@Test
 public void dotImport() {
   Shell shell = new Shell();
   DotImport importer = new DotImport("digraph Sample{1;2;1->2}");
   Graph graph = importer.newGraphInstance(shell, SWT.NONE);
   Assert.assertNotNull("Created graph must not be null", graph);
   Assert.assertEquals(ZestStyles.CONNECTIONS_DIRECTED, graph.getConnectionStyle());
   // open(shell);
 }
 @Test
 public void minimalUsage() {
   Shell shell = new Shell();
   /* The DOT input, can be given as a String, File or IFile: */
   DotImport dotImport = new DotImport("digraph Simple { 1;2; 1->2 }");
   /* Create a Zest graph instance in a parent, with a style: */
   Graph graph = dotImport.newGraphInstance(shell, SWT.NONE);
   // open(shell); // sets title, layout, and size, opens the shell
   System.out.println(graph);
 }