/*
* Copyright 2002-2017 the original author or 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 org.springframework.cache.caffeine;
import com.github.benmanes.caffeine.cache.Caffeine;
import org.junit.Before;
import org.junit.Test;
import org.springframework.cache.AbstractValueAdaptingCacheTests;
import org.springframework.cache.Cache;
import static org.junit.Assert.*;
/**
* @author Ben Manes
* @author Stephane Nicoll
*/
public class CaffeineCacheTests extends AbstractValueAdaptingCacheTests<CaffeineCache> {
private com.github.benmanes.caffeine.cache.Cache<Object, Object> nativeCache;
private CaffeineCache cache;
private CaffeineCache cacheNoNull;
@Before
public void setUp() {
nativeCache = Caffeine.newBuilder().build();
cache = new CaffeineCache(CACHE_NAME, nativeCache);
com.github.benmanes.caffeine.cache.Cache<Object, Object> nativeCacheNoNull
= Caffeine.newBuilder().build();
cacheNoNull = new CaffeineCache(CACHE_NAME_NO_NULL, nativeCacheNoNull, false);
}
@Override
protected CaffeineCache getCache() {
return getCache(true);
}
@Override
protected CaffeineCache getCache(boolean allowNull) {
return allowNull ? this.cache : this.cacheNoNull;
}
@Override
protected Object getNativeCache() {
return nativeCache;
}
@Test
public void testPutIfAbsentNullValue() throws Exception {
CaffeineCache cache = getCache();
Object key = new Object();
Object value = null;
assertNull(cache.get(key));
assertNull(cache.putIfAbsent(key, value));
assertEquals(value, cache.get(key).get());
Cache.ValueWrapper wrapper = cache.putIfAbsent(key, "anotherValue");
assertNotNull(wrapper); // A value is set but is 'null'
assertEquals(null, wrapper.get());
assertEquals(value, cache.get(key).get()); // not changed
}
}