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/*
* Copyright (c) 2008, 2013, 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.
*/
/*
* @test
* @summary Unit test for Files.walkFileTree to test TERMINATE return value
* @library ../..
* @compile TerminateWalk.java CreateFileTree.java
* @run main TerminateWalk
* @key randomness
*/
import java.nio.file.*;
import java.nio.file.attribute.*;
import java.io.IOException;
import java.util.*;
public class TerminateWalk {
static final Random rand = new Random();
static boolean terminated;
static FileVisitResult maybeTerminate() {
if (terminated)
throw new RuntimeException("FileVisitor invoked after termination");
if (rand.nextInt(10) == 0) {
terminated = true;
return FileVisitResult.TERMINATE;
} else {
return FileVisitResult.CONTINUE;
}
}
public static void main(String[] args) throws Exception {
Path top = CreateFileTree.create();
try {
test(top);
} finally {
TestUtil.removeAll(top);
}
}
static void test(Path start) throws IOException {
Files.walkFileTree(start, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
return maybeTerminate();
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
return maybeTerminate();
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException x) {
return maybeTerminate();
}
});
}
}
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