/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.tests.api.request.exception;

import org.junit.Test;
import org.simantics.db.AsyncReadGraph;
import org.simantics.db.ReadGraph;
import org.simantics.db.Session;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.procedure.AsyncProcedure;
import org.simantics.db.request.AsyncRead;
import org.simantics.db.request.Read;
import org.simantics.db.testing.base.ExistingDatabaseTest;

public class GraphSyncAsyncReadPassesDatabaseException extends ExistingDatabaseTest {
	
	private Exception exception; 
	
	@Test
	public void testWriteException() throws Exception {
		
		Session session = getSession();
		
		session.syncRequest(new Read<Object>() {

            @Override
            public Object perform(ReadGraph graph) throws DatabaseException {
                
                try {

                    graph.syncRequest(new AsyncRead<Object>() {

                        @Override
                        public void perform(AsyncReadGraph graph, AsyncProcedure<Object> procedure) {
                            exception = new DatabaseException();
                            procedure.exception(graph, exception);
                        }

                        @Override
            		    public int threadHash() {
            		    	return hashCode();
            		    }

                        @Override
                        public int getFlags() {
                            return 0;
                        }

                    });
                
                } catch (Throwable e) {

                    if(!e.equals(exception)) {
                        fail("Write transaction threw an unknown exception " + e);
                    }
                    
        			if (DEBUG)
        				e.printStackTrace();
                    
                    return null;

                }
                
                fail("Write transaction did not throw an exception.");

                return null;

            }
		    
		});
		
	}

}