text: /*
   * Copyright (c) 2008-2020, 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.map.impl.querycache.utils;
  
  import com.hazelcast.core.HazelcastInstance;
  import com.hazelcast.map.impl.MapService;
  import com.hazelcast.map.impl.querycache.NodeQueryCacheContext;
  import com.hazelcast.map.impl.querycache.QueryCacheContext;
  import com.hazelcast.map.impl.querycache.accumulator.Accumulator;
  import com.hazelcast.test.HazelcastParallelClassRunner;
  import com.hazelcast.test.HazelcastTestSupport;
  import com.hazelcast.test.annotation.ParallelJVMTest;
  import com.hazelcast.test.annotation.QuickTest;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  import org.junit.runner.RunWith;
  
  import java.util.Map;
  
  import static com.hazelcast.map.impl.querycache.utils.QueryCacheUtil.getAccumulatorOrNull;
  import static com.hazelcast.map.impl.querycache.utils.QueryCacheUtil.getAccumulators;
  import static com.hazelcast.test.Accessors.getNodeEngineImpl;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  
  @RunWith(HazelcastParallelClassRunner.class)
  @Category({QuickTest.class, ParallelJVMTest.class})
  public class QueryCacheUtilTest extends HazelcastTestSupport {
  
      private QueryCacheContext context;
  
      @Before
      public void setUp() {
          HazelcastInstance instance = createHazelcastInstance();
          MapService mapService = getNodeEngineImpl(instance).getService(MapService.SERVICE_NAME);
  
          context = new NodeQueryCacheContext(mapService.getMapServiceContext());
      }
  
      @Test
      public void testConstructor() {
          assertUtilityConstructor(QueryCacheUtil.class);
      }
  
      @Test
      public void getAccumulators_whenNoAccumulatorsRegistered_thenReturnEmptyMap() {
          Map<Integer, Accumulator> accumulators = getAccumulators(context, "myMap", "myCache");
  
          assertNotNull(accumulators);
          assertEquals(0, accumulators.size());
      }
  
      @Test
      public void getAccumulatorOrNull_whenNoAccumulatorsRegistered_thenReturnNull() {
          Accumulator accumulator = getAccumulatorOrNull(context, "myMap", "myCache", -1);
  
          assertNull(accumulator);
      }
  }
  