1 files changed, 311 insertions, 311 deletions
diff --git a/plugins/org.eclipse.emf.cdo.dawn.tests/src/org/eclipse/emf/cdo/dawn/tests/ui/gmf/MultipleResourcesDeletionTest.java b/plugins/org.eclipse.emf.cdo.dawn.tests/src/org/eclipse/emf/cdo/dawn/tests/ui/gmf/MultipleResourcesDeletionTest.java
index bf4e06bde9..7a8a9c7af2 100644
--- a/plugins/org.eclipse.emf.cdo.dawn.tests/src/org/eclipse/emf/cdo/dawn/tests/ui/gmf/MultipleResourcesDeletionTest.java
+++ b/plugins/org.eclipse.emf.cdo.dawn.tests/src/org/eclipse/emf/cdo/dawn/tests/ui/gmf/MultipleResourcesDeletionTest.java
@@ -1,311 +1,311 @@
-/*
- * Copyright (c) 2004 - 2011 Eike Stepper (Berlin, Germany) 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:
- *    Martin Fluegge - initial API and implementation
- */
-package org.eclipse.emf.cdo.dawn.tests.ui.gmf;
-
-import org.eclipse.emf.cdo.dawn.examples.acore.ACoreRoot;
-import org.eclipse.emf.cdo.dawn.tests.AbstractDawnGEFTest;
-import org.eclipse.emf.cdo.dawn.tests.ui.util.DawnAcoreTestUtil;
-import org.eclipse.emf.cdo.dawn.tests.ui.util.DawnSWTBotUtil;
-import org.eclipse.emf.cdo.eresource.CDOResource;
-import org.eclipse.emf.cdo.session.CDOSession;
-import org.eclipse.emf.cdo.transaction.CDOTransaction;
-import org.eclipse.emf.cdo.util.CommitException;
-
-import org.eclipse.emf.ecore.EObject;
-
-import org.eclipse.gef.EditPart;
-import org.eclipse.gmf.runtime.notation.Diagram;
-import org.eclipse.gmf.runtime.notation.Edge;
-import org.eclipse.gmf.runtime.notation.Node;
-import org.eclipse.swtbot.eclipse.gef.finder.SWTGefBot;
-import org.eclipse.swtbot.eclipse.gef.finder.widgets.SWTBotGefEditPart;
-import org.eclipse.swtbot.eclipse.gef.finder.widgets.SWTBotGefEditor;
-import org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.util.List;
-
-/**
- * @author Martin Fluegge
- */
-@RunWith(SWTBotJunit4ClassRunner.class)
-public class MultipleResourcesDeletionTest extends AbstractDawnGEFTest
-{
-  private static SWTGefBot bot;
-
-  @BeforeClass
-  public static void beforeClass() throws Exception
-  {
-    bot = new SWTGefBot();
-    DawnSWTBotUtil.initTest(bot);
-  }
-
-  @Override
-  @Before
-  public void setUp() throws Exception
-  {
-    super.setUp();
-    bot.viewByTitle("CDO Sessions").close();
-  }
-
-  @Override
-  @After
-  public void tearDown() throws Exception
-  {
-    // closeAllEditors();
-    super.tearDown();
-  }
-
-  // @Test
-  public void testDeleteAClassRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    editor.save();
-
-    {
-      CDOSession session = openSession();
-      CDOTransaction transaction = session.openTransaction();
-      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
-
-      Diagram diagram = (Diagram)resource2.getContents().get(0);
-
-      Node nodeA = (Node)diagram.getChildren().get(0);
-      EObject aClass = nodeA.getElement();
-
-      diagram.removeChild(nodeA);
-      ((ACoreRoot)diagram.getElement()).getClasses().remove(aClass);
-
-      transaction.commit();
-      DawnAcoreTestUtil.sleep(1000);
-    }
-
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-    assertEquals(0, aClassEditParts.size());
-    Diagram diagram = (Diagram)editor.mainEditPart().part().getModel();
-    ACoreRoot aCoreRoot = (ACoreRoot)diagram.getElement();
-
-    assertEquals(0, aCoreRoot.getClasses().size());
-    editor.close();
-  }
-
-  // @Test
-  public void testDeleteAInterfaceRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_INTERFACE, 100, 100, "A", bot, editor);
-    editor.save();
-
-    {
-      CDOSession session = openSession();
-      CDOTransaction transaction = session.openTransaction();
-      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
-
-      Diagram diagram = (Diagram)resource2.getContents().get(0);
-
-      Node nodeA = (Node)diagram.getChildren().get(0);
-      EObject element = nodeA.getElement();
-
-      diagram.removeChild(nodeA);
-      ((ACoreRoot)diagram.getElement()).getInterfaces().remove(element);
-
-      transaction.commit();
-      sleep(1000);
-    }
-
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-    assertEquals(0, aClassEditParts.size());
-    Diagram diagram = (Diagram)editor.mainEditPart().part().getModel();
-    ACoreRoot aCoreRoot = (ACoreRoot)diagram.getElement();
-
