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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.data;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;
public class TestIGrowArray {
@Test
public void length() {
IGrowArray array = new IGrowArray();
assertEquals(0,array.length());
array = new IGrowArray(5);
assertEquals(5,array.length());
}
@Test
public void reshape() {
IGrowArray array = new IGrowArray();
assertEquals(0,array.length());
array.reshape(10);
assertEquals(10,array.data.length);
assertEquals(10,array.length());
array.reshape(5);
assertEquals(10,array.data.length);
assertEquals(5,array.length());
}
@Test
public void growInternal() {
IGrowArray array = new IGrowArray();
array.reshape(10);
for (int i = 0; i < array.length; i++) {
array.data[i] = i;
}
int expected = array.data.length+4;
array.growInternal(4);
assertEquals(expected,array.data.length);
for (int i = 0; i < array.length; i++) {
assertEquals(i, array.get(i));
}
}
@Test
public void get() {
IGrowArray array = new IGrowArray(8);
array.reshape(5);
array.data[0] = 1;
array.data[2] = 3;
array.data[3] = 2;
assertEquals(1,array.get(0));
assertEquals(0,array.get(1));
assertEquals(3,array.get(2));
assertEquals(2,array.get(3));
try {
array.get(5);
fail("should have thrown an exception");
} catch( RuntimeException ignore ){}
try {
array.get(-1);
fail("should have thrown an exception");
} catch( RuntimeException ignore ){}
}
@Test
public void set() {
IGrowArray array = new IGrowArray(8);
array.reshape(5);
array.set(0,1);
array.set(2,3);
array.set(3,2);
assertEquals(1,array.data[0]);
assertEquals(0,array.data[1]);
assertEquals(3,array.data[2]);
assertEquals(2,array.data[3]);
try {
array.set(5,2);
fail("should have thrown an exception");
} catch( RuntimeException ignore ){}
try {
array.set(-1,2);
fail("should have thrown an exception");
} catch( RuntimeException ignore ){}
}
@Test
public void free() {
IGrowArray array = new IGrowArray(8);
array.free();
assertEquals(0,array.length());
assertEquals(0,array.data.length);
}
}
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