@Test
public void testIsAdjacent() {

    GraphStore graphStore = GraphGenerator.generateTinyGraphStore();
    Node n1 = graphStore.getNode("1");
    Node n2 = graphStore.getNode("2");
    Assert.assertTrue(graphStore.isAdjacent(n1, n2));
    Assert.assertFalse(graphStore.isAdjacent(n2, n1));
    graphStore.clearEdges();
    Assert.assertFalse(graphStore.isAdjacent(n1, n2));
}