-    assertEquals(0, aCoreRoot.getInterfaces().size());
-    editor.close();
-  }
-
-  @Test
-  public void testDeleteAssociationConnectionRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-
-    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
-    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
-
-    createEdge(DawnAcoreTestUtil.CONNECTION_ASSOCIATION, nodeA, nodeB, editor);
-    editor.save();
-
-    deleteEdge();
-
-    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
-    assertEquals(0, connectionEditParts.size());
-    sleep(1000);
-  }
-
-  @SuppressWarnings("unchecked")
-  private List<Edge> getAllConnections(EditPart part)
-  {
-    Diagram diagram = (Diagram)part.getModel();
-    return diagram.getEdges();
-  }
-
-  @Test
-  public void testDeleteCompositionConnectionRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-
-    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
-    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
-
-    createEdge(DawnAcoreTestUtil.CONNECTION_COMPOSITION, nodeA, nodeB, editor);
-    editor.save();
-
-    deleteEdge();
-
-    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
-    assertEquals(0, connectionEditParts.size());
-  }
-
-  @Test
-  public void testDeleteInheritanceConnectionRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-
-    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
-    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
-
-    createEdge(DawnAcoreTestUtil.CONNECTION_IHERITS, nodeA, nodeB, editor);
-    editor.save();
-
-    deleteEdge();
-
-    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
-    assertEquals(0, connectionEditParts.size());
-  }
-
-  @Test
-  public void testDeleteImplementsConnectionRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    createNodeWithLabel(DawnAcoreTestUtil.A_INTERFACE, 200, 200, "B", bot, editor);
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-    List<SWTBotGefEditPart> aInterfaceEditParts = DawnAcoreTestUtil.getAInterfaceEditParts(editor);
-
-    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
-    Node nodeB = (Node)aInterfaceEditParts.get(0).part().getModel();
-
-    createEdge(DawnAcoreTestUtil.CONNECTION_IMPLEMENTS, nodeA, nodeB, editor);
-    editor.save();
-
-    deleteEdge();
-
-    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
-    assertEquals(0, connectionEditParts.size());
-  }
-
-  @Test
-  public void testDeleteAggregationConnectionRemotely() throws Exception
-  {
-    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
-
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
-    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
-    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
-
-    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
-    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
-
-    createEdge(DawnAcoreTestUtil.CONNECTION_AGGREGATION, nodeA, nodeB, editor);
-    editor.save();
-
-    deleteEdge();
-
-    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
-    assertEquals(0, connectionEditParts.size());
-  }
-
-  private void deleteEdge() throws CommitException
-  {
-    {
-      CDOSession session = openSession("repo1");
-      CDOTransaction transaction = session.openTransaction();
-      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
-
-      Diagram diagram = (Diagram)resource2.getContents().get(0);
-
-      Edge edge = (Edge)diagram.getEdges().get(0);
-      edge.setSource(null);
-      edge.setTarget(null);
-      diagram.removeEdge(edge);
-      transaction.commit();
-
-      sleep(1000);
-    }
-  }
-  /**
-   * left for future reference
-   */
-  // private class EdgeDeletionThread extends Thread
-  // {
-  // private final CountDownLatch cdl;
-  //
-  // public EdgeDeletionThread(CountDownLatch cdl)
-  // {
-  // this.cdl = cdl;
-  // setDaemon(true);
-  // }
-  //
-  // @Override
-  // public void run()
-  // {
-  // CDOSession session = openSession();
-  // CDOTransaction transaction = session.openTransaction();
-  // CDOResource resource2 = transaction.getResource("/default.acore_diagram");
-  //
-  // Diagram diagram = (Diagram)resource2.getContents().get(0);
-  //
-  // Edge edge = (Edge)diagram.getEdges().get(0);
-  // diagram.removeEdge(edge);
-  // try
-  // {
