hugegraph-test/src/main/java/org/apache/hugegraph/core/RamTableTest.java [95:136]:
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        HugeGraph graph = this.graph();

        // insert vertices and edges
        for (int i = 0; i < 100; i++) {
            Vertex v1 = graph.addVertex(T.label, "vl1", T.id, i);
            Vertex v2 = graph.addVertex(T.label, "vl1", T.id, i + 100);
            v1.addEdge("el1", v2);
        }
        graph.tx().commit();

        for (int i = 1000; i < 1100; i++) {
            Vertex v1 = graph.addVertex(T.label, "vl2", T.id, i);
            Vertex v2 = graph.addVertex(T.label, "vl2", T.id, i + 100);
            v1.addEdge("el2", v2);
        }
        graph.tx().commit();

        // reload ramtable
        Whitebox.invoke(graph.getClass(), "reloadRamtable", graph);

        // query edges
        for (int i = 0; i < 100; i++) {
            Iterator<Edge> edges = this.edgesOfVertex(IdGenerator.of(i),
                                                      Directions.OUT, null);
            Assert.assertTrue(edges.hasNext());
            HugeEdge edge = (HugeEdge) edges.next();
            Assert.assertEquals(i + 100, edge.id().otherVertexId().asLong());
            Assert.assertEquals(Directions.OUT, edge.direction());
            Assert.assertEquals("el1", edge.label());

            Assert.assertFalse(edges.hasNext());
        }
        for (int i = 1000; i < 1100; i++) {
            Iterator<Edge> edges = this.edgesOfVertex(IdGenerator.of(i),
                                                      Directions.OUT, null);
            Assert.assertTrue(edges.hasNext());
            HugeEdge edge = (HugeEdge) edges.next();
            Assert.assertEquals(i + 100, edge.id().otherVertexId().asLong());
            Assert.assertEquals(Directions.OUT, edge.direction());
            Assert.assertEquals("el2", edge.label());

            Assert.assertFalse(edges.hasNext());
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hugegraph-test/src/main/java/org/apache/hugegraph/core/RamTableTest.java [142:183]:
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        HugeGraph graph = this.graph();

        // insert vertices and edges
        for (int i = 0; i < 100; i++) {
            Vertex v1 = graph.addVertex(T.label, "vl1", T.id, i);
            Vertex v2 = graph.addVertex(T.label, "vl1", T.id, i + 100);
            v1.addEdge("el1", v2);
        }
        graph.tx().commit();

        for (int i = 1000; i < 1100; i++) {
            Vertex v1 = graph.addVertex(T.label, "vl2", T.id, i);
            Vertex v2 = graph.addVertex(T.label, "vl2", T.id, i + 100);
            v1.addEdge("el2", v2);
        }
        graph.tx().commit();

        // reload ramtable
        Whitebox.invoke(graph.getClass(), "reloadRamtable", graph);

        // query edges
        for (int i = 0; i < 100; i++) {
            Iterator<Edge> edges = this.edgesOfVertex(IdGenerator.of(i),
                                                      Directions.OUT, null);
            Assert.assertTrue(edges.hasNext());
            HugeEdge edge = (HugeEdge) edges.next();
            Assert.assertEquals(i + 100, edge.id().otherVertexId().asLong());
            Assert.assertEquals(Directions.OUT, edge.direction());
            Assert.assertEquals("el1", edge.label());

            Assert.assertFalse(edges.hasNext());
        }
        for (int i = 1000; i < 1100; i++) {
            Iterator<Edge> edges = this.edgesOfVertex(IdGenerator.of(i),
                                                      Directions.OUT, null);
            Assert.assertTrue(edges.hasNext());
            HugeEdge edge = (HugeEdge) edges.next();
            Assert.assertEquals(i + 100, edge.id().otherVertexId().asLong());
            Assert.assertEquals(Directions.OUT, edge.direction());
            Assert.assertEquals("el2", edge.label());

            Assert.assertFalse(edges.hasNext());
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