Bug 325836 EPartService's createSharedPart(*) methods should not need its MWindow parameter
The service should only be interacting with its own window and not some other random window.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/workbench/PartRenderingEngineTests.java
appContext.set(MApplication.class.getName(), application);
		wb = new E4Workbench(application, appContext);
		wb.createAndRunUI(window);
		EPartService partService = window.getContext().get(EPartService.class);
		MPlaceholder placeholderA = partService.createSharedPart("sharedA",
				window);
		stack.getChildren().add(placeholderA);
		stack.setSelectedElement(placeholderA);
		MPart partA = (MPart) placeholderA.getRef();
		assertNotNull(partA.getObject());
		stack.setToBeRendered(false);
		assertNull(partA.getObject());
	}
	public void testRemoveGuiBug324228_1() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPart part = BasicFactoryImpl.eINSTANCE.createPart();
		part.setContributionURI("platform:/plugin/org.eclipse.e4.ui.tests/org.eclipse.e4.ui.tests.workbench.SampleView");
		window.getSharedElements().add(part);
		MPerspectiveStack perspectiveStack = AdvancedFactoryImpl.eINSTANCE
				.createPerspectiveStack();
		window.getChildren().add(perspectiveStack);
		window.setSelectedElement(perspectiveStack);
		MPerspective perspectiveA = AdvancedFactoryImpl.eINSTANCE
				.createPerspective();
		perspectiveA.setElementId("perspectiveA"); 
		perspectiveStack.getChildren().add(perspectiveA);