-  // transaction.commit();
-  // }
-  // catch (CommitException ex)
-  // {
-  // throw new RuntimeException(ex);
-  // }
-  // finally
-  // {
-  // transaction.close();
-  // cdl.countDown();
-  // }
-  // }
-  // }
-}
+/*
+ * Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) 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:
+ *    Martin Fluegge - initial API and implementation
+ */
+package org.eclipse.emf.cdo.dawn.tests.ui.gmf;
+
+import org.eclipse.emf.cdo.dawn.examples.acore.ACoreRoot;
+import org.eclipse.emf.cdo.dawn.tests.AbstractDawnGEFTest;
+import org.eclipse.emf.cdo.dawn.tests.ui.util.DawnAcoreTestUtil;
+import org.eclipse.emf.cdo.dawn.tests.ui.util.DawnSWTBotUtil;
+import org.eclipse.emf.cdo.eresource.CDOResource;
+import org.eclipse.emf.cdo.session.CDOSession;
+import org.eclipse.emf.cdo.transaction.CDOTransaction;
+import org.eclipse.emf.cdo.util.CommitException;
+
+import org.eclipse.emf.ecore.EObject;
+
+import org.eclipse.gef.EditPart;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.Edge;
+import org.eclipse.gmf.runtime.notation.Node;
+import org.eclipse.swtbot.eclipse.gef.finder.SWTGefBot;
+import org.eclipse.swtbot.eclipse.gef.finder.widgets.SWTBotGefEditPart;
+import org.eclipse.swtbot.eclipse.gef.finder.widgets.SWTBotGefEditor;
+import org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.List;
+
+/**
+ * @author Martin Fluegge
+ */
+@RunWith(SWTBotJunit4ClassRunner.class)
+public class MultipleResourcesDeletionTest extends AbstractDawnGEFTest
+{
+  private static SWTGefBot bot;
+
+  @BeforeClass
+  public static void beforeClass() throws Exception
+  {
+    bot = new SWTGefBot();
+    DawnSWTBotUtil.initTest(bot);
+  }
+
+  @Override
+  @Before
+  public void setUp() throws Exception
+  {
+    super.setUp();
+    bot.viewByTitle("CDO Sessions").close();
+  }
+
+  @Override
+  @After
+  public void tearDown() throws Exception
+  {
+    // closeAllEditors();
+    super.tearDown();
+  }
+
+  // @Test
+  public void testDeleteAClassRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    editor.save();
+
+    {
+      CDOSession session = openSession();
+      CDOTransaction transaction = session.openTransaction();
+      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
+
+      Diagram diagram = (Diagram)resource2.getContents().get(0);
+
+      Node nodeA = (Node)diagram.getChildren().get(0);
+      EObject aClass = nodeA.getElement();
+
+      diagram.removeChild(nodeA);
+      ((ACoreRoot)diagram.getElement()).getClasses().remove(aClass);
+
+      transaction.commit();
+      DawnAcoreTestUtil.sleep(1000);
+    }
+
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+    assertEquals(0, aClassEditParts.size());
+    Diagram diagram = (Diagram)editor.mainEditPart().part().getModel();
+    ACoreRoot aCoreRoot = (ACoreRoot)diagram.getElement();
+
+    assertEquals(0, aCoreRoot.getClasses().size());
+    editor.close();
+  }
+
+  // @Test
+  public void testDeleteAInterfaceRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_INTERFACE, 100, 100, "A", bot, editor);
+    editor.save();
+
+    {
+      CDOSession session = openSession();
+      CDOTransaction transaction = session.openTransaction();
+      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
+
+      Diagram diagram = (Diagram)resource2.getContents().get(0);
+
+      Node nodeA = (Node)diagram.getChildren().get(0);
+      EObject element = nodeA.getElement();
+
+      diagram.removeChild(nodeA);
+      ((ACoreRoot)diagram.getElement()).getInterfaces().remove(element);
+
+      transaction.commit();
+      sleep(1000);
+    }
+
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+    assertEquals(0, aClassEditParts.size());
+    Diagram diagram = (Diagram)editor.mainEditPart().part().getModel();
+    ACoreRoot aCoreRoot = (ACoreRoot)diagram.getElement();
+
+    assertEquals(0, aCoreRoot.getInterfaces().size());
+    editor.close();
+  }
+
+  @Test
+  public void testDeleteAssociationConnectionRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+
+    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
+    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
+
+    createEdge(DawnAcoreTestUtil.CONNECTION_ASSOCIATION, nodeA, nodeB, editor);
+    editor.save();
+
+    deleteEdge();
