| /* |
| * Copyright (c) 2012, 2017, 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 6907737 |
| * @summary Tests that walkFileTree is consistent with the native find program |
| * @requires (os.family != "windows") |
| * @library /test/lib |
| * @build jdk.test.lib.Utils |
| * jdk.test.lib.Asserts |
| * jdk.test.lib.JDKToolFinder |
| * jdk.test.lib.JDKToolLauncher |
| * jdk.test.lib.Platform |
| * jdk.test.lib.process.* |
| * CreateFileTree |
| * @run testng/othervm -Djava.io.tmpdir=. FindTest |
| */ |
| |
| import java.io.IOException; |
| import java.nio.file.FileSystemLoopException; |
| import java.nio.file.FileVisitOption; |
| import java.nio.file.FileVisitResult; |
| import java.nio.file.FileVisitor; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| |
| import org.testng.annotations.BeforeClass; |
| import org.testng.annotations.Test; |
| |
| import static org.testng.Assert.assertEquals; |
| import static org.testng.Assert.assertTrue; |
| |
| public class FindTest { |
| |
| private static final Random rand = new Random(); |
| private static final boolean isAIX = System.getProperty("os.name").equals("AIX"); |
| private static Path top; |
| private static String TOP; |
| |
| @BeforeClass |
| public static void createFileTree() throws Exception { |
| top = CreateFileTree.create(); |
| TOP = top.toAbsolutePath().toString(); |
| } |
| |
| @Test |
| public void printTreeTest() throws Throwable { |
| // print the file tree and compare output with find(1) |
| assertOutputEquals(printFileTree(top), runFind("find", TOP)); |
| } |
| |
| @Test |
| public void printTreeFollowLinkTest() throws Throwable { |
| // print the file tree, following links, and compare output with find(1). |
| |
| // On AIX "find -follow" may core dump on recursive links without '-L' |
| // see: http://www-01.ibm.com/support/docview.wss?uid=isg1IV28143 |
| String[] cmds = isAIX |
| ? new String[]{"find", "-L", TOP, "-follow"} |
| : new String[]{"find", TOP, "-follow"}; |
| OutputAnalyzer expected = runFind(cmds); |
| |
| // Some versions of find(1) output cycles (sym links to ancestor |
| // directories), other versions do not. For that reason we run |
| // PrintFileTree with the -printCycles option when the output without |
| // this option differs to find(1). |
| try { |
| assertOutputEquals(printFileTree(top, "-follow"), expected); |
| } catch (AssertionError x) { |
| assertOutputEquals(printFileTree(top, "-follow", "-printCycles"), expected); |
| } |
| } |
| |
| private void assertOutputEquals(List<String> actual, OutputAnalyzer expected) |
| throws IOException { |
| List<String> expectedList = Arrays.asList(expected.getStdout() |
| .split(System.lineSeparator())); |
| assertEquals(actual.size(), expectedList.size()); |
| assertTrue(actual.removeAll(expectedList)); |
| } |
| |
| private OutputAnalyzer runFind(String... cmds) throws Throwable { |
| return ProcessTools.executeCommand(cmds); |
| } |
| |
| /** |
| * Invokes Files.walkFileTree to traverse a file tree and prints |
| * each of the directories and files. The -follow option causes symbolic |
| * links to be followed and the -printCycles option will print links |
| * where the target of the link is an ancestor directory. |
| */ |
| private static List<String> printFileTree(Path dir, String... opts) throws Exception { |
| List<Path> fileTreeList = new ArrayList<>(); |
| |
| List<String> optsList = Arrays.asList(opts); |
| boolean followLinks = optsList.contains("-follow"); |
| boolean reportCycles = optsList.contains("-printCycles"); |
| |
| Set<FileVisitOption> options = new HashSet<>(); |
| if (followLinks) |
| options.add(FileVisitOption.FOLLOW_LINKS); |
| |
| Files.walkFileTree(dir, options, Integer.MAX_VALUE, new FileVisitor<Path>() { |
| @Override |
| public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { |
| fileTreeList.add(dir); |
| return FileVisitResult.CONTINUE; |
| } |
| @Override |
| public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { |
| fileTreeList.add(file); |
| return FileVisitResult.CONTINUE; |
| } |
| @Override |
| public FileVisitResult postVisitDirectory(Path dir, IOException exc) |
| throws IOException |
| { |
| if (exc != null) |
| throw exc; |
| return FileVisitResult.CONTINUE; |
| } |
| @Override |
| public FileVisitResult visitFileFailed(Path file, IOException exc) |
| throws IOException |
| { |
| if (followLinks && (exc instanceof FileSystemLoopException)) { |
| if (reportCycles) |
| fileTreeList.add(file); |
| return FileVisitResult.CONTINUE; |
| } else { |
| throw exc; |
| } |
| } |
| }); |
| |
| return fileTreeList.stream() |
| .map(f -> f.toAbsolutePath().toString()) |
| .collect(Collectors.toCollection(ArrayList::new)); |
| } |
| } |