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(partC, partService.getActivePart());
	}
	/**
	 * Create a window with three parts, partA, partB contained within a part
	 * stack, and partC.
	 * <p>
	 * partA is initially active and then we proceed to activate partB and
	 * partC. Now we turn off the 'toBeRendered' flag of the part stack
	 * containing partB and then hide partC. partA should now become the active
	 * part as partB's parent container has been unrendered despite the fact
	 * that partB is the next available candidate in the activation history.
	 * </p>
	 */
	public void testHidePart_ActivationHistory24() {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		application.setSelectedElement(window);
		MPart partA = BasicFactoryImpl.eINSTANCE.createPart();
		window.getChildren().add(partA);
		window.setSelectedElement(partA);
		MPartStack partStack = BasicFactoryImpl.eINSTANCE.createPartStack();
		window.getChildren().add(partStack);
		MPart partB = BasicFactoryImpl.eINSTANCE.createPart();
		partStack.getChildren().add(partB);
		partStack.setSelectedElement(partB);
		MPart partC = BasicFactoryImpl.eINSTANCE.createPart();
		window.getChildren().add(partC);
		initialize(applicationContext, application);