/*
* Copyright (C) 2011, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
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* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
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* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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package org.eclipse.jgit.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import java.util.Iterator;
import org.junit.Test;
public class BlockListTest {
@Test
public void testEmptyList() {
BlockList<String> empty;
empty = new BlockList<String>();
assertEquals(0, empty.size());
assertTrue(empty.isEmpty());
assertFalse(empty.iterator().hasNext());
empty = new BlockList<String>(0);
assertEquals(0, empty.size());
assertTrue(empty.isEmpty());
assertFalse(empty.iterator().hasNext());
empty = new BlockList<String>(1);
assertEquals(0, empty.size());
assertTrue(empty.isEmpty());
assertFalse(empty.iterator().hasNext());
empty = new BlockList<String>(64);
assertEquals(0, empty.size());
assertTrue(empty.isEmpty());
assertFalse(empty.iterator().hasNext());
}
@Test
public void testGet() {
BlockList<String> list = new BlockList<String>(4);
try {
list.get(-1);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(-1), badIndex.getMessage());
}
try {
list.get(0);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(0), badIndex.getMessage());
}
try {
list.get(4);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(4), badIndex.getMessage());
}
String fooStr = "foo";
String barStr = "bar";
String foobarStr = "foobar";
list.add(fooStr);
list.add(barStr);
list.add(foobarStr);
assertSame(fooStr, list.get(0));
assertSame(barStr, list.get(1));
assertSame(foobarStr, list.get(2));
try {
list.get(3);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(3), badIndex.getMessage());
}
}
@Test
public void testSet() {
BlockList<String> list = new BlockList<String>(4);
try {
list.set(-1, "foo");
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(-1), badIndex.getMessage());
}
try {
list.set(0, "foo");
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(0), badIndex.getMessage());
}
try {
list.set(4, "foo");
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(4), badIndex.getMessage());
}
String fooStr = "foo";
String barStr = "bar";
String foobarStr = "foobar";
list.add(fooStr);
list.add(barStr);
list.add(foobarStr);
assertSame(fooStr, list.get(0));
assertSame(barStr, list.get(1));
assertSame(foobarStr, list.get(2));
assertSame(fooStr, list.set(0, barStr));
assertSame(barStr, list.set(1, fooStr));
assertSame(barStr, list.get(0));
assertSame(fooStr, list.get(1));
try {
list.set(3, "bar");
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(3), badIndex.getMessage());
}
}
@Test
public void testAddToEnd() {
BlockList<Integer> list = new BlockList<Integer>(4);
int cnt = BlockList.BLOCK_SIZE * 3;
for (int i = 0; i < cnt; i++)
list.add(Integer.valueOf(42 + i));
assertEquals(cnt, list.size());
for (int i = 0; i < cnt; i++)
assertEquals(Integer.valueOf(42 + i), list.get(i));
list.clear();
assertEquals(0, list.size());
assertTrue(list.isEmpty());
for (int i = 0; i < cnt; i++)
list.add(i, Integer.valueOf(42 + i));
assertEquals(cnt, list.size());
for (int i = 0; i < cnt; i++)
assertEquals(Integer.valueOf(42 + i), list.get(i));
}
@Test
public void testAddSlowPath() {
BlockList<String> list = new BlockList<String>(4);
String fooStr = "foo";
String barStr = "bar";
String foobarStr = "foobar";
String firstStr = "first";
String zeroStr = "zero";
list.add(fooStr);
list.add(barStr);
