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/*
* Copyright (c) 2009-2020, 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.ops;
import org.ejml.UtilEjml;
import org.ejml.data.*;
import org.ejml.sparse.triplet.MatrixFeatures_DSTL;
import org.ejml.sparse.triplet.MatrixFeatures_FSTL;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.junit.jupiter.api.Assertions.*;
/**
* @author Peter Abeles
*/
public class TestReadMatrixCsv {
/**
* Make sure incorrectly formatted data is handled gracefully
*/
@Test
void bad_matrix_row() {
Assertions.assertThrows(IOException.class, () -> {
String s = "3 2 real\n0 0\n1 1";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
alg.read64();
fail("Should have had an exception");
});
}
@Test
void bad_matrix_col() {
Assertions.assertThrows(IOException.class, () -> {
String s = "3 2 real\n0 0\n1\n0 3";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
alg.read64();
fail("Should have had an exception");
});
}
@Test
void readDSTR() throws IOException {
String s = "3 2 3 real\n0 2 0.1\n0 0 -0.1\n2 1 12";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
DMatrixSparseTriplet expected = new DMatrixSparseTriplet(3, 2, 3);
expected.addItem(0, 2, 0.1);
expected.addItem(0, 0, -0.1);
expected.addItem(2, 1, 12);
DMatrixSparseTriplet m = alg.read64();
assertTrue(MatrixFeatures_DSTL.isEquals(expected, m, UtilEjml.TEST_F64));
}
@Test
void readFSTR() throws IOException {
String s = "3 2 3 real\n0 2 0.1\n0 0 -0.1\n2 1 12";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
FMatrixSparseTriplet expected = new FMatrixSparseTriplet(3, 2, 3);
expected.addItem(0, 2, 0.1f);
expected.addItem(0, 0, -0.1f);
expected.addItem(2, 1, 12.0f);
FMatrixSparseTriplet m = alg.read32();
assertTrue(MatrixFeatures_FSTL.isEquals(expected, m, UtilEjml.TEST_F32));
}
@Test
void readDDRM() throws IOException {
String s = "3 2 real\n0 -1\n1 -2\n0.9 -3.0";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
DMatrixRMaj found = alg.read64();
assertEquals(3, found.numRows);
assertEquals(2, found.numCols);
assertEquals(0.9, found.get(2, 0), UtilEjml.TEST_F64);
assertEquals(-3.0, found.get(2, 1), UtilEjml.TEST_F64);
}
@Test
void readFDRM() throws IOException {
String s = "3 2 real\n0 -1\n1 -2\n0.9 -3.0";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
FMatrixRMaj found = alg.read32();
assertEquals(3, found.numRows);
assertEquals(2, found.numCols);
assertEquals(0.9f, found.get(2, 0), UtilEjml.TEST_F32);
assertEquals(-3.0f, found.get(2, 1), UtilEjml.TEST_F32);
}
@Test
void readZDRM() throws IOException {
String s = "3 2 complex\n0 -1 2 -3\n1 -2 -1 -3.0\n0.9 -2 -1 -3.0";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
ZMatrixRMaj found = alg.read64();
assertEquals(3, found.numRows);
assertEquals(2, found.numCols);
assertEquals(0.9, found.getReal(2, 0), UtilEjml.TEST_F64);
assertEquals(-2, found.getImag(2, 0), UtilEjml.TEST_F64);
}
@Test
void readCDRM() throws IOException {
String s = "3 2 complex\n0 -1 2 -3\n1 -2 -1 -3.0\n0.9 -2 -1 -3.0";
ReadMatrixCsv alg = new ReadMatrixCsv(new ByteArrayInputStream(s.getBytes(UTF_8)));
CMatrixRMaj found = alg.read32();
assertEquals(3, found.numRows);
assertEquals(2, found.numCols);
assertEquals(0.9f, found.getReal(2, 0), UtilEjml.TEST_F32);
assertEquals(-2.0f, found.getImag(2, 0), UtilEjml.TEST_F32);
}
}
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