@Test
public void testMergeSame() {

    DependencyGraph graph = DependencyGraphFactory.createGraph();
    GraphReaderWriter.merge(graph, "src/test/resources/graphs/testGraph1.json");
    assertThat(graph.getAllNodes()).hasSize(5);
    GraphReaderWriter.merge(graph, "src/test/resources/graphs/testGraph1.json");
    assertThat(graph.getAllNodes()).hasSize(5);
}