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+// 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,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package com.google.protobuf;
+
+import static java.util.Arrays.asList;
+
+import junit.framework.TestCase;
+
+import java.util.Collections;
+import java.util.ConcurrentModificationException;
+import java.util.Iterator;
+
+/**
+ * Tests for {@link IntArrayList}.
+ *
+ * @author dweis@google.com (Daniel Weis)
+ */
+public class IntArrayListTest extends TestCase {
+
+ private static final IntArrayList UNARY_LIST = newImmutableIntArrayList(1);
+ private static final IntArrayList TERTIARY_LIST =
+ newImmutableIntArrayList(1, 2, 3);
+
+ private IntArrayList list;
+
+ @Override
+ protected void setUp() throws Exception {
+ list = new IntArrayList();
+ }
+
+ public void testEmptyListReturnsSameInstance() {
+ assertSame(IntArrayList.emptyList(), IntArrayList.emptyList());
+ }
+
+ public void testEmptyListIsImmutable() {
+ assertImmutable(IntArrayList.emptyList());
+ }
+
+ public void testMakeImmutable() {
+ list.addInt(2);
+ list.addInt(4);
+ list.addInt(6);
+ list.addInt(8);
+ list.makeImmutable();
+ assertImmutable(list);
+ }
+
+ public void testCopyConstructor() {
+ IntArrayList copy = new IntArrayList(TERTIARY_LIST);
+ assertEquals(TERTIARY_LIST, copy);
+
+ copy = new IntArrayList(IntArrayList.emptyList());
+ assertEquals(IntArrayList.emptyList(), copy);
+
+ copy = new IntArrayList(asList(1, 2, 3));
+ assertEquals(asList(1, 2, 3), copy);
+
+ copy = new IntArrayList(Collections.<Integer>emptyList());
+ assertEquals(IntArrayList.emptyList(), copy);
+ }
+
+ public void testModificationWithIteration() {
+ list.addAll(asList(1, 2, 3, 4));
+ Iterator<Integer> iterator = list.iterator();
+ assertEquals(4, list.size());
+ assertEquals(1, (int) list.get(0));
+ assertEquals(1, (int) iterator.next());
+ list.set(0, 1);
+ assertEquals(2, (int) iterator.next());
+
+ list.remove(0);
+ try {
+ iterator.next();
+ fail();
+ } catch (ConcurrentModificationException e) {
+ // expected
+ }
+
+ iterator = list.iterator();
+ list.add(0, 0);
+ try {
+ iterator.next();
+ fail();
+ } catch (ConcurrentModificationException e) {
+ // expected
+ }
+ }
+
+ public void testGet() {
+ assertEquals(1, (int) TERTIARY_LIST.get(0));
+ assertEquals(2, (int) TERTIARY_LIST.get(1));
+ assertEquals(3, (int) TERTIARY_LIST.get(2));
+
+ try {
+ TERTIARY_LIST.get(-1);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ TERTIARY_LIST.get(3);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ public void testGetInt() {
+ assertEquals(1, TERTIARY_LIST.getInt(0));
+ assertEquals(2, TERTIARY_LIST.getInt(1));
+ assertEquals(3, TERTIARY_LIST.getInt(2));
+
+ try {
+ TERTIARY_LIST.get(-1);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ TERTIARY_LIST.get(3);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ public void testSize() {
+ assertEquals(0, IntArrayList.emptyList().size());
+ assertEquals(1, UNARY_LIST.size());
+ assertEquals(3, TERTIARY_LIST.size());
+
+ list.addInt(2);
+ list.addInt(4);
+ list.addInt(6);
+ list.addInt(8);
+ assertEquals(4, list.size());
+
+ list.remove(0);
+ assertEquals(3, list.size());
+
+ list.add(16);
+ assertEquals(4, list.size());
+ }
+
+ public void testSet() {
+ list.addInt(2);
+ list.addInt(4);
+
+ assertEquals(2, (int) list.set(0, 0));
+ assertEquals(0, list.getInt(0));
+
+ assertEquals(4, (int) list.set(1, 0));
+ assertEquals(0, list.getInt(1));
+
+ try {
+ list.set(-1, 0);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ list.set(2, 0);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ public void testSetInt() {
+ list.addInt(2);
+ list.addInt(4);
+
+ assertEquals(2, list.setInt(0, 0));
+ assertEquals(0, list.getInt(0));
+
+ assertEquals(4, list.setInt(1, 0));
+ assertEquals(0, list.getInt(1));
