1 /* 2 * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import java.nio.file.*; 25 import java.nio.file.attribute.BasicFileAttributes; 26 import java.util.Random; 27 import java.io.IOException; 28 29 public class TestUtil { TestUtil()30 private TestUtil() { 31 } 32 createTemporaryDirectory(String where)33 static Path createTemporaryDirectory(String where) throws IOException { 34 Path dir = FileSystems.getDefault().getPath(where); 35 return Files.createTempDirectory(dir, "name"); 36 } 37 createTemporaryDirectory()38 static Path createTemporaryDirectory() throws IOException { 39 return Files.createTempDirectory("name"); 40 } 41 removeAll(Path dir)42 static void removeAll(Path dir) throws IOException { 43 Files.walkFileTree(dir, new FileVisitor<Path>() { 44 @Override 45 public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) { 46 return FileVisitResult.CONTINUE; 47 } 48 @Override 49 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { 50 try { 51 Files.delete(file); 52 } catch (IOException x) { 53 System.err.format("Unable to delete %s: %s\n", file, x); 54 } 55 return FileVisitResult.CONTINUE; 56 } 57 @Override 58 public FileVisitResult postVisitDirectory(Path dir, IOException exc) { 59 try { 60 Files.delete(dir); 61 } catch (IOException x) { 62 System.err.format("Unable to delete %s: %s\n", dir, x); 63 } 64 return FileVisitResult.CONTINUE; 65 } 66 @Override 67 public FileVisitResult visitFileFailed(Path file, IOException exc) { 68 System.err.format("Unable to visit %s: %s\n", file, exc); 69 return FileVisitResult.CONTINUE; 70 } 71 }); 72 } 73 deleteUnchecked(Path file)74 static void deleteUnchecked(Path file) { 75 try { 76 Files.delete(file); 77 } catch (IOException exc) { 78 System.err.format("Unable to delete %s: %s\n", file, exc); 79 } 80 } 81 82 /** 83 * Creates a directory tree in the given directory so that the total 84 * size of the path is more than 2k in size. This is used for long 85 * path tests on Windows. 86 */ createDirectoryWithLongPath(Path dir)87 static Path createDirectoryWithLongPath(Path dir) 88 throws IOException 89 { 90 StringBuilder sb = new StringBuilder(); 91 for (int i=0; i<240; i++) { 92 sb.append('A'); 93 } 94 String name = sb.toString(); 95 do { 96 dir = dir.resolve(name).resolve("."); 97 Files.createDirectory(dir); 98 } while (dir.toString().length() < 2048); 99 return dir; 100 } 101 102 /** 103 * Returns true if symbolic links are supported 104 */ supportsLinks(Path dir)105 static boolean supportsLinks(Path dir) { 106 Path link = dir.resolve("testlink"); 107 Path target = dir.resolve("testtarget"); 108 try { 109 Files.createSymbolicLink(link, target); 110 Files.delete(link); 111 return true; 112 } catch (UnsupportedOperationException x) { 113 return false; 114 } catch (IOException x) { 115 return false; 116 } 117 } 118 } 119