Bug 291934 Sash tests failing over part renderer call
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/workbench/RenderingTestCase.java
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 * Copyright (c) 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.e4.ui.tests.workbench;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import junit.framework.TestCase;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.runtime.RegistryFactory;
import org.eclipse.e4.core.services.IContributionFactory;
import org.eclipse.e4.core.services.context.EclipseContextFactory;
import org.eclipse.e4.core.services.context.IEclipseContext;
import org.eclipse.e4.ui.model.application.ApplicationFactory;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.MItem;
import org.eclipse.e4.ui.model.application.MPart;
import org.eclipse.e4.ui.model.application.MWindow;
import org.eclipse.e4.ui.model.internal.application.MContributedPartImpl;
import org.eclipse.e4.ui.model.internal.application.MSashFormImpl;