/*
* Copyright 2016 Ben Manes. All Rights Reserved.
*
* 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.github.benmanes.caffeine.jcache.integration;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.anEmptyMap;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.nullValue;
import java.util.Collections;
import java.util.Map;
import java.util.function.Supplier;
import javax.cache.integration.CacheLoader;
import javax.cache.integration.CacheLoaderException;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.github.benmanes.caffeine.jcache.AbstractJCacheTest;
import com.github.benmanes.caffeine.jcache.configuration.CaffeineConfiguration;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
/**
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class CacheLoaderTest extends AbstractJCacheTest {
private Supplier<Map<Integer, Integer>> loadAllSupplier;
private Supplier<Integer> loadSupplier;
@BeforeMethod
public void beforeMethod() {
loadSupplier = () -> { throw new UnsupportedOperationException(); };
loadAllSupplier = () -> { throw new UnsupportedOperationException(); };
}
@Test
public void load() {
loadSupplier = () -> -1;
assertThat(jcacheLoading.get(1), is(-1));
}
@Test
public void load_null() {
loadSupplier = () -> null;
assertThat(jcacheLoading.get(1), is(nullValue()));
}
@Test
public void load_failure() {
try {
loadSupplier = () -> { throw new IllegalStateException(); };
jcacheLoading.get(1);
Assert.fail();
} catch (CacheLoaderException e) {
assertThat(e.getCause(), instanceOf(IllegalStateException.class));
}
}
@Test
public void loadAll() {
loadAllSupplier = () -> ImmutableMap.of(1, -1, 2, -2, 3, -3);
Map<Integer, Integer> result = jcacheLoading.getAll(ImmutableSet.of(1, 2, 3));
assertThat(result, is(equalTo(loadAllSupplier.get())));
}
@Test(expectedExceptions = CacheLoaderException.class)
public void loadAll_null() {
loadAllSupplier = () -> null;
jcacheLoading.getAll(ImmutableSet.of(1, 2, 3));
}
@Test
public void loadAll_nullMapping() {
loadAllSupplier = () -> Collections.singletonMap(1, null);
Map<Integer, Integer> result = jcacheLoading.getAll(ImmutableSet.of(1, 2, 3));
assertThat(result, is(anEmptyMap()));
}
@Override protected CaffeineConfiguration<Integer, Integer> getConfiguration() {
return new CaffeineConfiguration<>();
}
@Override protected CacheLoader<Integer, Integer> getCacheLoader() {
return new CacheLoader<Integer, Integer>() {
@Override public Integer load(Integer key) {
return loadSupplier.get();
}
@Override public Map<Integer, Integer> loadAll(Iterable<? extends Integer> keys) {
return loadAllSupplier.get();
}
};
}
}