public void testSwitchWindows() {

		// create an application with two windows

		MApplication application = MApplicationFactory.eINSTANCE

				.createApplication();

		MWindow window1 = MApplicationFactory.eINSTANCE.createWindow();

		MWindow window2 = MApplicationFactory.eINSTANCE.createWindow();

		application.getChildren().add(window1);

		application.getChildren().add(window2);

		// place a part in the first window

		MPart part = MApplicationFactory.eINSTANCE.createPart();

		window1.getChildren().add(part);

		// setup the context

		applicationContext.set(MApplication.class.getName(), application);

		application.setContext(applicationContext);

		// render the windows

		engine.createGui(window1);

		engine.createGui(window2);

		EPartService windowService1 = (EPartService) window1.getContext().get(

				EPartService.class.getName());

		EPartService windowService2 = (EPartService) window2.getContext().get(

				EPartService.class.getName());

		assertNotNull(windowService1);

		assertNotNull(windowService2);

		assertNull("There should be nothing active in the first window",

				windowService1.getActivePart());

		assertNull("There should be nothing active in the second window",

				windowService2.getActivePart());

		// activate the part

		windowService1.activate(part);

		assertEquals("The part should have been activated", part,

				windowService1.getActivePart());

		assertNull("The second window has no parts, this should be null",

				windowService2.getActivePart());

		// now move the part over from the first window to the second window

		window2.getChildren().add(part);

		// activate the part

		windowService2.activate(part);

		assertNull("No parts in this window, this should be null",

				windowService1.getActivePart());

		assertEquals("We activated it just now, this should be active", part,

				windowService2.getActivePart());

	}