bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestDirectoryWatch.java

   1 /*******************************************************************************
   2  * Copyright (c) 2010- Association for Decentralized Information Management in
   3  * 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.databoard.tests;
  13
  14 import java.io.File;
  15 import java.io.FileFilter;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18 import java.util.Random;
  19
  20 import junit.framework.TestCase;
  21
  22 import org.simantics.databoard.accessor.impl.DirectoryWatch;
  23 import org.simantics.databoard.accessor.impl.DirectoryWatch.DirectoryEvent;
  24 import org.simantics.databoard.accessor.impl.DirectoryWatch.DirectoryListener;
  25
  26 /**
  27  * This test case tests Wathc Servlet.
  28  *
  29  * It creates a random named directory under $TMP$
  30  * There it
  31  *
  32  * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
  33  */
  34 public class TestDirectoryWatch extends TestCase {
  35
  36         File tmpDir;
  37
  38         public static File createTmpDir()
  39         {
  40                 String tmp = System.getenv("tmp");
  41                 if (tmp==null) tmp = "c:/temp";
  42                 Random r = new Random();
  43                 String randomName = "tmp-"+(r.nextInt(10000)+10000);
  44                 File tmpDir = new File(tmp+"/"+randomName);
  45                 Boolean ok = tmpDir.mkdirs();
  46                 assertTrue( ok );
  47                 return tmpDir;
  48         }
  49
  50         public void setUp() throws Exception {
  51                 tmpDir = createTmpDir();
  52         }
  53
  54         @Override
  55         protected void tearDown() throws Exception {
  56                 boolean ok = tmpDir.delete();
  57                 if (!ok) System.err.println(tmpDir+" was not removed.");
  58         }
  59
  60         public void testAll()
  61         throws Exception {
  62
  63                 FileFilter filter = new FileFilter() {
  64                         public boolean accept(File pathname) {
  65                                 return pathname.getAbsolutePath().toLowerCase().endsWith(".dbb");
  66                         }};
  67
  68                 DirectoryWatch monitor = new DirectoryWatch(tmpDir, filter);
  69
  70                 final DirectoryEvent result = new DirectoryEvent();
  71
  72                 // Set listener that collects changes
  73                 monitor.addListener(new DirectoryListener() {
  74                         @Override
  75                         public void onWatchEvent(DirectoryEvent e) {
  76                                 result.filesAdded.addAll(e.filesAdded);
  77                                 result.filesRemoved.addAll(e.filesRemoved);
  78                         }});
  79
  80                 // Create file names
  81                 List<File> files = new ArrayList<File>();
  82                 for (int i=1; i<10; i++) {
  83                         files.add( new File(tmpDir, "file-"+i+".dbb") );
  84                 }
  85
  86                 // Create files
  87                 for (File f : files)
  88                 {
  89                         f.createNewFile();
  90                 }
  91                 Thread.sleep( DirectoryWatch.POLL_INTERVAL*2 );
  92                 assertTrue( files.containsAll( result.filesAdded ) );
  93                 assertTrue( result.filesAdded.containsAll( files ) );
  94                 assertTrue( result.filesRemoved.isEmpty() );
  95                 result.filesAdded.clear();
  96
  97                 // Delete files
  98                 for (File f : files)
  99                         f.delete();
 100                 Thread.sleep( DirectoryWatch.POLL_INTERVAL*2 );
 101                 assertTrue( files.containsAll( result.filesRemoved ) );
 102                 assertTrue( result.filesRemoved.containsAll( files ) );
 103                 assertTrue( result.filesAdded.isEmpty() );
 104                 result.filesRemoved.clear();
 105
 106                 monitor.close();
 107         }
 108
 109 }
 110