Bug 252117 [DataBinding] ListBinding does not update from model to target in some cases
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/core/tests/internal/databinding/beans/JavaBeanObservableArrayBasedSetTest.java
import java.util.HashSet;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.eclipse.core.databinding.observable.IObservable;
import org.eclipse.core.databinding.observable.IObservableCollection;
import org.eclipse.core.databinding.observable.Realm;
import org.eclipse.core.databinding.observable.set.IObservableSet;
import org.eclipse.core.databinding.observable.set.SetChangeEvent;
import org.eclipse.core.internal.databinding.beans.JavaBeanObservableSet;
import org.eclipse.jface.databinding.conformance.MutableObservableSetContractTest;
import org.eclipse.jface.databinding.conformance.delegate.AbstractObservableCollectionContractDelegate;
import org.eclipse.jface.databinding.conformance.util.SetChangeEventTracker;
import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.jface.tests.databinding.AbstractDefaultRealmTestCase;
import org.eclipse.swt.widgets.Display;
/**
 * @since 1.1
 */
public class JavaBeanObservableArrayBasedSetTest extends
		AbstractDefaultRealmTestCase {
	private JavaBeanObservableSet set;
	private PropertyDescriptor propertyDescriptor;
	private Bean bean;
	private String propertyName;
	protected void setUp() throws Exception {
		super.setUp();
		propertyName = "array";
		propertyDescriptor = new PropertyDescriptor(propertyName, Bean.class);
		bean = new Bean(new HashSet());
		set = new JavaBeanObservableSet(SWTObservables.getRealm(Display