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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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 org.apache.atlas.repository.graphdb.janus;
  
  import org.apache.atlas.ApplicationProperties;
  import org.apache.atlas.AtlasException;
  import org.apache.atlas.graph.GraphSandboxUtil;
  import org.apache.atlas.repository.graphdb.AtlasGraph;
  import org.apache.atlas.runner.LocalSolrRunner;
  import org.apache.commons.configuration.Configuration;
  import org.testng.annotations.AfterClass;
  import org.testng.annotations.BeforeTest;
  import org.testng.annotations.Test;
  
  import static org.apache.atlas.graph.GraphSandboxUtil.useLocalSolr;
  import static org.testng.Assert.assertEquals;
  import static org.testng.Assert.fail;
  
  @Test
  public class JanusGraphProviderTest {
      private Configuration    configuration;
      private AtlasGraph<?, ?> graph;
  
      @BeforeTest
      public void setUp() throws Exception {
          GraphSandboxUtil.create();
  
          if (useLocalSolr()) {
              LocalSolrRunner.start();
          }
  
          //First get Instance
          graph         = new AtlasJanusGraph();
          configuration = ApplicationProperties.getSubsetConfiguration(ApplicationProperties.get(), AtlasJanusGraphDatabase.GRAPH_PREFIX);
      }
  
      @AfterClass
      public void tearDown() throws Exception {
          try {
              graph.shutdown();
          } catch (Exception e) {
              e.printStackTrace();
          }
  
          try {
              graph.clear();
          } catch (Exception e) {
              e.printStackTrace();
          }
  
          if (useLocalSolr()) {
              LocalSolrRunner.stop();
          }
      }
  
      @Test
      public void testValidate() throws AtlasException {
          try {
              AtlasJanusGraphDatabase.validateIndexBackend(configuration);
          } catch (Exception e) {
              fail("Unexpected exception ", e);
          }
  
          //Change backend
          configuration.setProperty(AtlasJanusGraphDatabase.INDEX_BACKEND_CONF, AtlasJanusGraphDatabase.INDEX_BACKEND_LUCENE);
  
          try {
              AtlasJanusGraphDatabase.validateIndexBackend(configuration);
  
              fail("Expected exception");
          } catch (Exception e) {
              assertEquals(e.getMessage(), "Configured Index Backend lucene differs from earlier configured Index Backend solr. Aborting!");
          }
      }
  }
  