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8379535: test/jdk/java/io/File/ListRoots.java fails with RuntimeException: Does not match FileSystem::getRootDirectories

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Reviewed-by: alanb
This commit is contained in:
Brian Burkhalter 2026-06-01 17:48:51 +00:00
parent b2bf91bf12
commit a23ce9cd30
1 changed files with 46 additions and 20 deletions
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66
test/jdk/java/io/File/ListRoots.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1998, 2023, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2026, 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
@ -24,9 +24,11 @@
/* @test
@bug 4071322
@summary Basic test for File.listRoots method
@run junit ListRoots
*/
import java.io.File;
import java.io.IOException;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
@ -35,33 +37,57 @@ import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.condition.DisabledOnOs;
import org.junit.jupiter.api.condition.EnabledOnOs;
import org.junit.jupiter.api.condition.OS;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class ListRoots {
public static void main(String[] args) throws Exception {
private static Set<File> expectedSet;
private static Set<File> actualSet;
@BeforeAll
public static void init() throws IOException {
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");
System.err.println(i + ": " + rs[i]);
}
// 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");
}
expectedSet =
StreamSupport.stream(fs.getRootDirectories().spliterator(), false)
.map(Path::toFile)
.collect(Collectors.toSet());
actualSet = Stream.of(rs).collect(Collectors.toSet());
}
@Test
public void checkRoot() throws IOException {
File f = new File(System.getProperty("user.dir"));
String cp = f.getCanonicalPath();
boolean found = Stream.of(File.listRoots())
.map(File::getPath)
.anyMatch(p -> cp.startsWith(p));
assertTrue(found, cp + " does not have a recognized root");
}
@Test
@DisabledOnOs(OS.WINDOWS)
public void listRootsUnix() throws IOException {
assertEquals(expectedSet, actualSet,
"Does not equal FileSystem::getRootDirectories");
}
@Test
@EnabledOnOs(OS.WINDOWS)
public void listRootsWindows() throws IOException {
assertTrue(expectedSet.stream().anyMatch(actualSet::contains),
"Does not intersect FileSystem::getRootDirectories");
}
}