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/*
* Copyright (C) 2008, Google Inc. and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.eclipse.jgit.util.IntList.IntComparator;
import org.junit.Test;
public class IntListTest {
@Test
public void testEmpty_DefaultCapacity() {
final IntList i = new IntList();
assertEquals(0, i.size());
try {
i.get(0);
fail("Accepted 0 index on empty list");
} catch (ArrayIndexOutOfBoundsException e) {
assertTrue(true);
}
}
@Test
public void testEmpty_SpecificCapacity() {
final IntList i = new IntList(5);
assertEquals(0, i.size());
try {
i.get(0);
fail("Accepted 0 index on empty list");
} catch (ArrayIndexOutOfBoundsException e) {
assertTrue(true);
}
}
@Test
public void testFilledWithRange() {
IntList list = IntList.filledWithRange(-2, 13);
assertEquals(15, list.size());
for (int i = 0; i < list.size(); i++) {
assertEquals(i - 2, list.get(i));
}
}
@Test
public void testAdd_SmallGroup() {
final IntList i = new IntList();
final int n = 5;
for (int v = 0; v < n; v++)
i.add(10 + v);
assertEquals(n, i.size());
for (int v = 0; v < n; v++)
assertEquals(10 + v, i.get(v));
try {
i.get(n);
fail("Accepted out of bound index on list");
} catch (ArrayIndexOutOfBoundsException e) {
assertTrue(true);
}
}
@Test
public void testAdd_ZeroCapacity() {
final IntList i = new IntList(0);
assertEquals(0, i.size());
i.add(1);
assertEquals(1, i.get(0));
}
@Test
public void testAdd_LargeGroup() {
final IntList i = new IntList();
final int n = 500;
for (int v = 0; v < n; v++)
i.add(10 + v);
assertEquals(n, i.size());
for (int v = 0; v < n; v++)
assertEquals(10 + v, i.get(v));
try {
i.get(n);
fail("Accepted out of bound index on list");
} catch (ArrayIndexOutOfBoundsException e) {
assertTrue(true);
}
}
@Test
public void testFillTo0() {
final IntList i = new IntList();
i.fillTo(0, Integer.MIN_VALUE);
assertEquals(0, i.size());
}
@Test
public void testFillTo1() {
final IntList i = new IntList();
i.fillTo(1, Integer.MIN_VALUE);
assertEquals(1, i.size());
i.add(0);
assertEquals(Integer.MIN_VALUE, i.get(0));
assertEquals(0, i.get(1));
}
@Test
public void testFillTo100() {
final IntList i = new IntList();
i.fillTo(100, Integer.MIN_VALUE);
assertEquals(100, i.size());
i.add(3);
assertEquals(Integer.MIN_VALUE, i.get(99));
assertEquals(3, i.get(100));
}
@Test
public void testClear() {
final IntList i = new IntList();
final int n = 5;
for (int v = 0; v < n; v++)
i.add(10 + v);
assertEquals(n, i.size());
i.clear();
assertEquals(0, i.size());
try {
i.get(0);
fail("Accepted 0 index on empty list");
} catch (ArrayIndexOutOfBoundsException e) {
assertTrue(true);
}
}
@Test
public void testSet() {
final IntList i = new IntList();
i.add(1);
assertEquals(1, i.size());
assertEquals(1, i.get(0));
i.set(0, 5);
assertEquals(5, i.get(0));
try {
i.set(5, 5);
fail("accepted set of 5 beyond end of list");
} catch (ArrayIndexOutOfBoundsException e){
assertTrue(true);
}
i.set(1, 2);
assertEquals(2, i.size());
assertEquals(2, i.get(1));
}
@Test
public void testContains() {
IntList i = new IntList();
i.add(1);
i.add(4);
assertTrue(i.contains(1));
assertTrue(i.contains(4));
assertFalse(i.contains(2));
}
@Test
public void testSort_byAbs() {
IntList list = new IntList();
list.add(-3);
list.add(-2);
list.add(0);
list.add(1);
list.add(4);
list.add(1);
list.sort(new AbsIntComparator());
int[] expected = { 0, 1, 1, -2, -3, 4 };
for (int i = 0; i < list.size(); i++) {
assertEquals(expected[i], list.get(i));
}
}
@Test
public void testToString() {
final IntList i = new IntList();
i.add(1);
assertEquals("[1]", i.toString());
i.add(13);
i.add(5);
assertEquals("[1, 13, 5]", i.toString());
}
private static class AbsIntComparator implements IntComparator {
private AbsIntComparator() {
}
@Override
public int compare(int a, int b) {
return Math.abs(a) - Math.abs(b);
}
}
}
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