/* Copyright (c) 2007 Timothy Wall, All Rights Reserved
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* <p/>
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package com.sun.jna.platform.win32;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import junit.framework.TestCase;
import com.sun.jna.Platform;
import com.sun.jna.platform.FileMonitor;
import com.sun.jna.platform.FileMonitor.FileEvent;
import com.sun.jna.platform.FileMonitor.FileListener;
public class W32FileMonitorTest extends TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(W32FileMonitorTest.class);
}
private Map<Integer, FileEvent> events;
private FileMonitor monitor;
private File tmpdir;
protected void setUp() throws Exception {
events = new HashMap<Integer, FileEvent>();
final FileListener listener = new FileListener() {
public void fileChanged(FileEvent e) {
events.put(new Integer(e.getType()), e);
}
};
monitor = FileMonitor.getInstance();
monitor.addFileListener(listener);
tmpdir = new File(Kernel32Util.getTempPath());
}
protected void tearDown() {
if (monitor != null) {
monitor.dispose();
}
}
public void testNotifyOnFileCreation() throws Exception {
monitor.addWatch(tmpdir);
File file = File.createTempFile(getName(), ".tmp", tmpdir);
file.deleteOnExit();
assertFileEventCreated(file);
}
public void testNotifyOnFileDelete() throws Exception {
monitor.addWatch(tmpdir);
File file = File.createTempFile(getName(), ".tmp", tmpdir);
file.delete();
final FileEvent event = waitForFileEvent(FileMonitor.FILE_DELETED);
assertNotNull("No delete event: " + events, event);
assertEquals("Wrong target file for event", file, event.getFile());
}
public void testNotifyOnFileDeleteViaAddWatchMask() throws Exception {
if (!Platform.isWindows()) return;
monitor.addWatch(tmpdir, FileMonitor.FILE_DELETED);
File file = File.createTempFile(getName(), ".tmp", tmpdir);
file.delete();
final FileEvent event = waitForFileEvent(FileMonitor.FILE_DELETED);
assertNotNull("No delete event: " + events, event);
assertEquals("Wrong target file for event", file, event.getFile());
}
public void testNotifyOnFileRename() throws Exception {
monitor.addWatch(tmpdir);
File file = File.createTempFile(getName(), ".tmp", tmpdir);
File newFile = new File(file.getParentFile(), "newfile");
newFile.deleteOnExit();
file.deleteOnExit();
file.renameTo(newFile);
final FileEvent eventFilenameOld = waitForFileEvent(FileMonitor.FILE_NAME_CHANGED_OLD);
final FileEvent eventFilenameNew = waitForFileEvent(FileMonitor.FILE_NAME_CHANGED_NEW);
assertNotNull("No rename event (old): " + events, eventFilenameOld);
assertNotNull("No rename event (new): " + events, eventFilenameNew);
assertEquals("Wrong target file for event (old)", file, eventFilenameOld.getFile());
assertEquals("Wrong target file for event (new)", newFile, eventFilenameNew.getFile());
}
public void testNotifyOnFileModification() throws Exception {
if (!Platform.isWindows()) return;
monitor.addWatch(tmpdir);
File file = File.createTempFile(getName(), ".tmp", tmpdir);
file.deleteOnExit();
final FileOutputStream os = new FileOutputStream(file);
try {
os.write(getName().getBytes());
} finally {
os.close();
}
final FileEvent event = waitForFileEvent(FileMonitor.FILE_MODIFIED);
assertNotNull("No file modified event: " + events, event);
assertEquals("Wrong target file for event (old)", file, event.getFile());
}
private void delete(File file) {
if (file.isDirectory()) {
File[] files = file.listFiles();
for (int i=0;i < files.length;i++) {
delete(files[i]);
}
}
file.delete();
}
private File createSubdir(File dir, String name) throws IOException {
File f = File.createTempFile(name, ".tmp", dir);
f.delete();
f.mkdirs();
return f;
}
public void testMultipleWatches() throws Exception {
File subdir1 = createSubdir(tmpdir, "sub1-");
File subdir2 = createSubdir(tmpdir, "sub2-");
try {
monitor.addWatch(subdir1);
monitor.addWatch(subdir2);
// trigger change in dir 1
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir1));
// trigger change in dir 2
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir2));
// trigger change in dir 1
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir1));
}
finally {
delete(subdir1);
delete(subdir2);
}
}
public void testMultipleConsecutiveWatches() throws Exception {
File subdir1 = createSubdir(tmpdir, "sub1-");
File subdir2 = createSubdir(tmpdir, "sub2-");
try {
monitor.addWatch(subdir1);
monitor.addWatch(subdir2);
// trigger change in dir 1
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir1));
monitor.removeWatch(subdir1);
// trigger change in dir 2
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir2));
monitor.removeWatch(subdir2);
monitor.addWatch(subdir1);
// assertion below has intermittent failures on slow W2K box w/out sleep
Thread.sleep(10);
// trigger change in dir 1
assertFileEventCreated(File.createTempFile(getName(), ".tmp", subdir1));
monitor.removeWatch(subdir1);
}
finally {
delete(subdir1);
delete(subdir2);
}
}
private void assertFileEventCreated(final File expectedFile)
throws InterruptedException {
final FileEvent actualEvent = waitForFileEvent(FileMonitor.FILE_CREATED);
assertNotNull("No creation event: " + events, actualEvent);
assertEquals("Wrong target file for event", expectedFile, actualEvent.getFile());
events.clear();
}
private FileEvent waitForFileEvent(final int expectedFileEvent)
throws InterruptedException {
final Integer expectedFileEventInteger = new Integer(expectedFileEvent);
FileEvent actualEvent = (FileEvent)events.get(expectedFileEventInteger);
final long start = System.currentTimeMillis();
while (System.currentTimeMillis() - start < 5000 && actualEvent == null) {
Thread.sleep(10);
actualEvent = (FileEvent) events.get(expectedFileEventInteger);
}
assertTrue("No events sent", events.size() != 0);
return actualEvent;
}
}