/*
* Copyright (c) 2008-2017, Hazelcast, Inc. 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.hazelcast.cache.merge;
import com.hazelcast.cache.CacheEntryView;
import com.hazelcast.cache.CacheMergePolicy;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public abstract class AbstractCacheMergePolicyTest {
private static final String EXISTING = "EXISTING";
private static final String MERGING = "MERGING";
protected CacheMergePolicy policy;
@Before
public void setup() {
policy = createCacheMergePolicy();
}
protected abstract CacheMergePolicy createCacheMergePolicy();
@Test
public void merge_mergingWins() {
CacheEntryView existing = entryWithGivenPropertyAndValue(1, EXISTING);
CacheEntryView merging = entryWithGivenPropertyAndValue(333, MERGING);
assertEquals(MERGING, policy.merge("cache", merging, existing));
}
@Test
public void merge_mergingWins_sinceExistingIsNotExist() {
CacheEntryView existing = null;
CacheEntryView merging = entryWithGivenPropertyAndValue(1, MERGING);
assertEquals(MERGING, policy.merge("cache", merging, existing));
}
@Test
public void merge_existingWins() {
CacheEntryView existing = entryWithGivenPropertyAndValue(333, EXISTING);
CacheEntryView merging = entryWithGivenPropertyAndValue(1, MERGING);
assertEquals(EXISTING, policy.merge("cache", merging, existing));
}
@Test
public void merge_draw_mergingWins() {
CacheEntryView existing = entryWithGivenPropertyAndValue(1, EXISTING);
CacheEntryView merging = entryWithGivenPropertyAndValue(1, MERGING);
assertEquals(MERGING, policy.merge("cache", merging, existing));
}
private CacheEntryView entryWithGivenPropertyAndValue(long testedProperty, String value) {
CacheEntryView entryView = mock(CacheEntryView.class);
try {
if (policy instanceof HigherHitsCacheMergePolicy) {
when(entryView.getAccessHit()).thenReturn(testedProperty);
} else if (policy instanceof LatestAccessCacheMergePolicy) {
when(entryView.getLastAccessTime()).thenReturn(testedProperty);
}
when(entryView.getValue()).thenReturn(value);
return entryView;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}