; i < rows; i++)
for (int j = 0; j < cols; j++)
m.set(i, j, (negative = !negative) ? -(i * cols + j + 1) : i * cols + j + 1);
}
}