@Test
  public void testIndexIntOnEdge() {
    ThunderGraph thunderGraph = new ThunderGraph(this.dbPath);
    try {
      thunderGraph.createKeyIndex("name1", Edge.class);
      Vertex v1 = thunderGraph.addVertex(null);
      Vertex v2 = thunderGraph.addVertex(null);
      Vertex v3 = thunderGraph.addVertex(null);
      Edge e1 = v1.addEdge("edge1", v2);
      e1.setProperty("name1", 1);
      Edge e2 = v1.addEdge("edge1", v3);
      e2.setProperty("name1", 1);
      thunderGraph.commit();

      Assert.assertEquals(1, thunderGraph.getIndexedKeys(Edge.class).size());
      Assert.assertEquals(0, count(thunderGraph.getEdges("name", 1).iterator()));
      Assert.assertEquals(2, count(thunderGraph.getEdges("name1", 1).iterator()));
      Assert.assertEquals(0, count(thunderGraph.getEdges("name1", 2).iterator()));

      thunderGraph.printDb(DbEnum.EDGE_INT_INDEX);

    } finally {
      thunderGraph.shutdown();
    }
  }
  @Test
  public void testIndexIntOnVertex() {
    ThunderGraph thunderGraph = new ThunderGraph(this.dbPath);
    try {
      thunderGraph.createKeyIndex("name1", Vertex.class);
      thunderGraph.createKeyIndex("name2", Vertex.class);
      thunderGraph.commit();

      Vertex v1 = thunderGraph.addVertex(null);
      v1.setProperty("name1", 11);
      v1.setProperty("name2", 12);
      Vertex v2 = thunderGraph.addVertex(null);
      v2.setProperty("name1", 21);
      v2.setProperty("name2", 22);

      thunderGraph.commit();

      Set<String> indexedKeys = thunderGraph.getIndexedKeys(Vertex.class);
      Assert.assertEquals(2, indexedKeys.size());
      Assert.assertTrue(indexedKeys.contains("name1"));
      Assert.assertTrue(indexedKeys.contains("name2"));

      Iterable<Vertex> name11s = thunderGraph.getVertices("name1", 11);
      Assert.assertEquals(1, countIter(name11s.iterator()));
      Iterable<Vertex> name21s = thunderGraph.getVertices("name1", 21);
      Assert.assertEquals(1, countIter(name21s.iterator()));

      name11s = thunderGraph.getVertices("name1", 12);
      Assert.assertEquals(0, countIter(name11s.iterator()));
      name21s = thunderGraph.getVertices("name1", 22);
      Assert.assertEquals(0, countIter(name21s.iterator()));

    } finally {
      thunderGraph.shutdown();
    }
  }