list.add(foobarStr);
assertEquals(3, list.size());
list.add(1, firstStr);
assertEquals(4, list.size());
assertSame(fooStr, list.get(0));
assertSame(firstStr, list.get(1));
assertSame(barStr, list.get(2));
assertSame(foobarStr, list.get(3));
list.add(0, zeroStr);
assertEquals(5, list.size());
assertSame(zeroStr, list.get(0));
assertSame(fooStr, list.get(1));
assertSame(firstStr, list.get(2));
assertSame(barStr, list.get(3));
assertSame(foobarStr, list.get(4));
}
@Test
public void testRemoveFromEnd() {
BlockList<String> list = new BlockList<String>(4);
String fooStr = "foo";
String barStr = "bar";
String foobarStr = "foobar";
list.add(fooStr);
list.add(barStr);
list.add(foobarStr);
assertSame(foobarStr, list.remove(2));
assertEquals(2, list.size());
assertSame(barStr, list.remove(1));
assertEquals(1, list.size());
assertSame(fooStr, list.remove(0));
assertEquals(0, list.size());
}
@Test
public void testRemoveSlowPath() {
BlockList<String> list = new BlockList<String>(4);
String fooStr = "foo";
String barStr = "bar";
String foobarStr = "foobar";
list.add(fooStr);
list.add(barStr);
list.add(foobarStr);
assertSame(barStr, list.remove(1));
assertEquals(2, list.size());
assertSame(fooStr, list.get(0));
assertSame(foobarStr, list.get(1));
assertSame(fooStr, list.remove(0));
assertEquals(1, list.size());
assertSame(foobarStr, list.get(0));
assertSame(foobarStr, list.remove(0));
assertEquals(0, list.size());
}
@Test
public void testAddRemoveAdd() {
BlockList<Integer> list = new BlockList<Integer>();
for (int i = 0; i < BlockList.BLOCK_SIZE + 1; i++)
list.add(Integer.valueOf(i));
assertEquals(Integer.valueOf(BlockList.BLOCK_SIZE),
list.remove(list.size() - 1));
assertEquals(Integer.valueOf(BlockList.BLOCK_SIZE - 1),
list.remove(list.size() - 1));
assertTrue(list.add(Integer.valueOf(1)));
assertEquals(Integer.valueOf(1), list.get(list.size() - 1));
}
@Test
public void testAddAllFromOtherList() {
BlockList<Integer> src = new BlockList<Integer>(4);
int cnt = BlockList.BLOCK_SIZE * 2;
for (int i = 0; i < cnt; i++)
src.add(Integer.valueOf(42 + i));
src.add(Integer.valueOf(1));
BlockList<Integer> dst = new BlockList<Integer>(4);
dst.add(Integer.valueOf(255));
dst.addAll(src);
assertEquals(cnt + 2, dst.size());
for (int i = 0; i < cnt; i++)
assertEquals(Integer.valueOf(42 + i), dst.get(i + 1));
assertEquals(Integer.valueOf(1), dst.get(dst.size() - 1));
}
@Test
public void testFastIterator() {
BlockList<Integer> list = new BlockList<Integer>(4);
int cnt = BlockList.BLOCK_SIZE * 3;
for (int i = 0; i < cnt; i++)
list.add(Integer.valueOf(42 + i));
assertEquals(cnt, list.size());
Iterator<Integer> itr = list.iterator();
for (int i = 0; i < cnt; i++) {
assertTrue(itr.hasNext());
assertEquals(Integer.valueOf(42 + i), itr.next());
}
assertFalse(itr.hasNext());
}
@Test
public void testAddRejectsBadIndexes() {
BlockList<Integer> list = new BlockList<Integer>(4);
list.add(Integer.valueOf(41));
try {
list.add(-1, Integer.valueOf(42));
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(-1), badIndex.getMessage());
}
try {
list.add(4, Integer.valueOf(42));
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(4), badIndex.getMessage());
}
}
@Test
public void testRemoveRejectsBadIndexes() {
BlockList<Integer> list = new BlockList<Integer>(4);
list.add(Integer.valueOf(41));
try {
list.remove(-1);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(-1), badIndex.getMessage());
}
try {
list.remove(4);
} catch (IndexOutOfBoundsException badIndex) {
assertEquals(String.valueOf(4), badIndex.getMessage());
}
}
}