tests/org.simantics.db.tests/src/org/simantics/db/tests/api/support/undoRedoSupport/UndoTest20.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  * Tests undo of deletion of large literal when done twice in sequence.
  32  * This was added because of Bug #4591.
  33  */
  34 public class UndoTest20 extends ExistingDatabaseTest {
  35     private void initValue(byte[] value) {
  36         for (int i=0; i<value.length; ++i)
  37             value[i] = (byte)i;
  38     }
  39
  40     @Test
  41     public void testUndo20() throws Exception {
  42         Session session = getSession();
  43         final byte[] value = new byte[100000];
  44         initValue(value);
  45         final DataContainer<Resource> subject1 = new DataContainer<Resource>();
  46         try {
  47             session.syncRequest(new WriteRequest() {
  48                 @Override
  49                 public void perform(WriteGraph graph) throws DatabaseException {
  50                     graph.markUndoPoint();
  51                     Layer0 b = Layer0.getInstance(graph);
  52                     Resource s1 = graph.newResource();
  53                     graph.claim(s1, b.InstanceOf, b.Entity);
  54                     graph.claimValue(s1, value);
  55                     subject1.set(s1);
  56                 }
  57             });
  58         } catch (Throwable e) {
  59             fail("Write transaction threw an unknown exception ", e);
  60         }
  61         testUndo(session, value, subject1);
  62         testUndo(session, value, subject1);
  63     }
  64     public void testUndo(final Session session, final byte[] value, final DataContainer<Resource> subject1)
  65     throws Exception {
  66         final UndoRedoSupport support = session.getService(UndoRedoSupport.class);
  67         try {
  68             session.syncRequest(new ReadRequest() {
  69                 @Override
  70                 public void run(ReadGraph graph) throws DatabaseException {
  71                     Resource s1 = subject1.get();
  72                     byte[] t1 = graph.getValue(s1, Bindings.BYTE_ARRAY);
  73                     if (!Arrays.equals(t1, value))
  74                         fail("Failed to verify value.");
  75                 }
  76             });
  77         } catch (Throwable e) {
  78             fail("Read transaction threw an unexpected exception ", e);
  79         }
  80         try {
  81             session.syncRequest(new WriteRequest() {
  82                 @Override
  83                 public void perform(WriteGraph graph) throws DatabaseException {
  84                     graph.markUndoPoint();
  85                     Resource s1 = subject1.get();
  86                     graph.denyValue(s1);
  87                 }
  88             });
  89         } catch (Throwable e) {
  90             fail("Write transaction threw an unknown exception ", e);
  91         }
  92         try {
  93             session.syncRequest(new ReadRequest() {
  94                 @Override
  95                 public void run(ReadGraph graph) throws DatabaseException {
  96                     Resource s1 = subject1.get();
  97                     byte[] t1 = graph.getPossibleValue(s1, Bindings.BYTE_ARRAY);
  98                     if (null != t1)
  99                         fail("Failed to verify delettion of value.");
 100                 }
 101             });
 102         } catch (Throwable e) {
 103             fail("Read transaction threw an unexpected exception ", e);
 104         }
 105         try {
 106             support.undo(session, 1);
 107         } catch (Throwable e) {
 108             fail("Undo operation threw an unexpected exception.", e);
 109         }
 110         try {
 111             session.syncRequest(new ReadRequest() {
 112                 @Override
 113                 public void run(ReadGraph graph) throws DatabaseException {
 114                     Resource s1 = subject1.get();
 115                     byte[] t1 = graph.getValue(s1, Bindings.BYTE_ARRAY);
 116                     if (!Arrays.equals(t1, value))
 117                         fail("Failed to verify value1.");
 118                 }
 119             });
 120         } catch (Throwable e) {
 121             fail("Read transaction threw an unexpected exception ", e);
 122         }
 123     }
 124 }