tests/org.simantics.db.tests/src/org/simantics/db/tests/api/support/undoRedoSupport/UndoTest04.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.service.UndoRedoSupport;
  24 import org.simantics.db.testing.base.ExistingDatabaseTest;
  25 import org.simantics.layer0.Layer0;
  26 import org.simantics.utils.DataContainer;
  27
  28 /**
  29  * Test case description missing!
  30  */
  31 public class UndoTest04 extends ExistingDatabaseTest {
  32
  33         @Test
  34     public void testUndo4() throws Exception {
  35
  36         Session session = getSession();
  37         final UndoRedoSupport support = session.getService(UndoRedoSupport.class);
  38         final DataContainer<Resource> subject = new DataContainer<Resource>();
  39         final String value = "value";
  40         final String newValue = "new value";
  41         try {
  42             session.syncRequest(new WriteRequest() {
  43                 @Override
  44                 public void perform(WriteGraph graph) throws DatabaseException {
  45                     // Use any non-functional relation
  46                     Layer0 b = Layer0.getInstance(graph);
  47                     Resource s = graph.newResource();
  48                     graph.claim(s, b.InstanceOf, b.Entity);
  49                     graph.claimValue(s, value);
  50                     subject.set(s);
  51                 }
  52             });
  53         } catch (Throwable e) {
  54             fail("Write transaction threw an unknown exception " + e);
  55         }
  56
  57         try {
  58             session.syncRequest(new ReadRequest() {
  59                 @Override
  60                 public void run(ReadGraph graph) throws DatabaseException {
  61                     Resource s = subject.get();
  62                     if (!graph.hasStatement(s))
  63                         fail("Failed to verify modifications (stm).");
  64                     String t = graph.getValue(s, Bindings.STRING);
  65                     if (!t.equals(value))
  66                         fail("Failed to verify modifications (value).");
  67                 }
  68             });
  69         } catch (Throwable e) {
  70             fail("Read transaction threw an unexpected exception " + e);
  71         }
  72
  73         try {
  74             session.syncRequest(new WriteRequest() {
  75                 @Override
  76                 public void perform(WriteGraph graph) throws DatabaseException {
  77                     graph.markUndoPoint();
  78                     Resource s = subject.get();
  79                     graph.claimValue(s, newValue);
  80                 }
  81             });
  82         } catch (Throwable e) {
  83             fail("Write transaction threw an unknown exception " + e);
  84         }
  85
  86         support.undo(session, 1);
  87
  88         try {
  89             session.syncRequest(new ReadRequest() {
  90                 @Override
  91                 public void run(ReadGraph graph) throws DatabaseException {
  92                     Resource s = subject.get();
  93                     String t = graph.getValue(s, Bindings.STRING);
  94                     if (!t.equals(value))
  95                         fail("Failed to verify modifications (value).");
  96                 }
  97             });
  98         } catch (Throwable e) {
  99             fail("Read transaction threw an unexpected exception " + e);
 100         }
 101
 102     }
 103
 104 }