tests/org.simantics.db.tests/src/org/simantics/db/tests/api/support/undoRedoSupport/UndoTest16.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 java.util.Arrays;
  15
  16 import org.junit.Test;
  17 import org.simantics.databoard.Bindings;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.WriteGraph;
  22 import org.simantics.db.common.request.ReadRequest;
  23 import org.simantics.db.common.request.WriteRequest;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.db.service.UndoRedoSupport;
  26 import org.simantics.db.testing.base.ExistingDatabaseTest;
  27 import org.simantics.layer0.Layer0;
  28 import org.simantics.utils.DataContainer;
  29
  30 /**
  31  * Test case description missing!
  32  */
  33 public class UndoTest16 extends ExistingDatabaseTest {
  34     private void initValue(byte[] value) {
  35         for (int i=0; i<value.length; ++i)
  36             value[i] = (byte)i;
  37     }
  38         @Test
  39     public void testUndo16() throws Exception {
  40
  41         Session session = getSession();
  42         final UndoRedoSupport support = session.getService(UndoRedoSupport.class);
  43         final DataContainer<Resource> subject = new DataContainer<Resource>();
  44         final byte[] value = new byte[100000];
  45         final byte[] newValue = new byte[200000];
  46
  47         try {
  48             initValue(value);
  49             initValue(newValue);
  50             session.syncRequest(new WriteRequest() {
  51                 @Override
  52                 public void perform(WriteGraph graph) throws DatabaseException {
  53                     graph.markUndoPoint();
  54                     // Use any non-functional relation
  55                     Layer0 b = Layer0.getInstance(graph);
  56                     Resource s = graph.newResource();
  57                     graph.claim(s, b.InstanceOf, b.Entity);
  58                     graph.claimValue(s, value);
  59                     subject.set(s);
  60                 }
  61             });
  62         } catch (Throwable e) {
  63             fail("Write transaction threw an unknown exception " + e);
  64         }
  65
  66         try {
  67             session.syncRequest(new ReadRequest() {
  68                 @Override
  69                 public void run(ReadGraph graph) throws DatabaseException {
  70                     Resource s = subject.get();
  71                     if (!graph.hasStatement(s))
  72                         fail("Failed to verify modifications (stm).");
  73                     byte[] t = graph.getValue(s, Bindings.BYTE_ARRAY);
  74                     if (!Arrays.equals(t, value))
  75                         fail("Failed to verify modifications (value).");
  76                 }
  77             });
  78         } catch (Throwable e) {
  79             fail("Read transaction threw an unexpected exception " + e);
  80         }
  81
  82         try {
  83             session.syncRequest(new WriteRequest() {
  84                 @Override
  85                 public void perform(WriteGraph graph) throws DatabaseException {
  86                     graph.markUndoPoint();
  87                     Resource s = subject.get();
  88                     graph.claimValue(s, newValue);
  89                 }
  90             });
  91         } catch (Throwable e) {
  92             fail("Write transaction threw an unknown exception " + e);
  93         }
  94
  95         support.undo(session, 1);
  96
  97         try {
  98             session.syncRequest(new ReadRequest() {
  99                 @Override
 100                 public void run(ReadGraph graph) throws DatabaseException {
 101                     Resource s = subject.get();
 102                     byte[] t = graph.getValue(s, Bindings.BYTE_ARRAY);
 103                     if (!Arrays.equals(t, value))
 104                         fail("Failed to verify modifications (value).");
 105                 }
 106             });
 107         } catch (Throwable e) {
 108             fail("Read transaction threw an unexpected exception " + e);
 109         }
 110
 111         support.undo(session, 1);
 112
 113         try {
 114             session.syncRequest(new ReadRequest() {
 115                 @Override
 116                 public void run(ReadGraph graph) throws DatabaseException {
 117                     Resource s = subject.get();
 118                     byte[] t = graph.getPossibleValue(s, Bindings.BYTE_ARRAY);
 119                     if (null != t)
 120                         fail("Failed to verify modifications (value).");
 121                 }
 122             });
 123         } catch (Throwable e) {
 124             fail("Read transaction threw an unexpected exception " + e);
 125         }
 126     }
 127 }