tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/exception/GraphSyncReadWithProcedureThrowsNoSingleResultException.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.request.exception;
  13
  14 import org.junit.Test;
  15 import org.simantics.db.ReadGraph;
  16 import org.simantics.db.Session;
  17 import org.simantics.db.exception.DatabaseException;
  18 import org.simantics.db.exception.NoSingleResultException;
  19 import org.simantics.db.procedure.Procedure;
  20 import org.simantics.db.request.Read;
  21 import org.simantics.db.testing.base.ExistingDatabaseTest;
  22 import org.simantics.layer0.Layer0;
  23
  24 public class GraphSyncReadWithProcedureThrowsNoSingleResultException extends ExistingDatabaseTest {
  25
  26     private String failure = null;
  27
  28         @Test
  29         public void test() throws Exception {
  30
  31                 Session session = getSession();
  32
  33                 try {
  34
  35                 session.syncRequest(new Read<Object>() {
  36
  37                         @Override
  38                         public Object perform(ReadGraph graph) throws DatabaseException {
  39
  40                             graph.syncRequest(new Read<Object>() {
  41
  42                         @Override
  43                         public Object perform(ReadGraph graph) throws DatabaseException {
  44                             Layer0 b = Layer0.getInstance(graph);
  45                             return graph.getSingleObject(graph.getRootLibrary(), b.Inherits);
  46                         }
  47
  48                             }, new Procedure<Object>() {
  49
  50                         @Override
  51                         public void exception(Throwable t) {
  52
  53                             if(!(t instanceof NoSingleResultException)) failure = "syncRequest did not throw a correct exception";
  54
  55                                     if (DEBUG)
  56                                         t.printStackTrace();
  57
  58                         }
  59
  60                         @Override
  61                         public void execute(Object result) {
  62
  63                             failure = "Execute was called with " + result;
  64
  65                         }
  66
  67                             });
  68
  69                             return null;
  70
  71                         }
  72
  73                 });
  74
  75                 } catch(DatabaseException e) {
  76
  77             if(failure != null) fail(failure);
  78
  79                     if (DEBUG)
  80                         e.printStackTrace();
  81
  82                     return;
  83
  84                 } catch(Throwable t) {
  85
  86                 fail("syncRequest threw unexpected throwable " + t);
  87
  88                 }
  89
  90                 fail("syncRequest did not throw");
  91
  92         }
  93
  94 }