FileAttributes.java revision 3471:236e3f2d0a6b 
1/*
2 * Copyright (c) 2008, 2009, 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/* @test
25 * @bug 4313887 6838333
26 * @summary Unit test for java.nio.file.Files
27 * @library ..
28 */
29
30import java.nio.file.*;
31import java.nio.file.attribute.*;
32import java.io.IOException;
33import java.util.*;
34import java.util.concurrent.TimeUnit;
35
36/**
37 * Exercises getAttribute/setAttribute/readAttributes methods.
38 */
39
40public class FileAttributes {
41
42    static void assertTrue(boolean okay) {
43        if (!okay)
44            throw new RuntimeException("Assertion Failed");
45    }
46
47    static void checkEqual(Object o1, Object o2) {
48        if (o1 == null) {
49            assertTrue(o2 == null);
50        } else {
51            assertTrue (o1.equals(o2));
52        }
53    }
54
55    // checks that two time values are within 1s of each other
56    static void checkNearEqual(FileTime t1, FileTime t2) {
57        long diff = Math.abs(t1.toMillis() - t2.toMillis());
58        assertTrue(diff <= 1000);
59    }
60
61    // Exercise getAttribute/setAttribute/readAttributes on basic attributes
62    static void checkBasicAttributes(Path file, BasicFileAttributes attrs)
63        throws IOException
64    {
65        // getAttribute
66        checkEqual(attrs.size(), Files.getAttribute(file, "size"));
67        checkEqual(attrs.lastModifiedTime(), Files.getAttribute(file, "basic:lastModifiedTime"));
68        checkEqual(attrs.lastAccessTime(), Files.getAttribute(file, "lastAccessTime"));
69        checkEqual(attrs.creationTime(), Files.getAttribute(file, "basic:creationTime"));
70        assertTrue((Boolean)Files.getAttribute(file, "isRegularFile"));
71        assertTrue(!(Boolean)Files.getAttribute(file, "basic:isDirectory"));
72        assertTrue(!(Boolean)Files.getAttribute(file, "isSymbolicLink"));
73        assertTrue(!(Boolean)Files.getAttribute(file, "basic:isOther"));
74        checkEqual(attrs.fileKey(), Files.getAttribute(file, "basic:fileKey"));
75
76        // setAttribute
77        FileTime modTime = attrs.lastModifiedTime();
78        Files.setAttribute(file, "basic:lastModifiedTime", FileTime.fromMillis(0L));
79        checkEqual(Files.getLastModifiedTime(file),
80                   FileTime.fromMillis(0L));
81        Files.setAttribute(file, "lastModifiedTime", modTime);
82        checkEqual(Files.getLastModifiedTime(file), modTime);
83
84        Map<String,Object> map;
85        map = Files.readAttributes(file, "*");
86        assertTrue(map.size() >= 9);
87        checkEqual(attrs.isRegularFile(), map.get("isRegularFile")); // check one
88
89        map = Files.readAttributes(file, "basic:*");
90        assertTrue(map.size() >= 9);
91        checkEqual(attrs.lastAccessTime(), map.get("lastAccessTime")); // check one
92
93        map = Files.readAttributes(file, "size,lastModifiedTime");
94        assertTrue(map.size() == 2);
95        checkEqual(attrs.size(), map.get("size"));
96        checkEqual(attrs.lastModifiedTime(), map.get("lastModifiedTime"));
97
98        map = Files.readAttributes(file,
99            "basic:lastModifiedTime,lastAccessTime,ShouldNotExist");
100        assertTrue(map.size() == 2);
101        checkEqual(attrs.lastModifiedTime(), map.get("lastModifiedTime"));
102        checkEqual(attrs.lastAccessTime(), map.get("lastAccessTime"));
103    }
104
105    // Exercise getAttribute/setAttribute/readAttributes on posix attributes
106    static void checkPosixAttributes(Path file, PosixFileAttributes attrs)
107        throws IOException
108    {
109        checkBasicAttributes(file, attrs);
110
111        // getAttribute
112        checkEqual(attrs.permissions(), Files.getAttribute(file, "posix:permissions"));
