// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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package com.google.protobuf;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import static java.util.Arrays.asList;
import com.google.protobuf.Internal.LongList;
import java.util.Collections;
import java.util.ConcurrentModificationException;
import java.util.Iterator;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link LongArrayList}. */
@RunWith(JUnit4.class)
public class LongArrayListTest {
private static final LongArrayList UNARY_LIST = newImmutableLongArrayList(1);
private static final LongArrayList TERTIARY_LIST = newImmutableLongArrayList(1, 2, 3);
private LongArrayList list;
@Before
public void setUp() throws Exception {
list = new LongArrayList();
}
@Test
public void testEmptyListReturnsSameInstance() {
assertThat(LongArrayList.emptyList()).isSameInstanceAs(LongArrayList.emptyList());
}
@Test
public void testEmptyListIsImmutable() {
assertImmutable(LongArrayList.emptyList());
}
@Test
public void testMakeImmutable() {
list.addLong(3);
list.addLong(4);
list.addLong(5);
list.addLong(7);
list.makeImmutable();
assertImmutable(list);
}
@Test
public void testModificationWithIteration() {
list.addAll(asList(1L, 2L, 3L, 4L));
Iterator<Long> iterator = list.iterator();
assertThat(list).hasSize(4);
assertThat((long) list.get(0)).isEqualTo(1L);
assertThat((long) iterator.next()).isEqualTo(1L);
list.set(0, 1L);
assertThat((long) iterator.next()).isEqualTo(2L);
list.remove(0);
try {
iterator.next();
assertWithMessage("expected exception").fail();
} catch (ConcurrentModificationException e) {
// expected
}
iterator = list.iterator();
list.add(0, 0L);
try {
iterator.next();
assertWithMessage("expected exception").fail();
} catch (ConcurrentModificationException e) {
// expected
}
}
@Test
public void testGet() {
assertThat((long) TERTIARY_LIST.get(0)).isEqualTo(1L);
assertThat((long) TERTIARY_LIST.get(1)).isEqualTo(2L);
assertThat((long) TERTIARY_LIST.get(2)).isEqualTo(3L);
try {
TERTIARY_LIST.get(-1);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
TERTIARY_LIST.get(3);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testGetLong() {
assertThat(TERTIARY_LIST.getLong(0)).isEqualTo(1L);
assertThat(TERTIARY_LIST.getLong(1)).isEqualTo(2L);
assertThat(TERTIARY_LIST.getLong(2)).isEqualTo(3L);
try {
TERTIARY_LIST.get(-1);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
TERTIARY_LIST.get(3);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testIndexOf_nullElement() {
assertThat(TERTIARY_LIST.indexOf(null)).isEqualTo(-1);
}
@Test
public void testIndexOf_incompatibleElementType() {
assertThat(TERTIARY_LIST.indexOf(new Object())).isEqualTo(-1);
}
@Test
public void testIndexOf_notInList() {
assertThat(UNARY_LIST.indexOf(2L)).isEqualTo(-1);
}
@Test
public void testIndexOf_notInListWithDuplicates() {
LongArrayList listWithDupes = newImmutableLongArrayList(1L, 1L);
assertThat(listWithDupes.indexOf(2L)).isEqualTo(-1);
}
@Test
public void testIndexOf_inList() {
assertThat(TERTIARY_LIST.indexOf(2L)).isEqualTo(1);
}
@Test
public void testIndexOf_inListWithDuplicates_matchAtHead() {
LongArrayList listWithDupes = newImmutableLongArrayList(1L, 1L, 2L);
assertThat(listWithDupes.indexOf(1L)).isEqualTo(0);
}
@Test
public void testIndexOf_inListWithDuplicates_matchMidList() {
LongArrayList listWithDupes = newImmutableLongArrayList(2L, 1L, 1L, 2L);
assertThat(listWithDupes.indexOf(1L)).isEqualTo(1);
}
@Test
public void testContains_nullElement() {
assertThat(TERTIARY_LIST).doesNotContain(null);
}
@Test
public void testContains_incompatibleElementType() {
assertThat(TERTIARY_LIST).doesNotContain(new Object());
}
@Test
public void testContains_notInList() {
assertThat(UNARY_LIST).doesNotContain(2L);
}
@Test
public void testContains_notInListWithDuplicates() {
LongArrayList listWithDupes = newImmutableLongArrayList(1L, 1L);
assertThat(listWithDupes).doesNotContain(2L);
}
@Test
public void testContains_inList() {
assertThat(TERTIARY_LIST).contains(2L);
}
@Test
public void testContains_inListWithDuplicates_matchAtHead() {
LongArrayList listWithDupes = newImmutableLongArrayList(1L, 1L, 2L);
assertThat(listWithDupes).contains(1L);
}
@Test
public void testContains_inListWithDuplicates_matchMidList() {
LongArrayList listWithDupes = newImmutableLongArrayList(2L, 1L, 1L, 2L);
assertThat(listWithDupes).contains(1L);
}
@Test
public void testSize() {
assertThat(LongArrayList.emptyList()).isEmpty();
assertThat(UNARY_LIST).hasSize(1);
assertThat(TERTIARY_LIST).hasSize(3);
list.addLong(3);
list.addLong(4);
list.addLong(6);
list.addLong(8);
assertThat(list).hasSize(4);
list.remove(0);
assertThat(list).hasSize(3);
list.add(17L);
assertThat(list).hasSize(4);
}
@Test
public void testSet() {
list.addLong(2);
list.addLong(4);
assertThat((long) list.set(0, 3L)).isEqualTo(2L);
assertThat(list.getLong(0)).isEqualTo(3L);
assertThat((long) list.set(1, 0L)).isEqualTo(4L);
assertThat(list.getLong(1)).isEqualTo(0L);
try {
list.set(-1, 0L);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.set(2, 0L);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testSetLong() {
list.addLong(1);
list.addLong(3);
assertThat(list.setLong(0, 0)).isEqualTo(1L);
assertThat(list.getLong(0)).isEqualTo(0L);
assertThat(list.setLong(1, 0)).isEqualTo(3L);
assertThat(list.getLong(1)).isEqualTo(0L);
try {
list.setLong(-1, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.setLong(2, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testAdd() {
assertThat(list).isEmpty();
assertThat(list.add(2L)).isTrue();
assertThat(list).containsExactly(2L);
assertThat(list.add(3L)).isTrue();
list.add(0, 4L);
assertThat(list).containsExactly(4L, 2L, 3L).inOrder();
list.add(0, 1L);
list.add(0, 0L);
// Force a resize by getting up to 11 elements.
