// 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,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.IntList;
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 IntArrayList}. */
@RunWith(JUnit4.class)
public class IntArrayListTest {
private static final IntArrayList UNARY_LIST = newImmutableIntArrayList(1);
private static final IntArrayList TERTIARY_LIST = newImmutableIntArrayList(1, 2, 3);
private IntArrayList list;
@Before
public void setUp() throws Exception {
list = new IntArrayList();
}
@Test
public void testEmptyListReturnsSameInstance() {
assertThat(IntArrayList.emptyList()).isSameInstanceAs(IntArrayList.emptyList());
}
@Test
public void testEmptyListIsImmutable() {
assertImmutable(IntArrayList.emptyList());
}
@Test
public void testMakeImmutable() {
list.addInt(3);
list.addInt(4);
list.addInt(5);
list.addInt(7);
list.makeImmutable();
assertImmutable(list);
}
@Test
public void testModificationWithIteration() {
list.addAll(asList(1, 2, 3, 4));
Iterator<Integer> iterator = list.iterator();
assertThat(list).hasSize(4);
assertThat((int) list.get(0)).isEqualTo(1);
assertThat((int) iterator.next()).isEqualTo(1);
list.set(0, 1);
assertThat((int) iterator.next()).isEqualTo(2);
list.remove(0);
try {
iterator.next();
assertWithMessage("expected exception").fail();
} catch (ConcurrentModificationException e) {
// expected
}
iterator = list.iterator();
list.add(0, 0);
try {
iterator.next();
assertWithMessage("expected exception").fail();
} catch (ConcurrentModificationException e) {
// expected
}
}
@Test
public void testGet() {
assertThat((int) TERTIARY_LIST.get(0)).isEqualTo(1);
assertThat((int) TERTIARY_LIST.get(1)).isEqualTo(2);
assertThat((int) TERTIARY_LIST.get(2)).isEqualTo(3);
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 testGetInt() {
assertThat(TERTIARY_LIST.getInt(0)).isEqualTo(1);
assertThat(TERTIARY_LIST.getInt(1)).isEqualTo(2);
assertThat(TERTIARY_LIST.getInt(2)).isEqualTo(3);
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(2)).isEqualTo(-1);
}
@Test
public void testIndexOf_notInListWithDuplicates() {
IntArrayList listWithDupes = newImmutableIntArrayList(1, 1);
assertThat(listWithDupes.indexOf(2)).isEqualTo(-1);
}
@Test
public void testIndexOf_inList() {
assertThat(TERTIARY_LIST.indexOf(2)).isEqualTo(1);
}
@Test
public void testIndexOf_inListWithDuplicates_matchAtHead() {
IntArrayList listWithDupes = newImmutableIntArrayList(1, 1, 2);
assertThat(listWithDupes.indexOf(1)).isEqualTo(0);
}
@Test
public void testIndexOf_inListWithDuplicates_matchMidList() {
IntArrayList listWithDupes = newImmutableIntArrayList(2, 1, 1, 2);
assertThat(listWithDupes.indexOf(1)).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(2);
}
@Test
public void testContains_notInListWithDuplicates() {
IntArrayList listWithDupes = newImmutableIntArrayList(1, 1);
assertThat(listWithDupes).doesNotContain(2);
}
@Test
public void testContains_inList() {
assertThat(TERTIARY_LIST).contains(2);
}
@Test
public void testContains_inListWithDuplicates_matchAtHead() {
IntArrayList listWithDupes = newImmutableIntArrayList(1, 1, 2);
assertThat(listWithDupes).contains(1);
}
@Test
public void testContains_inListWithDuplicates_matchMidList() {
IntArrayList listWithDupes = newImmutableIntArrayList(2, 1, 1, 2);
assertThat(listWithDupes).contains(1);
}
@Test
public void testSize() {
assertThat(IntArrayList.emptyList()).isEmpty();
assertThat(UNARY_LIST).hasSize(1);
assertThat(TERTIARY_LIST).hasSize(3);
list.addInt(3);
list.addInt(4);
list.addInt(6);
list.addInt(8);
assertThat(list).hasSize(4);
list.remove(0);
assertThat(list).hasSize(3);
list.add(17);
assertThat(list).hasSize(4);
}
@Test
public void testSet() {
list.addInt(2);
list.addInt(4);
assertThat((int) list.set(0, 3)).isEqualTo(2);
assertThat(list.getInt(0)).isEqualTo(3);
assertThat((int) list.set(1, 0)).isEqualTo(4);
assertThat(list.getInt(1)).isEqualTo(0);
try {
list.set(-1, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.set(2, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testSetInt() {
list.addInt(1);
list.addInt(3);
assertThat(list.setInt(0, 0)).isEqualTo(1);
assertThat(list.getInt(0)).isEqualTo(0);
assertThat(list.setInt(1, 0)).isEqualTo(3);
assertThat(list.getInt(1)).isEqualTo(0);
try {
list.setInt(-1, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.setInt(2, 0);
assertWithMessage("expected exception").fail();
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testAdd() {
assertThat(list).isEmpty();
assertThat(list.add(2)).isTrue();
assertThat(list).containsExactly(2);
assertThat(list.add(3)).isTrue();
list.add(0, 4);
assertThat(list).containsExactly(4, 2, 3).inOrder();
list.add(0, 1);
list.add(0, 0);
// Force a resize by getting up to 11 elements.
