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   * Licensed to the Apache Software Foundation (ASF) under one or more
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   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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,
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   * See the License for the specific language governing permissions and
   * limitations under the License.
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  package org.apache.activemq.artemis.tests.unit.core.server.cluster.impl;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.function.IntFunction;
  
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.core.server.Queue;
  import org.apache.activemq.artemis.core.server.cluster.impl.MessageLoadBalancingType;
  import org.apache.activemq.artemis.core.server.cluster.impl.RemoteQueueBindingImpl;
  import org.apache.activemq.artemis.tests.unit.core.postoffice.impl.fakes.FakeQueue;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.apache.activemq.artemis.utils.RandomUtil;
  import org.junit.jupiter.api.Test;
  
  public class RemoteQueueBindImplTest extends ActiveMQTestBase {
  
     private void testAddRemoveConsumerWithFilter(IntFunction<SimpleString> filterFactory,
                                                  int size,
                                                  int expectedSize) throws Exception {
        final long id = RandomUtil.randomLong();
        final SimpleString address = RandomUtil.randomUUIDSimpleString();
        final SimpleString uniqueName = RandomUtil.randomUUIDSimpleString();
        final SimpleString routingName = RandomUtil.randomUUIDSimpleString();
        final Long remoteQueueID = RandomUtil.randomLong();
        final SimpleString filterString = SimpleString.of("A>B");
        final Queue storeAndForwardQueue = new FakeQueue(null);
        final SimpleString bridgeName = RandomUtil.randomUUIDSimpleString();
        final int distance = 0;
        RemoteQueueBindingImpl binding = new RemoteQueueBindingImpl(id, address, uniqueName, routingName, remoteQueueID, filterString, storeAndForwardQueue, bridgeName, distance, MessageLoadBalancingType.ON_DEMAND);
  
        final List<SimpleString> filters = new ArrayList<>(size);
        for (int i = 0; i < size; i++) {
           final SimpleString filter = filterFactory.apply(i);
           filters.add(filter);
           binding.addConsumer(filter);
        }
  
        assertEquals(expectedSize, binding.getFilters().size());
  
        for (int i = 0; i < size; i++) {
           binding.removeConsumer(filters.get(i));
        }
  
        assertEquals(0, binding.getFilters().size());
     }
  
     @Test
     public void testAddRemoveConsumer() throws Exception {
        testAddRemoveConsumerWithFilter(i -> SimpleString.of("B" + i + "<A"), 100, 100);
     }
  
     @Test
     public void testAddRemoveConsumerUsingSameFilter() throws Exception {
        testAddRemoveConsumerWithFilter(i -> SimpleString.of("B" + 0 + "<A"), 100, 1);
     }
  
     @Test
     public void testAddRemoveConsumerUsingEmptyFilters() throws Exception {
        testAddRemoveConsumerWithFilter(i -> SimpleString.of(""), 1, 0);
     }
  
     @Test
     public void testAddRemoveConsumerUsingNullFilters() throws Exception {
        testAddRemoveConsumerWithFilter(i -> null, 1, 0);
     }
  
     @Test
     public void testIsHighAcceptPriority() throws Exception {
        final long id = RandomUtil.randomLong();
        final SimpleString address = RandomUtil.randomUUIDSimpleString();
        final SimpleString uniqueName = RandomUtil.randomUUIDSimpleString();
        final SimpleString routingName = RandomUtil.randomUUIDSimpleString();
        final Long remoteQueueID = RandomUtil.randomLong();
        final SimpleString filterString = SimpleString.of("A>B");
        final Queue storeAndForwardQueue = new FakeQueue(null);
        final SimpleString bridgeName = RandomUtil.randomUUIDSimpleString();
        final int distance = 0;
        RemoteQueueBindingImpl bindingOff = new RemoteQueueBindingImpl(id, address, uniqueName, routingName, remoteQueueID, filterString, storeAndForwardQueue, bridgeName, distance, MessageLoadBalancingType.OFF);
        bindingOff.addConsumer(null);
        assertFalse(bindingOff.isHighAcceptPriority(null));
  
        RemoteQueueBindingImpl bindingOffWithRedistribution = new RemoteQueueBindingImpl(id, address, uniqueName, routingName, remoteQueueID, filterString, storeAndForwardQueue, bridgeName, distance, MessageLoadBalancingType.OFF_WITH_REDISTRIBUTION);
        bindingOffWithRedistribution.addConsumer(null);
        // not really intuitive, but via getNextBinding (initial routing) BindingsImpl.matchBinding() traps remote bindings
        // with OFF_WITH_REDISTRIBUTION which makes the need for change in isHighAcceptPriority redundant
        // and ensures that redistribution can occur as isHighAcceptPriority is invoked from redistribute
        assertTrue(bindingOffWithRedistribution.isHighAcceptPriority(null));
     }
  }
  