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   * Licensed to the Apache Software Foundation (ASF) under one
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   * distributed with 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
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  package com.datastax.oss.driver.internal.core.loadbalancing;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.mockito.Mockito.when;
  
  import com.datastax.oss.driver.api.core.config.DefaultDriverOption;
  import com.datastax.oss.driver.shaded.guava.common.collect.ImmutableSet;
  import java.util.Optional;
  import org.junit.Before;
  import org.junit.runner.RunWith;
  import org.mockito.junit.MockitoJUnitRunner;
  
  // TODO fix unnecessary stubbing of config option in parent class (and stop using "silent" runner)
  @RunWith(MockitoJUnitRunner.Silent.class)
  public class BasicLoadBalancingPolicyDcAgnosticTest extends BasicLoadBalancingPolicyQueryPlanTest {
  
    @Before
    @Override
    public void setup() {
      super.setup();
      when(defaultProfile.isDefined(DefaultDriverOption.LOAD_BALANCING_LOCAL_DATACENTER))
          .thenReturn(false);
      when(metadataManager.getContactPoints()).thenReturn(ImmutableSet.of(node1));
      when(metadataManager.getMetadata()).thenReturn(metadata);
      when(metadata.getTokenMap()).thenAnswer(invocation -> Optional.of(this.tokenMap));
  
      // since there is no local datacenter defined, the policy should behave with DC awareness
      // disabled and pick nodes regardless of their datacenters; we therefore expect all tests of
      // BasicLoadBalancingPolicyQueryPlanTest to pass even with the below DC distribution.
      when(node1.getDatacenter()).thenReturn("dc1");
      when(node2.getDatacenter()).thenReturn("dc2");
      when(node3.getDatacenter()).thenReturn("dc3");
      when(node4.getDatacenter()).thenReturn("dc4");
      when(node5.getDatacenter()).thenReturn(null);
  
      policy = createAndInitPolicy();
  
      assertThat(policy.getLiveNodes().dc(null)).containsExactly(node1, node2, node3, node4, node5);
      assertThat(policy.getLiveNodes().dcs()).isEmpty();
    }
  }
  