@GwtIncompatible("CacheTesting")
public void testSizingDefaults() {
LoadingCache<?, ?> cache = CacheBuilder.newBuilder().build(identityLoader());
LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);
assertEquals(4, map.segments.length); // concurrency level
assertEquals(4, map.segments[0].table.length()); // capacity / conc level
}
@GwtIncompatible("CacheTesting")
public void testConcurrencyLevel_small() {
LoadingCache<?, ?> cache =
CacheBuilder.newBuilder().concurrencyLevel(1).build(identityLoader());
LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);
assertEquals(1, map.segments.length);
}
@GwtIncompatible("CacheTesting")
public void testInitialCapacity_small() {
LoadingCache<?, ?> cache = CacheBuilder.newBuilder().initialCapacity(5).build(identityLoader());
LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);
assertEquals(4, map.segments.length);
assertEquals(2, map.segments[0].table.length());
assertEquals(2, map.segments[1].table.length());
assertEquals(2, map.segments[2].table.length());
assertEquals(2, map.segments[3].table.length());
}
@GwtIncompatible("CacheTesting")
public void testInitialCapacity_smallest() {
LoadingCache<?, ?> cache = CacheBuilder.newBuilder().initialCapacity(0).build(identityLoader());
LocalCache<?, ?> map = CacheTesting.toLocalCache(cache);
assertEquals(4, map.segments.length);
// 1 is as low as it goes, not 0. it feels dirty to know this/test this.
assertEquals(1, map.segments[0].table.length());
assertEquals(1, map.segments[1].table.length());
assertEquals(1, map.segments[2].table.length());
assertEquals(1, map.segments[3].table.length());
}
@GwtIncompatible("removalListener")
public void testNullCache() {
CountingRemovalListener<Object, Object> listener = countingRemovalListener();
LoadingCache<Object, Object> nullCache =
new CacheBuilder<Object, Object>()
.maximumSize(0)
.removalListener(listener)
.build(identityLoader());
assertEquals(0, nullCache.size());
Object key = new Object();
assertSame(key, nullCache.getUnchecked(key));
assertEquals(1, listener.getCount());
assertEquals(0, nullCache.size());
CacheTesting.checkEmpty(nullCache.asMap());
}
