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 = window.getContext().get(EPartService.class);
		partService.activate(partA);
		partService.switchPerspective(perspectiveB);
		partService.activate(partB);
		partService.switchPerspective(perspectiveA);
		assertEquals(partA, partService.getActivePart());
		partService.activate(partA);
		assertEquals(partA, partService.getActivePart());
		partService.switchPerspective(perspectiveB);
		assertEquals(partB, partService.getActivePart());
		partService.activate(partC);
		assertEquals(partC, partService.getActivePart());
		partService.switchPerspective(perspectiveA);
		assertEquals(partA, partService.getActivePart());
		partService.hidePart(partB, force);
		assertFalse(placeholderB1.isToBeRendered());
	}
	public void testHidePart_Bug327917_True() {
		testHidePart_Bug327917(true);
	}
	public void testHidePart_Bug327917_False() {
		testHidePart_Bug327917(false);
	}
	private void testHidePart_Bug327964(boolean force) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);