+
+    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
+    assertEquals(0, connectionEditParts.size());
+    sleep(1000);
+  }
+
+  @SuppressWarnings("unchecked")
+  private List<Edge> getAllConnections(EditPart part)
+  {
+    Diagram diagram = (Diagram)part.getModel();
+    return diagram.getEdges();
+  }
+
+  @Test
+  public void testDeleteCompositionConnectionRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+
+    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
+    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
+
+    createEdge(DawnAcoreTestUtil.CONNECTION_COMPOSITION, nodeA, nodeB, editor);
+    editor.save();
+
+    deleteEdge();
+
+    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
+    assertEquals(0, connectionEditParts.size());
+  }
+
+  @Test
+  public void testDeleteInheritanceConnectionRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+
+    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
+    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
+
+    createEdge(DawnAcoreTestUtil.CONNECTION_IHERITS, nodeA, nodeB, editor);
+    editor.save();
+
+    deleteEdge();
+
+    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
+    assertEquals(0, connectionEditParts.size());
+  }
+
+  @Test
+  public void testDeleteImplementsConnectionRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    createNodeWithLabel(DawnAcoreTestUtil.A_INTERFACE, 200, 200, "B", bot, editor);
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+    List<SWTBotGefEditPart> aInterfaceEditParts = DawnAcoreTestUtil.getAInterfaceEditParts(editor);
+
+    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
+    Node nodeB = (Node)aInterfaceEditParts.get(0).part().getModel();
+
+    createEdge(DawnAcoreTestUtil.CONNECTION_IMPLEMENTS, nodeA, nodeB, editor);
+    editor.save();
+
+    deleteEdge();
+
+    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
+    assertEquals(0, connectionEditParts.size());
+  }
+
+  @Test
+  public void testDeleteAggregationConnectionRemotely() throws Exception
+  {
+    SWTBotGefEditor editor = DawnAcoreTestUtil.openNewAcoreGMFEditor("default.acore_diagram", bot);
+
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 100, 100, "A", bot, editor);
+    createNodeWithLabel(DawnAcoreTestUtil.A_CLASS, 200, 200, "B", bot, editor);
+    List<SWTBotGefEditPart> aClassEditParts = DawnAcoreTestUtil.getAClassEditParts(editor);
+
+    Node nodeA = (Node)aClassEditParts.get(0).part().getModel();
+    Node nodeB = (Node)aClassEditParts.get(1).part().getModel();
+
+    createEdge(DawnAcoreTestUtil.CONNECTION_AGGREGATION, nodeA, nodeB, editor);
+    editor.save();
+
+    deleteEdge();
+
+    List<Edge> connectionEditParts = getAllConnections(editor.mainEditPart().part());
+    assertEquals(0, connectionEditParts.size());
+  }
+
+  private void deleteEdge() throws CommitException
+  {
+    {
+      CDOSession session = openSession("repo1");
+      CDOTransaction transaction = session.openTransaction();
+      CDOResource resource2 = transaction.getResource("/default.acore_diagram");
+
+      Diagram diagram = (Diagram)resource2.getContents().get(0);
+
+      Edge edge = (Edge)diagram.getEdges().get(0);
+      edge.setSource(null);
+      edge.setTarget(null);
+      diagram.removeEdge(edge);
+      transaction.commit();
+
+      sleep(1000);
+    }
+  }
+  /**
+   * left for future reference
+   */
+  // private class EdgeDeletionThread extends Thread
+  // {
+  // private final CountDownLatch cdl;
+  //
+  // public EdgeDeletionThread(CountDownLatch cdl)
+  // {
+  // this.cdl = cdl;
+  // setDaemon(true);
+  // }
+  //
+  // @Override
+  // public void run()
+  // {
+  // CDOSession session = openSession();
+  // CDOTransaction transaction = session.openTransaction();
+  // CDOResource resource2 = transaction.getResource("/default.acore_diagram");
+  //
+  // Diagram diagram = (Diagram)resource2.getContents().get(0);
+  //
+  // Edge edge = (Edge)diagram.getEdges().get(0);
+  // diagram.removeEdge(edge);
+  // try
+  // {
+  // transaction.commit();
+  // }
+  // catch (CommitException ex)
+  // {
+  // throw new RuntimeException(ex);
+  // }
+  // finally
+  // {
+  // transaction.close();
+  // cdl.countDown();
+  // }
+  // }
+  // }
+}