1 files changed, 70 insertions, 0 deletions
diff --git a/spring-context-support/src/test/java/org/springframework/cache/caffeine/CaffeineCacheTests.java b/spring-context-support/src/test/java/org/springframework/cache/caffeine/CaffeineCacheTests.java
new file mode 100644
index 00000000..5ede180c
--- /dev/null
+++ b/spring-context-support/src/test/java/org/springframework/cache/caffeine/CaffeineCacheTests.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2002-2015 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.AbstractCacheTests;
+import org.springframework.cache.Cache;
+
+import static org.junit.Assert.*;
+
+/**
+ * @author Ben Manes
+ * @author Stephane Nicoll
+ */
+public class CaffeineCacheTests extends AbstractCacheTests<CaffeineCache> {
+
+	private com.github.benmanes.caffeine.cache.Cache<Object, Object> nativeCache;
+
+	private CaffeineCache cache;
+
+	@Before
+	public void setUp() {
+		nativeCache = Caffeine.newBuilder().build();
+		cache = new CaffeineCache(CACHE_NAME, nativeCache);
+	}
+
+	@Override
+	protected CaffeineCache getCache() {
+		return cache;
+	}
+
+	@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
+	}
+
+}