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/*******************************************************************************
* Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.report.internal.html.table;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
/**
* Unit tests for {@link SortIndex}.
*/
public class SortIndexTest {
private SortIndex<Integer> index;
@Before
public void setup() {
index = new SortIndex<Integer>(new Comparator<Integer>() {
public int compare(Integer i1, Integer i2) {
return i1.compareTo(i2);
}
});
}
@Test
public void testEmptyList() {
index.init(Arrays.<Integer> asList());
}
@Test
public void testSingleton() {
final List<Integer> list = createList(1);
index.init(list);
assertSequence(list);
}
@Test
public void testSorted() {
final List<Integer> list = createList(20);
index.init(list);
assertSequence(list);
}
@Test
public void testIncreaseBuffer() {
index.init(createList(15));
final List<Integer> list = createList(20);
index.init(list);
assertSequence(list);
}
@Test
public void testReverse() {
final List<Integer> list = createList(57);
Collections.reverse(list);
index.init(list);
assertSequence(list);
}
@Test
public void testShuffle() {
final List<Integer> list = createList(71);
Collections.shuffle(list);
index.init(list);
assertSequence(list);
}
private List<Integer> createList(int length) {
List<Integer> list = new ArrayList<Integer>(length);
for (int i = 0; i < length; i++) {
list.add(Integer.valueOf(i));
}
return list;
}
private void assertSequence(List<Integer> list) {
int idx = 0;
for (Integer i : list) {
assertEquals(i.intValue(), index.getPosition(idx++));
}
}
}
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