/*
* Copyright (C) 2010 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 com.google.common.collect.Synchronized.SynchronizedNavigableSet;
import com.google.common.collect.Synchronized.SynchronizedSortedSet;
import com.google.common.collect.testing.NavigableSetTestSuiteBuilder;
import com.google.common.collect.testing.SafeTreeSet;
import com.google.common.collect.testing.TestStringSortedSetGenerator;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import java.util.NavigableSet;
import java.util.SortedSet;
import java.util.TreeSet;
/**
* Tests for {@link Sets#synchronizedNavigableSet(NavigableSet)}.
*
* @author Louis Wasserman
*/
public class SynchronizedNavigableSetTest extends TestCase {
private static final Object MUTEX = new Integer(1); // something Serializable
@SuppressWarnings("unchecked")
protected <E> NavigableSet<E> create() {
TestSet<E> inner = new TestSet<E>(
new TreeSet<E>((Comparator<E>) Ordering.natural().nullsFirst()), MUTEX);
NavigableSet<E> outer =
Synchronized.navigableSet(inner, MUTEX);
return outer;
}
static class TestSet<E> extends SynchronizedSetTest.TestSet<E>
implements NavigableSet<E> {
TestSet(NavigableSet<E> delegate, Object mutex) {
super(delegate, mutex);
}
@Override protected NavigableSet<E> delegate() {
return (NavigableSet<E>) super.delegate();
}
@Override public E ceiling(E e) {
assertTrue(Thread.holdsLock(mutex));
return delegate().ceiling(e);
}
@Override public Iterator<E> descendingIterator() {
return delegate().descendingIterator();
}
@Override public NavigableSet<E> descendingSet() {
assertTrue(Thread.holdsLock(mutex));
return delegate().descendingSet();
}
@Override public E floor(E e) {
assertTrue(Thread.holdsLock(mutex));
return delegate().floor(e);
}
@Override public NavigableSet<E> headSet(E toElement, boolean inclusive) {
assertTrue(Thread.holdsLock(mutex));
return delegate().headSet(toElement, inclusive);
}
@Override public SortedSet<E> headSet(E toElement) {
return headSet(toElement, false);
}
@Override public E higher(E e) {
assertTrue(Thread.holdsLock(mutex));
return delegate().higher(e);
}
@Override public E lower(E e) {
return delegate().lower(e);
}
@Override public E pollFirst() {
assertTrue(Thread.holdsLock(mutex));
return delegate().pollFirst();
}
@Override public E pollLast() {
assertTrue(Thread.holdsLock(mutex));
return delegate().pollLast();
}
@Override public NavigableSet<E> subSet(E fromElement,
boolean fromInclusive, E toElement, boolean toInclusive) {
assertTrue(Thread.holdsLock(mutex));
return delegate().subSet(
fromElement, fromInclusive, toElement, toInclusive);
}
@Override public SortedSet<E> subSet(E fromElement, E toElement) {
return subSet(fromElement, true, toElement, false);
}
@Override public NavigableSet<E> tailSet(E fromElement, boolean inclusive) {
assertTrue(Thread.holdsLock(mutex));
return delegate().tailSet(fromElement, inclusive);
}
@Override public SortedSet<E> tailSet(E fromElement) {
return tailSet(fromElement, true);
}
@Override public Comparator<? super E> comparator() {
assertTrue(Thread.holdsLock(mutex));
return delegate().comparator();
}
@Override public E first() {
assertTrue(Thread.holdsLock(mutex));
return delegate().first();
}
@Override public E last() {
assertTrue(Thread.holdsLock(mutex));
return delegate().last();
}
private static final long serialVersionUID = 0;
}
public static TestSuite suite() {
TestSuite suite = new TestSuite();
suite.addTestSuite(SynchronizedNavigableSetTest.class);
suite.addTest(
NavigableSetTestSuiteBuilder.using(new TestStringSortedSetGenerator() {
@Override protected NavigableSet<String> create(String[] elements) {
NavigableSet<String> innermost = new SafeTreeSet<String>();
Collections.addAll(innermost, elements);
TestSet<String> inner = new TestSet<String>(innermost, MUTEX);
NavigableSet<String> outer =
Synchronized.navigableSet(inner, MUTEX);
return outer;
}
@Override public List<String> order(List<String> insertionOrder) {
return Ordering.natural().sortedCopy(insertionOrder);
}
}).named("Sets.synchronizedNavigableSet[SafeTreeSet]")
.withFeatures(CollectionSize.ANY, CollectionFeature.KNOWN_ORDER,
CollectionFeature.GENERAL_PURPOSE, CollectionFeature.SERIALIZABLE)
.createTestSuite());
return suite;
}
public void testDescendingSet() {
NavigableSet<String> map = create();
NavigableSet<String> descendingSet = map.descendingSet();
assertTrue(descendingSet instanceof SynchronizedNavigableSet);
assertSame(MUTEX, ((SynchronizedNavigableSet<String>) descendingSet).mutex);
}
public void testHeadSet_E() {
NavigableSet<String> map = create();
SortedSet<String> headSet = map.headSet("a");
assertTrue(headSet instanceof SynchronizedSortedSet);
assertSame(MUTEX, ((SynchronizedSortedSet<String>) headSet).mutex);
}
public void testHeadSet_E_B() {
NavigableSet<String> map = create();
NavigableSet<String> headSet = map.headSet("a", true);
assertTrue(headSet instanceof SynchronizedNavigableSet);
assertSame(MUTEX, ((SynchronizedNavigableSet<String>) headSet).mutex);
}
public void testSubSet_E_E() {
NavigableSet<String> map = create();
SortedSet<String> subSet = map.subSet("a", "b");
assertTrue(subSet instanceof SynchronizedSortedSet);
assertSame(MUTEX, ((SynchronizedSortedSet<String>) subSet).mutex);
}
public void testSubSet_E_B_E_B() {
NavigableSet<String> map = create();
NavigableSet<String> subSet = map.subSet("a", false, "b", true);
assertTrue(subSet instanceof SynchronizedNavigableSet);
assertSame(MUTEX, ((SynchronizedNavigableSet<String>) subSet).mutex);
}
public void testTailSet_E() {
NavigableSet<String> map = create();
SortedSet<String> tailSet = map.tailSet("a");
assertTrue(tailSet instanceof SynchronizedSortedSet);
assertSame(MUTEX, ((SynchronizedSortedSet<String>) tailSet).mutex);
}
public void testTailSet_E_B() {
NavigableSet<String> map = create();
NavigableSet<String> tailSet = map.tailSet("a", true);
assertTrue(tailSet instanceof SynchronizedNavigableSet);
assertSame(MUTEX, ((SynchronizedNavigableSet<String>) tailSet).mutex);
}
}