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/*
* Copyright (c) 2020, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* Licensed 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.ejml.data;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
/**
* @author Peter Abeles
*/
public class TestBMatrixRMaj {
@Test
public void getNumElements() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(20, M.getNumElements());
}
@Test
public void getIndex() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(2*5+3, M.getIndex(2,3));
}
@Test
public void reshape() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
boolean data[] = M.data;
M.reshape(3, 4);
assertEquals(12, M.getNumElements());
assertTrue(data == M.data);
M.reshape(6, 7);
assertEquals(6 * 7, M.getNumElements());
assertTrue(6*7 <= M.data.length);
assertTrue(data != M.data);
}
@Test
public void getNumRows() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(4, M.getNumRows());
}
@Test
public void getNumCols() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(5, M.getNumCols());
}
@Test
public void copy() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
M.set(2,3,true);
BMatrixRMaj N = M.copy();
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 5; col++) {
if( row == 2 && col == 3 )
assertEquals(true,N.get(2,3));
else
assertEquals(false,N.get(row,col));
}
}
}
@Test
public void set_matrix() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
M.set(2,3,true);
BMatrixRMaj N = new BMatrixRMaj(4,5);
N.setTo(M);
for (int row = 0; row < 4; row++) {
for (int col = 0; col < 5; col++) {
if( row == 2 && col == 3 )
assertEquals(true,N.get(2,3));
else
assertEquals(false,N.get(row,col));
}
}
}
@Test
public void set_get_row_col() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(false, M.get(2, 3));
M.set(2, 3, true);
assertEquals(true, M.get(2, 3));
try {
M.set(6,6,true);
fail("Should have thrown an exception");
} catch( IllegalArgumentException ignore){}
try {
M.get(6, 6);
fail("Should have thrown an exception");
} catch( IllegalArgumentException ignore){}
}
@Test
public void unsafe_set_get_row_col() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(false, M.get(2, 3));
M.set(2, 3, true);
assertEquals(true, M.get(2, 3));
}
@Test
public void fill() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
M.set(0,1,true);
M.set(3,1,true);
M.fill(false);
for (int i = 0; i < M.getNumElements(); i++) {
assertFalse(M.get(i));
}
M.fill(true);
for (int i = 0; i < M.getNumElements(); i++) {
assertTrue(M.get(i));
}
}
@Test
public void sum() {
BMatrixRMaj M = new BMatrixRMaj(4,5);
assertEquals(0,M.sum());
M.set(0,1,true);
M.set(3,1,true);
assertEquals(2,M.sum());
}
}
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