| /* |
| * 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 static java.util.Arrays.asList; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.testing.QueueTestSuiteBuilder; |
| import com.google.common.collect.testing.TestStringQueueGenerator; |
| import com.google.common.collect.testing.features.CollectionFeature; |
| import com.google.common.collect.testing.features.CollectionSize; |
| import com.google.common.testing.ForwardingWrapperTester; |
| import java.util.Collection; |
| import java.util.Queue; |
| import junit.framework.Test; |
| import junit.framework.TestCase; |
| import junit.framework.TestSuite; |
| |
| /** |
| * Tests for {@code ForwardingQueue}. |
| * |
| * @author Robert Konigsberg |
| * @author Louis Wasserman |
| */ |
| public class ForwardingQueueTest extends TestCase { |
| |
| static final class StandardImplForwardingQueue<T> extends ForwardingQueue<T> { |
| private final Queue<T> backingQueue; |
| |
| StandardImplForwardingQueue(Queue<T> backingQueue) { |
| this.backingQueue = backingQueue; |
| } |
| |
| @Override |
| protected Queue<T> delegate() { |
| return backingQueue; |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends T> collection) { |
| return standardAddAll(collection); |
| } |
| |
| @Override |
| public void clear() { |
| standardClear(); |
| } |
| |
| @Override |
| public boolean contains(Object object) { |
| return standardContains(object); |
| } |
| |
| @Override |
| public boolean containsAll(Collection<?> collection) { |
| return standardContainsAll(collection); |
| } |
| |
| @Override |
| public boolean remove(Object object) { |
| return standardRemove(object); |
| } |
| |
| @Override |
| public boolean removeAll(Collection<?> collection) { |
| return standardRemoveAll(collection); |
| } |
| |
| @Override |
| public boolean retainAll(Collection<?> collection) { |
| return standardRetainAll(collection); |
| } |
| |
| @Override |
| public Object[] toArray() { |
| return standardToArray(); |
| } |
| |
| @Override |
| public <T> T[] toArray(T[] array) { |
| return standardToArray(array); |
| } |
| |
| @Override |
| public String toString() { |
| return standardToString(); |
| } |
| |
| @Override |
| public boolean offer(T o) { |
| return standardOffer(o); |
| } |
| |
| @Override |
| public T peek() { |
| return standardPeek(); |
| } |
| |
| @Override |
| public T poll() { |
| return standardPoll(); |
| } |
| } |
| |
| public static Test suite() { |
| TestSuite suite = new TestSuite(); |
| |
| suite.addTestSuite(ForwardingQueueTest.class); |
| suite.addTest( |
| QueueTestSuiteBuilder.using( |
| new TestStringQueueGenerator() { |
| |
| @Override |
| protected Queue<String> create(String[] elements) { |
| return new StandardImplForwardingQueue<>(Lists.newLinkedList(asList(elements))); |
| } |
| }) |
| .named("ForwardingQueue[LinkedList] with standard implementations") |
| .withFeatures( |
| CollectionSize.ANY, |
| CollectionFeature.ALLOWS_NULL_VALUES, |
| CollectionFeature.GENERAL_PURPOSE) |
| .createTestSuite()); |
| |
| return suite; |
| } |
| |
| @SuppressWarnings({"rawtypes", "unchecked"}) |
| public void testForwarding() { |
| new ForwardingWrapperTester() |
| .testForwarding( |
| Queue.class, |
| new Function<Queue, Queue>() { |
| @Override |
| public Queue apply(Queue delegate) { |
| return wrap(delegate); |
| } |
| }); |
| } |
| |
| private static <T> Queue<T> wrap(final Queue<T> delegate) { |
| return new ForwardingQueue<T>() { |
| @Override |
| protected Queue<T> delegate() { |
| return delegate; |
| } |
| }; |
| } |
| } |