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/*
* 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 com.google.common.base.Preconditions.checkArgument;
import com.google.common.collect.Synchronized.SynchronizedBiMap;
import com.google.common.collect.Synchronized.SynchronizedSet;
import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import com.google.common.collect.testing.features.MapFeature;
import com.google.common.collect.testing.google.BiMapInverseTester;
import com.google.common.collect.testing.google.BiMapTestSuiteBuilder;
import com.google.common.collect.testing.google.TestStringBiMapGenerator;
import java.util.Map.Entry;
import java.util.Set;
import java.util.function.BiFunction;
import junit.framework.TestSuite;
/**
* Tests for {@code Synchronized#biMap}.
*
* @author Mike Bostock
*/
public class SynchronizedBiMapTest extends SynchronizedMapTest {
public static TestSuite suite() {
TestSuite suite = new TestSuite(SynchronizedBiMapTest.class);
suite.addTest(
BiMapTestSuiteBuilder.using(new SynchTestingBiMapGenerator())
.named("Synchronized.biMap[TestBiMap]")
.withFeatures(
CollectionSize.ANY,
CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
MapFeature.ALLOWS_NULL_KEYS,
MapFeature.ALLOWS_NULL_VALUES,
MapFeature.ALLOWS_ANY_NULL_QUERIES,
MapFeature.GENERAL_PURPOSE,
MapFeature.REJECTS_DUPLICATES_AT_CREATION)
.createTestSuite());
suite.addTest(
BiMapTestSuiteBuilder.using(new SynchronizedHashBiMapGenerator())
.named("synchronizedBiMap[HashBiMap]")
.withFeatures(
CollectionSize.ANY,
CollectionFeature.SUPPORTS_ITERATOR_REMOVE,
MapFeature.ALLOWS_NULL_KEYS,
MapFeature.ALLOWS_NULL_VALUES,
MapFeature.ALLOWS_ANY_NULL_QUERIES,
MapFeature.GENERAL_PURPOSE,
MapFeature.REJECTS_DUPLICATES_AT_CREATION,
CollectionFeature.SERIALIZABLE)
.suppressing(BiMapInverseTester.getInverseSameAfterSerializingMethods())
.createTestSuite());
return suite;
}
@Override
protected <K, V> BiMap<K, V> create() {
TestBiMap<K, V> inner = new TestBiMap<>(HashBiMap.<K, V>create(), mutex);
BiMap<K, V> outer = Synchronized.biMap(inner, mutex);
return outer;
}
public static final class SynchronizedHashBiMapGenerator extends TestStringBiMapGenerator {
@Override
protected BiMap<String, String> create(Entry<String, String>[] entries) {
Object mutex = new Object();
BiMap<String, String> result = HashBiMap.create();
for (Entry<String, String> entry : entries) {
checkArgument(!result.containsKey(entry.getKey()));
result.put(entry.getKey(), entry.getValue());
}
return Maps.synchronizedBiMap(result);
}
}
public static final class SynchTestingBiMapGenerator extends TestStringBiMapGenerator {
@Override
protected BiMap<String, String> create(Entry<String, String>[] entries) {
Object mutex = new Object();
BiMap<String, String> backing = new TestBiMap<>(HashBiMap.<String, String>create(), mutex);
BiMap<String, String> result = Synchronized.biMap(backing, mutex);
for (Entry<String, String> entry : entries) {
checkArgument(!result.containsKey(entry.getKey()));
result.put(entry.getKey(), entry.getValue());
}
return result;
}
}
static class TestBiMap<K, V> extends TestMap<K, V> implements BiMap<K, V> {
private final BiMap<K, V> delegate;
public TestBiMap(BiMap<K, V> delegate, Object mutex) {
super(delegate, mutex);
this.delegate = delegate;
}
@Override
public V forcePut(K key, V value) {
assertTrue(Thread.holdsLock(mutex));
return delegate.forcePut(key, value);
}
@Override
public BiMap<V, K> inverse() {
assertTrue(Thread.holdsLock(mutex));
return delegate.inverse();
}
@Override
public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) {
assertTrue(Thread.holdsLock(mutex));
delegate.replaceAll(function);
}
@Override
public Set<V> values() {
assertTrue(Thread.holdsLock(mutex));
return delegate.values();
}
private static final long serialVersionUID = 0;
}
public void testForcePut() {
create().forcePut(null, null);
}
public void testInverse() {
BiMap<String, Integer> bimap = create();
BiMap<Integer, String> inverse = bimap.inverse();
assertSame(bimap, inverse.inverse());
assertTrue(inverse instanceof SynchronizedBiMap);
assertSame(mutex, ((SynchronizedBiMap<?, ?>) inverse).mutex);
}
@Override
public void testValues() {
BiMap<String, Integer> map = create();
Set<Integer> values = map.values();
assertTrue(values instanceof SynchronizedSet);
assertSame(mutex, ((SynchronizedSet<?>) values).mutex);
}
}
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