Bug 329482 Uninstantiated part may be rendered when closing another part in the same stack
1. Activate the 'Javadoc' view. 2. Activate the 'Package Explorer' view. 3. Shutdown. 4. Restart. 5. Ctrl+3 > Properties 6. Hide the 'Properties' view. 7. Now the 'Problems' view is the selected element. It should be the 'Javadoc' view.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
partService.hidePart(partB, force);
	}
	public void testHidePart_Bug325148_Unrendered_True() {
		testHidePart_Bug325148_Unrendered(true);
	}
	public void testHidePart_Bug325148_Unrendered_False() {
		testHidePart_Bug325148_Unrendered(false);
	}
	public void testHidePart_Bug327026() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPartStack stack = BasicFactoryImpl.eINSTANCE.createPartStack();
		window.getChildren().add(stack);
		window.setSelectedElement(stack);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		stack.getChildren().add(partA);
		stack.setSelectedElement(partA);
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		partB.setToBeRendered(false);
		stack.getChildren().add(partB);
		initialize(applicationContext, application);
		getEngine().createGui(window);
		window.getContext().get(EPartService.class).hidePart(partA, true);
		
		
		assertNull(stack.getSelectedElement());
	}