| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Written by Doug Lea and Martin Buchholz with assistance from |
| * members of JCP JSR-166 Expert Group and released to the public |
| * domain, as explained at |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| */ |
| |
| import java.util.ArrayDeque; |
| import java.util.Collections; |
| import java.util.Spliterator; |
| |
| import junit.framework.Test; |
| |
| public class ArrayDeque8Test extends JSR166TestCase { |
| public static void main(String[] args) { |
| main(suite(), args); |
| } |
| |
| public static Test suite() { |
| return newTestSuite(ArrayDeque8Test.class); |
| } |
| |
| /** |
| * Spliterator.getComparator always throws IllegalStateException |
| */ |
| public void testSpliterator_getComparator() { |
| assertThrows(IllegalStateException.class, |
| () -> new ArrayDeque().spliterator().getComparator()); |
| } |
| |
| /** |
| * Spliterator characteristics are as advertised |
| */ |
| public void testSpliterator_characteristics() { |
| ArrayDeque q = new ArrayDeque(); |
| Spliterator s = q.spliterator(); |
| int characteristics = s.characteristics(); |
| int required = Spliterator.NONNULL |
| | Spliterator.ORDERED |
| | Spliterator.SIZED |
| | Spliterator.SUBSIZED; |
| assertEquals(required, characteristics & required); |
| assertTrue(s.hasCharacteristics(required)); |
| assertEquals(0, characteristics |
| & (Spliterator.CONCURRENT |
| | Spliterator.DISTINCT |
| | Spliterator.IMMUTABLE |
| | Spliterator.SORTED)); |
| } |
| |
| /** |
| * Handle capacities near Integer.MAX_VALUE. |
| * ant -Dvmoptions='-Xms28g -Xmx28g' -Djsr166.expensiveTests=true -Djsr166.tckTestClass=ArrayDeque8Test -Djsr166.methodFilter=testHugeCapacity tck |
| */ |
| public void testHugeCapacity() { |
| if (! (testImplementationDetails |
| && expensiveTests |
| && Runtime.getRuntime().maxMemory() > 24L * (1 << 30))) |
| return; |
| |
| final Integer e = 42; |
| final int maxArraySize = Integer.MAX_VALUE - 8; |
| |
| assertThrows(OutOfMemoryError.class, |
| () -> new ArrayDeque(Integer.MAX_VALUE)); |
| |
| { |
| ArrayDeque q = new ArrayDeque(maxArraySize - 1); |
| assertEquals(0, q.size()); |
| assertTrue(q.isEmpty()); |
| q = null; |
| } |
| |
| { |
| ArrayDeque q = new ArrayDeque(); |
| assertTrue(q.addAll(Collections.nCopies(maxArraySize - 3, e))); |
| assertEquals(e, q.peekFirst()); |
| assertEquals(e, q.peekLast()); |
| assertEquals(maxArraySize - 3, q.size()); |
| q.addFirst((Integer) 0); |
| q.addLast((Integer) 1); |
| assertEquals((Integer) 0, q.peekFirst()); |
| assertEquals((Integer) 1, q.peekLast()); |
| assertEquals(maxArraySize - 1, q.size()); |
| |
| ArrayDeque qq = q; |
| ArrayDeque smallish = new ArrayDeque( |
| Collections.nCopies(Integer.MAX_VALUE - q.size() + 1, e)); |
| assertThrows( |
| IllegalStateException.class, |
| () -> qq.addAll(qq), |
| () -> qq.addAll(smallish), |
| () -> smallish.addAll(qq)); |
| } |
| } |
| |
| } |