+
+ try {
+ list.setInt(-1, 0);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ list.setInt(2, 0);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ public void testAdd() {
+ assertEquals(0, list.size());
+
+ assertTrue(list.add(2));
+ assertEquals(asList(2), list);
+
+ assertTrue(list.add(3));
+ list.add(0, 4);
+ assertEquals(asList(4, 2, 3), list);
+
+ 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(5 + i);
+ }
+ assertEquals(asList(0, 1, 4, 2, 3, 5, 6, 7, 8, 9, 10), list);
+
+ try {
+ list.add(-1, 5);
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ list.add(4, 5);
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ public void testAddInt() {
+ assertEquals(0, list.size());
+
+ list.addInt(2);
+ assertEquals(asList(2), list);
+
+ list.addInt(3);
+ assertEquals(asList(2, 3), list);
+ }
+
+ public void testAddAll() {
+ assertEquals(0, list.size());
+
+ assertTrue(list.addAll(Collections.singleton(1)));
+ assertEquals(1, list.size());
+ assertEquals(1, (int) list.get(0));
+ assertEquals(1, list.getInt(0));
+
+ assertTrue(list.addAll(asList(2, 3, 4, 5, 6)));
+ assertEquals(asList(1, 2, 3, 4, 5, 6), list);
+
+ assertTrue(list.addAll(TERTIARY_LIST));
+ assertEquals(asList(1, 2, 3, 4, 5, 6, 1, 2, 3), list);
+
+ assertFalse(list.addAll(Collections.<Integer>emptyList()));
+ assertFalse(list.addAll(IntArrayList.emptyList()));
+ }
+
+ public void testRemove() {
+ list.addAll(TERTIARY_LIST);
+ assertEquals(1, (int) list.remove(0));
+ assertEquals(asList(2, 3), list);
+
+ assertTrue(list.remove(Integer.valueOf(3)));
+ assertEquals(asList(2), list);
+
+ assertFalse(list.remove(Integer.valueOf(3)));
+ assertEquals(asList(2), list);
+
+ assertEquals(2, (int) list.remove(0));
+ assertEquals(asList(), list);
+
+ try {
+ list.remove(-1);
+ fail();
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+
+ try {
+ list.remove(0);
+ } catch (IndexOutOfBoundsException e) {
+ // expected
+ }
+ }
+
+ private void assertImmutable(IntArrayList list) {
+ if (list.contains(1)) {
+ throw new RuntimeException("Cannot test the immutability of lists that contain 1.");
+ }
+
+ try {
+ list.add(1);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.add(0, 1);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(Collections.<Integer>emptyList());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(Collections.singletonList(1));
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(new IntArrayList());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(UNARY_LIST);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(0, Collections.singleton(1));
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(0, UNARY_LIST);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addAll(0, Collections.<Integer>emptyList());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.addInt(0);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.clear();
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.remove(1);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.remove(new Object());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.removeAll(Collections.<Integer>emptyList());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.removeAll(Collections.singleton(1));
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.removeAll(UNARY_LIST);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.retainAll(Collections.<Integer>emptyList());
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.retainAll(Collections.singleton(1));
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.retainAll(UNARY_LIST);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.set(0, 0);
+ fail();
+ } catch (UnsupportedOperationException e) {
+ // expected
+ }
+
+ try {
+ list.setInt(0, 0);
+ 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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