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/*
* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/*
* @test
* @bug 8305072
* @requires (os.family == "windows")
* @modules java.desktop/sun.awt.shell
* @summary Verifies consistency of Win32ShellFolder2.compareTo
* @run main/othervm --add-opens java.desktop/sun.awt.shell=ALL-UNNAMED Win32FolderSort
*/
public class Win32FolderSort {
public static void main(String[] args) throws Exception {
Class<?> folderManager = Class.forName("sun.awt.shell.Win32ShellFolderManager2");
Class<?> folder = Class.forName("sun.awt.shell.Win32ShellFolder2");
Method getDesktop = folderManager.getDeclaredMethod("getDesktop");
getDesktop.setAccessible(true);
Method getPersonal = folderManager.getDeclaredMethod("getPersonal");
getPersonal.setAccessible(true);
Method createShellFolder = folderManager.getDeclaredMethod("createShellFolder", folder, File.class);
createShellFolder.setAccessible(true);
Method isFileSystem = folder.getMethod("isFileSystem");
isFileSystem.setAccessible(true);
Method isSpecial = folder.getMethod("isSpecial");
isSpecial.setAccessible(true);
Method getChildByPath = folder.getDeclaredMethod("getChildByPath", String.class);
getChildByPath.setAccessible(true);
File desktop = (File) getDesktop.invoke(null);
File personal = (File) getPersonal.invoke(null);
if (!((Boolean) isSpecial.invoke(personal))) {
throw new RuntimeException("personal is not special");
}
File fakePersonal = (File) getChildByPath.invoke(desktop, personal.getPath());
if (fakePersonal == null) {
fakePersonal = (File) createShellFolder.invoke(null, desktop,
new File(personal.getPath()));
}
if ((Boolean) isSpecial.invoke(fakePersonal)) {
throw new RuntimeException("fakePersonal is special");
}
File homeDir = (File) createShellFolder.invoke(null, desktop,
new File(System.getProperty("user.home")));
File[] files = {fakePersonal, personal, homeDir};
for (File f : files) {
if (!((Boolean) isFileSystem.invoke(f))) {
throw new RuntimeException(f + " is not on file system");
}
}
List<String> errors = new ArrayList<>(2);
for (File f1 : files) {
for (File f2 : files) {
for (File f3 : files) {
String result = verifyCompareTo(f1, f2, f3);
if (result != null) {
String error = result + "\nwhere"
+ "\n a = " + formatFile(f1, isSpecial)
+ "\n b = " + formatFile(f2, isSpecial)
+ "\n c = " + formatFile(f3, isSpecial);
errors.add(error);
}
}
}
}
System.out.println("Unsorted:");
for (File f : files) {
System.out.println(formatFile(f, isSpecial));
}
System.out.println();
Arrays.sort(files);
System.out.println("Sorted:");
for (File f : files) {
System.out.println(formatFile(f, isSpecial));
}
if (!errors.isEmpty()) {
System.err.println("Implementation of Win32ShellFolder2.compareTo is inconsistent:");
errors.forEach(System.err::println);
throw new RuntimeException("Inconsistencies found: " + errors.size()
+ " - " + errors.get(0));
}
}
/**
* Verifies consistency of {@code Comparable} implementation.
*
* @param a the first object
* @param b the second object
* @param c the third object
* @return error message if inconsistency is found,
* or {@code null } otherwise
*/
private static String verifyCompareTo(File a, File b, File c) {
// a < b & b < c => a < c
if (a.compareTo(b) < 0 && b.compareTo(c) < 0) {
if (a.compareTo(c) >= 0) {
return "a < b & b < c but a >= c";
}
}
// a > b & b > c => a > c
if (a.compareTo(b) > 0 && b.compareTo(c) > 0) {
if (a.compareTo(c) <= 0) {
return "a > b & b > c but a <= c";
}
}
// a = b & b = c => a = c
if (a.compareTo(b) == 0 && b.compareTo(c) == 0) {
if (a.compareTo(c) != 0) {
return "a = b & b = c but a != c";
}
}
return null;
}
private static String formatFile(File f, Method isSpecial)
throws InvocationTargetException, IllegalAccessException {
return f + "(" + isSpecial.invoke(f) + ")";
}
}
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