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
fail("Parent should not have been perspectiveB");
			}
			parent = parent.getParent();
		}
		assertNotNull(parent);
		perspectiveStack.setSelectedElement(perspectiveB);
		perspectiveB.getContext().activate();
		MPart part2 = partService.showPart("partId", PartState.ACTIVATE);
		parent = part2.getParent();
		while (parent != null) {
			if (parent == perspectiveB) {
				break;
			} else if (parent == perspectiveA) {
				fail("Parent should not have been perspectiveA");
			}
			parent = parent.getParent();
		}
		assertNotNull(parent);
		assertFalse(part == part2);
	}
	private void testShowPart_Part(PartState partState) {
		MApplication application = ApplicationFactoryImpl.eINSTANCE
				.createApplication();
		MWindow window = BasicFactoryImpl.eINSTANCE.createWindow();
		application.getChildren().add(window);
		MPartDescriptor partDescriptor = org.eclipse.e4.ui.model.application.descriptor.basic.impl.BasicFactoryImpl.eINSTANCE
				.createPartDescriptor();
		partDescriptor.setElementId("partId");
		application.getDescriptors().add(partDescriptor);
		application.setSelectedElement(window);