@Test
public void testValueUniqueObject() throws Exception {
OnHeapStore<Serializable, Serializable> store = newStore();
String key = "key";
List<String> value = new ArrayList<String>();
value.add("value");
store.put(key, (Serializable) value);
// mutate the value -- should not affect cache
value.clear();
ValueHolder<Serializable> valueHolder = store.get(key);
if (valueHolder.value() == value
|| !valueHolder.value().equals(Collections.singletonList("value"))) {
throw new AssertionError();
}
}
@Test
public void testKeyCopierCalledOnGetOrComputeIfAbsent() throws Exception {
LongCopier keyCopier = new LongCopier();
OnHeapStore<Long, Long> store =
newStore(
SystemTimeSource.INSTANCE,
Expirations.noExpiration(),
Eviction.none(),
keyCopier,
new SerializingCopier<Long>(
new CompactJavaSerializer<Long>(ClassLoader.getSystemClassLoader())),
100);
ValueHolder<Long> computed =
store.getOrComputeIfAbsent(
1L,
new Function<Long, ValueHolder<Long>>() {
@Override
public ValueHolder<Long> apply(final Long key) {
return new AbstractValueHolder<Long>(-1, -1) {
@Override
public Long value() {
return key * 1000L;
}
@Override
protected TimeUnit nativeTimeUnit() {
return TimeUnit.MILLISECONDS;
}
};
}
});
assertThat(computed.value(), is(1000L));
assertThat(keyCopier.copyForWriteCount, is(1));
assertThat(keyCopier.copyForReadCount, is(0));
}