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/*
* Copyright (c) 1998, 2023, 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
@bug 4071322
@summary Basic test for File.listRoots method
*/
import java.io.File;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
public class ListRoots {
public static void main(String[] args) throws Exception {
File[] rs = File.listRoots();
for (int i = 0; i < rs.length; i++) {
System.out.println(i + ": " + rs[i]);
}
File f = new File(System.getProperty("test.src", "."), "ListRoots.java");
String cp = f.getCanonicalPath();
boolean found = Stream.of(rs)
.map(File::getPath)
.anyMatch(p -> cp.startsWith(p));
if (!found) {
throw new RuntimeException(cp + " does not have a recognized root");
}
// the list of roots should match FileSystem::getRootDirectories
Set<File> roots1 = Stream.of(rs).collect(Collectors.toSet());
FileSystem fs = FileSystems.getDefault();
Set<File> roots2 = StreamSupport.stream(fs.getRootDirectories().spliterator(), false)
.map(Path::toFile)
.collect(Collectors.toSet());
if (!roots1.equals(roots2)) {
System.out.println(roots2);
throw new RuntimeException("Does not match FileSystem::getRootDirectories");
}
}
}
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