for (int i = 0; i < 6; i++) {
list.add(Integer.valueOf(5 + i));
}
assertThat(list).containsExactly(0, 1, 4, 2, 3, 5, 6, 7, 8, 9, 10).inOrder();
try {
list.add(-1, 5);
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
list.add(4, 5);
} catch (IndexOutOfBoundsException e) {
// expected
}
}
@Test
public void testAddInt() {
assertThat(list).isEmpty();
list.addInt(2);
assertThat(list).containsExactly(2);
list.addInt(3);
assertThat(list).containsExactly(2, 3).inOrder();
}
@Test
public void testAddAll() {
assertThat(list).isEmpty();
assertThat(list.addAll(Collections.singleton(1))).isTrue();
assertThat(list).hasSize(1);
assertThat((int) list.get(0)).isEqualTo(1);
assertThat(list.getInt(0)).isEqualTo(1);
assertThat(list.addAll(asList(2, 3, 4, 5, 6))).isTrue();
assertThat(list).containsExactly(1, 2, 3, 4, 5, 6).inOrder();
assertThat(list.addAll(TERTIARY_LIST)).isTrue();
assertThat(list).containsExactly(1, 2, 3, 4, 5, 6, 1, 2, 3).inOrder();
assertThat(list.addAll(Collections.<Integer>emptyList())).isFalse();
assertThat(list.addAll(IntArrayList.emptyList())).isFalse();
}
@Test
public void testEquals() {
IntArrayList list1 = new IntArrayList();
IntArrayList list2 = new IntArrayList();
assertThat(list1).isEqualTo(list2);
}
@Test
public void testRemove() {
list.addAll(TERTIARY_LIST);
assertThat((int) list.remove(0)).isEqualTo(1);
assertThat(list).containsExactly(2, 3).inOrder();
assertThat(list.remove(Integer.valueOf(3))).isTrue();
assertThat(list).containsExactly(2);
assertThat(list.remove(Integer.valueOf(3))).isFalse();
assertThat(list).containsExactly(2);
assertThat((int) list.remove(0)).isEqualTo(2);
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() {
IntList toRemove = IntArrayList.emptyList().mutableCopyWithCapacity(1);
toRemove.addInt(3);
toRemove.remove(0);
assertThat(toRemove).isEmpty();
}
@Test
public void testRemove_listAtCapacity() {
IntList toRemove = IntArrayList.emptyList().mutableCopyWithCapacity(2);
toRemove.addInt(3);
toRemove.addInt(4);
toRemove.remove(0);
assertThat(toRemove).hasSize(1);
assertThat((int) toRemove.get(0)).isEqualTo(4);
}
@Test
public void testSublistRemoveEndOfCapacity() {
IntList toRemove = IntArrayList.emptyList().mutableCopyWithCapacity(1);
toRemove.addInt(3);
toRemove.subList(0, 1).clear();
assertThat(toRemove).isEmpty();
}
private void assertImmutable(IntList list) {
if (list.contains(1)) {
throw new RuntimeException("Cannot test the immutability of lists that contain 1.");
}
try {
list.add(1);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.add(0, 1);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(Collections.<Integer>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(Collections.singletonList(1));
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addAll(new IntArrayList());
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(1));
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.<Integer>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.addInt(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.<Integer>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.removeAll(Collections.singleton(1));
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.<Integer>emptyList());
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.retainAll(Collections.singleton(1));
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, 0);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
try {
list.setInt(0, 0);
assertWithMessage("expected exception").fail();
} catch (UnsupportedOperationException e) {
// expected
}
}
private static IntArrayList newImmutableIntArrayList(int... elements) {
IntArrayList list = new IntArrayList();
for (int element : elements) {
list.addInt(element);
}
list.makeImmutable();
return list;
}
}
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