for (int i = 0; i < 6; i++) {
list.add(Long.valueOf(5 + i));
}
assertThat(list).containsExactly(0L, 1L, 4L, 2L, 3L, 5L, 6L, 7L, 8L, 9L, 10L).inOrder();
try {
list.add(-1, 5L);
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.add(4, 5L);
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testAddLong() {
assertThat(list).isEmpty();
list.addLong(2);
assertThat(list).containsExactly(2L);
list.addLong(3);
assertThat(list).containsExactly(2L, 3L).inOrder();
}
@Test
public void testAddAll() {
assertThat(list).isEmpty();
assertThat(list.addAll(Collections.singleton(1L))).isTrue();
assertThat(list).hasSize(1);
assertThat((long) list.get(0)).isEqualTo(1L);
assertThat(list.getLong(0)).isEqualTo(1L);
assertThat(list.addAll(asList(2L, 3L, 4L, 5L, 6L))).isTrue();
assertThat(list).containsExactly(1L, 2L, 3L, 4L, 5L, 6L).inOrder();
assertThat(list.addAll(TERTIARY_LIST)).isTrue();
assertThat(list).containsExactly(1L, 2L, 3L, 4L, 5L, 6L, 1L, 2L, 3L).inOrder();
assertThat(list.addAll(Collections.<Long>emptyList())).isFalse();
assertThat(list.addAll(LongArrayList.emptyList())).isFalse();
}
@Test
public void testEquals() {
LongArrayList list1 = new LongArrayList();
LongArrayList list2 = new LongArrayList();
assertThat(list1).isEqualTo(list2);
}
@Test
public void testRemove() {
list.addAll(TERTIARY_LIST);
assertThat((long) list.remove(0)).isEqualTo(1L);
assertThat(list).containsExactly(2L, 3L).inOrder();
assertThat(list.remove(Long.valueOf(3))).isTrue();
assertThat(list).containsExactly(2L);
assertThat(list.remove(Long.valueOf(3))).isFalse();
assertThat(list).containsExactly(2L);
assertThat((long) list.remove(0)).isEqualTo(2L);
assertThat(list).isEmpty();
try {
list.remove(-1);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.remove(0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testRemoveEnd_listAtCapacity() {
LongList toRemove = LongArrayList.emptyList().mutableCopyWithCapacity(1);
toRemove.addLong(3);
toRemove.remove(0);
assertThat(toRemove).isEmpty();
}
@Test
public void testRemove_listAtCapacity() {
LongList toRemove = LongArrayList.emptyList().mutableCopyWithCapacity(2);
toRemove.addLong(3);
toRemove.addLong(4);
toRemove.remove(0);
assertThat(toRemove).hasSize(1);
assertThat((long) toRemove.get(0)).isEqualTo(4L);
}
@Test
public void testSublistRemoveEndOfCapacity() {
LongList toRemove = LongArrayList.emptyList().mutableCopyWithCapacity(1);
toRemove.addLong(3);
toRemove.subList(0, 1).clear();
assertThat(toRemove).isEmpty();
}
private void assertImmutable(LongList list) {
if (list.contains(1L)) {
throw new RuntimeException("Cannot test the immutability of lists that contain 1.");
}
try {
list.add(1L);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.add(0, 1L);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(Collections.<Long>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(Collections.singletonList(1L));
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(new LongArrayList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(UNARY_LIST);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(0, Collections.singleton(1L));
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(0, UNARY_LIST);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(0, Collections.<Long>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addLong(0);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.clear();
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.remove(1);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.remove(new Object());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.removeAll(Collections.<Long>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.removeAll(Collections.singleton(1L));
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.removeAll(UNARY_LIST);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.retainAll(Collections.<Long>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.retainAll(Collections.singleton(1L));
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.retainAll(UNARY_LIST);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.set(0, 0L);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.setLong(0, 0);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
}
private static LongArrayList newImmutableLongArrayList(long... elements) {
LongArrayList list = new LongArrayList();
for (long element : elements) {
list.addLong(element);
}
list.makeImmutable();
return list;
}
}
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