tests/org.simantics.db.tests/src/org/simantics/db/tests/api/support/undoRedoSupport/UndoTest05.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.tests.api.support.undoRedoSupport;
  13
  14 import org.junit.Test;
  15 import org.simantics.databoard.Bindings;
  16 import org.simantics.db.ReadGraph;
  17 import org.simantics.db.Resource;
  18 import org.simantics.db.Session;
  19 import org.simantics.db.WriteGraph;
  20 import org.simantics.db.common.request.ReadRequest;
  21 import org.simantics.db.common.request.WriteRequest;
  22 import org.simantics.db.exception.DatabaseException;
  23 import org.simantics.db.exception.NoSingleResultException;
  24 import org.simantics.db.service.UndoRedoSupport;
  25 import org.simantics.db.testing.base.ExistingDatabaseTest;
  26 import org.simantics.layer0.Layer0;
  27 import org.simantics.utils.DataContainer;
  28
  29 /**
  30  * Tests cases where a non-functional relation uses
  31  * {@link ReadGraph#getSingleObject(org.simantics.db.Resource, org.simantics.db.Resource)}
  32  * with > 1 objects.
  33  *
  34  * <p>
  35  * Should throw {@link NoSingleResultException}, at the time of writing this
  36  * test, AsyncBarrierImpl refcounting is trashed and DB client is stuck.
  37  */
  38 public class UndoTest05 extends ExistingDatabaseTest {
  39
  40         @Test
  41     public void testUndo5() throws Exception {
  42
  43         Session session = getSession();
  44         final UndoRedoSupport support = session.getService(UndoRedoSupport.class);
  45
  46         final DataContainer<Resource> subject = new DataContainer<Resource>();
  47         final String value = "value";
  48         final String newValue = "new value";
  49         try {
  50             session.syncRequest(new WriteRequest() {
  51                 @Override
  52                 public void perform(WriteGraph graph) throws DatabaseException {
  53                     graph.markUndoPoint();
  54                     Layer0 b = Layer0.getInstance(graph);
  55                     Resource s = graph.newResource();
  56                     graph.claim(s, b.InstanceOf, b.Entity);
  57                     graph.claimValue(s, value);
  58                     subject.set(s);
  59                 }
  60             });
  61         } catch (Throwable e) {
  62             fail("Write transaction threw an unknown exception " + e);
  63         }
  64         try {
  65             session.syncRequest(new ReadRequest() {
  66                 @Override
  67                 public void run(ReadGraph graph) throws DatabaseException {
  68                     Resource s = subject.get();
  69                     if (!graph.hasStatement(s))
  70                         fail("Failed to verify modifications (stm).");
  71                     String t = graph.getValue(s, Bindings.STRING);
  72                     if (!t.equals(value))
  73                         fail("Failed to verify modifications (value).");
  74                 }
  75             });
  76         } catch (Throwable e) {
  77             fail("Read transaction threw an unexpected exception " + e);
  78         }
  79
  80         try {
  81             session.syncRequest(new WriteRequest() {
  82                 @Override
  83                 public void perform(WriteGraph graph) throws DatabaseException {
  84                     graph.markUndoPoint();
  85                     Resource s = subject.get();
  86                     graph.claimValue(s, newValue);
  87                 }
  88             });
  89         } catch (Throwable e) {
  90             fail("Write transaction threw an unknown exception " + e);
  91         }
  92
  93         support.undo(session, 2);
  94
  95         try {
  96             session.syncRequest(new ReadRequest() {
  97                 @Override
  98                 public void run(ReadGraph graph) throws DatabaseException {
  99                     Resource s = subject.get();
 100                     String t = graph.getPossibleValue(s, Bindings.STRING);
 101                     if (null != t)
 102                         fail("Failed to verify modifications (value).");
 103                 }
 104             });
 105         } catch (Throwable e) {
 106             fail("Read transaction threw an unexpected exception " + e);
 107         }
 108
 109     }
 110
 111 }