content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * 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,
   * 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.datastax.oss.driver.internal.core.addresstranslation;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.mockito.Mockito.any;
  import static org.mockito.Mockito.anyString;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import java.net.InetAddress;
  import java.net.InetSocketAddress;
  import javax.naming.NamingException;
  import javax.naming.directory.BasicAttributes;
  import javax.naming.directory.InitialDirContext;
  import org.junit.Test;
  
  public class Ec2MultiRegionAddressTranslatorTest {
  
    @Test
    public void should_return_same_address_when_no_entry_found() throws Exception {
      InitialDirContext mock = mock(InitialDirContext.class);
      when(mock.getAttributes(anyString(), any(String[].class))).thenReturn(new BasicAttributes());
      Ec2MultiRegionAddressTranslator translator = new Ec2MultiRegionAddressTranslator(mock);
  
      InetSocketAddress address = new InetSocketAddress("192.0.2.5", 9042);
      assertThat(translator.translate(address)).isEqualTo(address);
    }
  
    @Test
    public void should_return_same_address_when_exception_encountered() throws Exception {
      InitialDirContext mock = mock(InitialDirContext.class);
      when(mock.getAttributes(anyString(), any(String[].class)))
          .thenThrow(new NamingException("Problem resolving address (not really)."));
      Ec2MultiRegionAddressTranslator translator = new Ec2MultiRegionAddressTranslator(mock);
  
      InetSocketAddress address = new InetSocketAddress("192.0.2.5", 9042);
      assertThat(translator.translate(address)).isEqualTo(address);
    }
  
    @Test
    public void should_return_new_address_when_match_found() throws Exception {
      InetSocketAddress expectedAddress = new InetSocketAddress("54.32.55.66", 9042);
  
      InitialDirContext mock = mock(InitialDirContext.class);
      when(mock.getAttributes("5.2.0.192.in-addr.arpa", new String[] {"PTR"}))
          .thenReturn(new BasicAttributes("PTR", expectedAddress.getHostName()));
      Ec2MultiRegionAddressTranslator translator = new Ec2MultiRegionAddressTranslator(mock);
  
      InetSocketAddress address = new InetSocketAddress("192.0.2.5", 9042);
      assertThat(translator.translate(address)).isEqualTo(expectedAddress);
    }
  
    @Test
    public void should_close_context_when_closed() throws Exception {
      InitialDirContext mock = mock(InitialDirContext.class);
      Ec2MultiRegionAddressTranslator translator = new Ec2MultiRegionAddressTranslator(mock);
  
      // ensure close has not been called to this point.
      verify(mock, times(0)).close();
      translator.close();
      // ensure close is closed.
      verify(mock).close();
    }
  
    @Test
    public void should_build_reversed_domain_name_for_ip_v4() throws Exception {
      InetAddress address = InetAddress.getByName("192.0.2.5");
      assertThat(Ec2MultiRegionAddressTranslator.reverse(address))
          .isEqualTo("5.2.0.192.in-addr.arpa");
    }
  
    @Test
    public void should_build_reversed_domain_name_for_ip_v6() throws Exception {
      InetAddress address = InetAddress.getByName("2001:db8::567:89ab");
      assertThat(Ec2MultiRegionAddressTranslator.reverse(address))
          .isEqualTo("b.a.9.8.7.6.5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa");
    }
  }
  