node1.setOrigin(10, 10); // (10, 10, 80, 40) -> max (90, 50)
node2.setOrigin(120, 10); // (120, 10, 80, 40) -> max (200, 50)
SimpleConnectionSelection selection = setupConnection();
// insert a new control point to make a total of three
conn.getPoints().add(1, new Point2D.Double(105, 90));
selection.startDragging(105, 90);
assertTrue(selection.isDragging());
selection.updatePosition(120, 50);
selection.updatePosition(130, 70);
selection.updatePosition(140, 90);
selection.stopDragging(140, 90);