| /* |
| * Copyright (c) 2008, 2011, 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 4313887 6838333 6863864 |
| * @summary Unit test for java.nio.file.Files createSymbolicLink, |
| * readSymbolicLink, and createLink methods |
| * @library .. |
| * @build Links |
| * @run main/othervm Links |
| */ |
| |
| import java.nio.file.*; |
| import java.nio.file.attribute.*; |
| import java.io.*; |
| |
| public class Links { |
| |
| static final boolean isWindows = |
| System.getProperty("os.name").startsWith("Windows"); |
| |
| static void assertTrue(boolean okay) { |
| if (!okay) |
| throw new RuntimeException("Assertion failed"); |
| } |
| |
| /** |
| * Exercise createSymbolicLink and readLink methods |
| */ |
| static void testSymLinks(Path dir) throws IOException { |
| final Path link = dir.resolve("link"); |
| |
| // Check if sym links are supported |
| try { |
| Files.createSymbolicLink(link, Paths.get("foo")); |
| Files.delete(link); |
| } catch (UnsupportedOperationException x) { |
| // sym links not supported |
| return; |
| } catch (IOException x) { |
| // probably insufficient privileges to create sym links (Windows) |
| return; |
| } |
| |
| // Test links to various targets |
| String[] windowsTargets = |
| { "foo", "C:\\foo", "\\foo", "\\\\server\\share\\foo" }; |
| String[] otherTargets = { "relative", "/absolute" }; |
| |
| String[] targets = (isWindows) ? windowsTargets : otherTargets; |
| for (String s: targets) { |
| Path target = Paths.get(s); |
| Files.createSymbolicLink(link, target); |
| try { |
| assertTrue(Files.readSymbolicLink(link).equals(target)); |
| } finally { |
| Files.delete(link); |
| } |
| } |
| |
| // Test links to directory |
| Path mydir = dir.resolve("mydir"); |
| Path myfile = mydir.resolve("myfile"); |
| try { |
| Files.createDirectory(mydir); |
| Files.createFile(myfile); |
| |
| // link -> "mydir" |
| Files.createSymbolicLink(link, mydir.getFileName()); |
| assertTrue(Files.readSymbolicLink(link).equals(mydir.getFileName())); |
| |
| // Test access to directory via link |
| try (DirectoryStream<Path> stream = Files.newDirectoryStream(link)) { |
| boolean found = false; |
| for (Path entry: stream) { |
| if (entry.getFileName().equals(myfile.getFileName())) { |
| found = true; |
| break; |
| } |
| } |
| assertTrue(found); |
| } |
| |
| // Test link2 -> link -> mydir |
| final Path link2 = dir.resolve("link2"); |
| Path target2 = link.getFileName(); |
| Files.createSymbolicLink(link2, target2); |
| try { |
| assertTrue(Files.readSymbolicLink(link2).equals(target2)); |
| Files.newDirectoryStream(link2).close(); |
| } finally { |
| Files.delete(link2); |
| } |
| |
| // Remove mydir and re-create link2 before re-creating mydir |
| // (This is a useful test on Windows to ensure that creating a |
| // sym link to a directory sym link creates the right type of link). |
| Files.delete(myfile); |
| Files.delete(mydir); |
| Files.createSymbolicLink(link2, target2); |
| try { |
| assertTrue(Files.readSymbolicLink(link2).equals(target2)); |
| Files.createDirectory(mydir); |
| Files.newDirectoryStream(link2).close(); |
| } finally { |
| Files.delete(link2); |
| } |
| |
| } finally { |
| Files.deleteIfExists(myfile); |
| Files.deleteIfExists(mydir); |
| Files.deleteIfExists(link); |
| } |
| } |
| |
| /** |
| * Exercise createLink method |
| */ |
| static void testHardLinks(Path dir) throws IOException { |
| Path foo = dir.resolve("foo"); |
| Files.createFile(foo); |
| try { |
| Path bar = dir.resolve("bar"); |
| try { |
| Files.createLink(bar, foo); |
| } catch (UnsupportedOperationException x) { |
| return; |
| } catch (IOException x) { |
| // probably insufficient privileges (Windows) |
| return; |
| } |
| try { |
| Object key1 = Files.readAttributes(foo, BasicFileAttributes.class).fileKey(); |
| Object key2 = Files.readAttributes(bar, BasicFileAttributes.class).fileKey(); |
| assertTrue((key1 == null) || (key1.equals(key2))); |
| } finally { |
| Files.delete(bar); |
| } |
| |
| |
| } finally { |
| Files.delete(foo); |
| } |
| } |
| |
| public static void main(String[] args) throws IOException { |
| Path dir = TestUtil.createTemporaryDirectory(); |
| try { |
| testSymLinks(dir); |
| testHardLinks(dir); |
| |
| // repeat tests on Windows with long path |
| if (isWindows) { |
| Path dirWithLongPath = null; |
| try { |
| dirWithLongPath = TestUtil.createDirectoryWithLongPath(dir); |
| } catch (IOException x) { |
| System.out.println("Unable to create long path: " + x); |
| } |
| if (dirWithLongPath != null) { |
| System.out.println(""); |
| System.out.println("** REPEAT TESTS WITH LONG PATH **"); |
| testSymLinks(dirWithLongPath); |
| testHardLinks(dirWithLongPath); |
| } |
| } |
| } finally { |
| TestUtil.removeAll(dir); |
| } |
| } |
| } |