/** Test of removeEdge method, of class EventsTreeAdapter. */ @Test(expected = NullPointerException.class) public void testRemoveEdge() { int width = 500, height = 500; System.out.println("removeEdge"); mxGraphComponent mxGraphComponent1 = new mxGraphComponent(new mxGraph()); mxGraphComponent1.setBounds(0, 0, width, height); expect(drawPanel.getComponents()).andReturn(new Component[] {mxGraphComponent1}).anyTimes(); replay(drawPanel); instance.draw(drawPanel); instance.draw(drawPanel); instance.draw(drawPanel); eventTreeUtil = new EventTreeUtil(drawPanel); instance.removeEdge(eventTreeUtil.getCellByID("E" + 2)); try { assertNull(eventTreeUtil.getCellByID("E" + 2)); fail("Nie usunieto 2."); } catch (NullPointerException exception) { try { assertNull(eventTreeUtil.getCellByID("E" + 5)); fail("Nie usunieto 5."); } catch (NullPointerException ex) { assertNull(eventTreeUtil.getCellByID("E" + 6)); } } }