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
assertEquals(partB, windowPartServiceB.getActivePart());
	}
	public void testIsPartVisible_NotInStack(boolean selected, boolean visible) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPart part = BasicFactoryImpl.eINSTANCE.createPart();
		part.setVisible(visible);
		window.getChildren().add(part);
		if (selected) {
			window.setSelectedElement(part);
		}
		initialize(applicationContext, application);
		getEngine().createGui(window);
		EPartService partService = (EPartService) window.getContext().get(
				EPartService.class.getName());
		assertEquals(visible, partService.isPartVisible(part));
		partService = (EPartService) part.getContext().get(
				EPartService.class.getName());
		assertEquals(visible, partService.isPartVisible(part));
	}
	public void testIsPartVisible_NotInStackTrueTrue() {
		testIsPartVisible_NotInStack(true, true);
	}
	public void testIsPartVisible_NotInStackFalseTrue() {
		testIsPartVisible_NotInStack(false, true);
	}
	public void testIsPartVisible_NotInStackFalseFalse() {