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
getEngine().createGui(window);
		EPartService partService = (EPartService) window.getContext().get(
				EPartService.class.getName());
		MPart createdPart = partService.createPart("partId");
		MPart shownPart = partService.showPart(createdPart, partState);
		assertNotNull(shownPart);
		if (multipleAllowed) {
			assertEquals(createdPart, shownPart);
		} else {
			assertEquals(part, shownPart);
		}
	}
	public void testShowPart_Part_MultipleExists_TrueACTIVATE() {
		testShowPart_Part_MultipleExists(true, PartState.ACTIVATE);
	}
	public void testShowPart_Part_MultipleExists_FalseACTIVATE() {
		testShowPart_Part_MultipleExists(false, PartState.ACTIVATE);
	}
	public void testShowPart_Part_MultipleExists_TrueVISIBLE() {
		testShowPart_Part_MultipleExists(true, PartState.VISIBLE);
	}
	public void testShowPart_Part_MultipleExists_FalseVISIBLE() {
		testShowPart_Part_MultipleExists(false, PartState.VISIBLE);
	}
	public void testShowPart_Part_MultipleExists_TrueCREATE() {
		testShowPart_Part_MultipleExists(true, PartState.CREATE);
	}
	public void testShowPart_Part_MultipleExists_FalseCREATE() {
		testShowPart_Part_MultipleExists(false, PartState.CREATE);
	}