| /* |
| * Copyright (C) 2007 The Guava Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.common.collect; |
| |
| import java.util.ArrayDeque; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Queue; |
| import junit.framework.TestCase; |
| |
| /** |
| * Tests for {@link Synchronized#queue} and {@link Queues#synchronizedQueue}. |
| * |
| * @author Kurt Alfred Kluever |
| */ |
| public class SynchronizedQueueTest extends TestCase { |
| |
| protected Queue<String> create() { |
| TestQueue<String> inner = new TestQueue<>(); |
| Queue<String> outer = Synchronized.queue(inner, null); |
| inner.mutex = outer; |
| outer.add("foo"); // necessary because we try to remove elements later on |
| return outer; |
| } |
| |
| private static final class TestQueue<E> implements Queue<E> { |
| private final Queue<E> delegate = Lists.newLinkedList(); |
| public Object mutex; |
| |
| @Override |
| public boolean offer(E o) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.offer(o); |
| } |
| |
| @Override |
| public E poll() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.poll(); |
| } |
| |
| @Override |
| public E remove() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.remove(); |
| } |
| |
| @Override |
| public boolean remove(Object object) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.remove(object); |
| } |
| |
| @Override |
| public E peek() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.peek(); |
| } |
| |
| @Override |
| public E element() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.element(); |
| } |
| |
| @Override |
| public Iterator<E> iterator() { |
| // We explicitly don't lock for iterator() |
| assertFalse(Thread.holdsLock(mutex)); |
| return delegate.iterator(); |
| } |
| |
| @Override |
| public int size() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.size(); |
| } |
| |
| @Override |
| public boolean removeAll(Collection<?> collection) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.removeAll(collection); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.isEmpty(); |
| } |
| |
| @Override |
| public boolean contains(Object object) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.contains(object); |
| } |
| |
| @Override |
| public boolean add(E element) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.add(element); |
| } |
| |
| @Override |
| public boolean containsAll(Collection<?> collection) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.containsAll(collection); |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends E> collection) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.addAll(collection); |
| } |
| |
| @Override |
| public boolean retainAll(Collection<?> collection) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.retainAll(collection); |
| } |
| |
| @Override |
| public void clear() { |
| assertTrue(Thread.holdsLock(mutex)); |
| delegate.clear(); |
| } |
| |
| @Override |
| public Object[] toArray() { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.toArray(); |
| } |
| |
| @Override |
| public <T> T[] toArray(T[] array) { |
| assertTrue(Thread.holdsLock(mutex)); |
| return delegate.toArray(array); |
| } |
| |
| private static final long serialVersionUID = 0; |
| } |
| |
| public void testHoldsLockOnAllOperations() { |
| create().element(); |
| create().offer("foo"); |
| create().peek(); |
| create().poll(); |
| create().remove(); |
| create().add("foo"); |
| create().addAll(ImmutableList.of("foo")); |
| create().clear(); |
| create().contains("foo"); |
| create().containsAll(ImmutableList.of("foo")); |
| create().equals(new ArrayDeque<>(ImmutableList.of("foo"))); |
| create().hashCode(); |
| create().isEmpty(); |
| create().iterator(); |
| create().remove("foo"); |
| create().removeAll(ImmutableList.of("foo")); |
| create().retainAll(ImmutableList.of("foo")); |
| create().size(); |
| create().toArray(); |
| create().toArray(new String[] {"foo"}); |
| } |
| } |