@Test
public void testGetNodeStyle() {

    Node node = new Node("my-node");
    assertThat(DotExportStyles.getNodeStyle(node), is("color = black"));
    node.setProperty(CycleFinder.IN_CYCLE, true);
    assertThat(DotExportStyles.getNodeStyle(node), is("color = red, penwidth = 3.0"));
}