Bug 291934 Sash tests failing over part renderer call
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/workbench/RenderingTestCase.java
* <li>MStack -> CTabFol2der</li>
 * <li>MContributedPart -> Composite</li>
 * </ul>
 * <li>The name of an MItem is correctly set in the resulting SWT widget</li>
 * <li>The Image of an MItem is correctly set in the resulting SWT widget</li>
 * <li>The Tooltip Text of an MItem is correctly set in the resulting SWT widget
 * </li>
 * </ol>
 * </p>
 */
public class RenderingTestCase extends TestCase {
	
	protected static IContributionFactory contributionFactory = new ReflectionContributionFactory(
			RegistryFactory.getRegistry());
	protected static IEclipseContext serviceContext = EclipseContextFactory
			.createServiceContext(Activator.getDefault().getBundle()
					.getBundleContext());
	protected static MApplication<MWindow<?>> app = ApplicationFactory.eINSTANCE
			.createMApplication();
	protected static Display display = Display.getCurrent() != null ? Display
			.getCurrent() : new Display();
	
	protected PartRenderingEngine renderer;
	protected IEclipseContext appContext;
	protected Widget topWidget;
	protected long startTime;
	/**
	 * Test cases derived from this class are used to test the Model <-> (SWT)
	 * UI relationships. These tests will ensure that the correct controls are
	 * created and that the various listeners (data bindings...) behave