113        checkEqual(attrs.owner(), Files.getAttribute(file, "posix:owner"));
114        checkEqual(attrs.group(), Files.getAttribute(file, "posix:group"));
115
116        // setAttribute
117        Set<PosixFilePermission> orig = attrs.permissions();
118        Set<PosixFilePermission> newPerms = new HashSet<>(orig);
119        newPerms.remove(PosixFilePermission.OTHERS_READ);
120        newPerms.remove(PosixFilePermission.OTHERS_WRITE);
121        newPerms.remove(PosixFilePermission.OTHERS_EXECUTE);
122        Files.setAttribute(file, "posix:permissions", newPerms);
123        checkEqual(Files.getPosixFilePermissions(file), newPerms);
124        Files.setAttribute(file, "posix:permissions", orig);
125        checkEqual(Files.getPosixFilePermissions(file), orig);
126        Files.setAttribute(file, "posix:owner", attrs.owner());
127        Files.setAttribute(file, "posix:group", attrs.group());
128
129        // readAttributes
130        Map<String,Object> map;
131        map = Files.readAttributes(file, "posix:*");
132        assertTrue(map.size() >= 12);
133        checkEqual(attrs.permissions(), map.get("permissions")); // check one
134
135        map = Files.readAttributes(file, "posix:size,owner,ShouldNotExist");
136        assertTrue(map.size() == 2);
137        checkEqual(attrs.size(), map.get("size"));
138        checkEqual(attrs.owner(), map.get("owner"));
139    }
140
141    // Exercise getAttribute/readAttributes on unix attributes
142    static void checkUnixAttributes(Path file) throws IOException {
143        // getAttribute
144        int mode = (Integer)Files.getAttribute(file, "unix:mode");
145        long ino = (Long)Files.getAttribute(file, "unix:ino");
146        long dev = (Long)Files.getAttribute(file, "unix:dev");
147        long rdev = (Long)Files.getAttribute(file, "unix:rdev");
148        int nlink = (Integer)Files.getAttribute(file, "unix:nlink");
149        int uid = (Integer)Files.getAttribute(file, "unix:uid");
150        int gid = (Integer)Files.getAttribute(file, "unix:gid");
151        FileTime ctime = (FileTime)Files.getAttribute(file, "unix:ctime");
152
153        // readAttributes
154        Map<String,Object> map;
155        map = Files.readAttributes(file, "unix:*");
156        assertTrue(map.size() >= 20);
157
158        map = Files.readAttributes(file, "unix:size,uid,gid,ShouldNotExist");
159        assertTrue(map.size() == 3);
160        checkEqual(map.get("size"),
161                   Files.readAttributes(file, BasicFileAttributes.class).size());
162    }
163
164    // Exercise getAttribute/setAttribute on dos attributes
165    static void checkDosAttributes(Path file, DosFileAttributes attrs)
166        throws IOException
167    {
168        checkBasicAttributes(file, attrs);
169
170        // getAttribute
171        checkEqual(attrs.isReadOnly(), Files.getAttribute(file, "dos:readonly"));
172        checkEqual(attrs.isHidden(), Files.getAttribute(file, "dos:hidden"));
173        checkEqual(attrs.isSystem(), Files.getAttribute(file, "dos:system"));
174        checkEqual(attrs.isArchive(), Files.getAttribute(file, "dos:archive"));
175
176        // setAttribute
177        boolean value;
178
179        value = attrs.isReadOnly();
180        Files.setAttribute(file, "dos:readonly", !value);
181        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isReadOnly(), !value);
182        Files.setAttribute(file, "dos:readonly", value);
183        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isReadOnly(), value);
184
185        value = attrs.isHidden();
186        Files.setAttribute(file, "dos:hidden", !value);
187        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isHidden(), !value);
188        Files.setAttribute(file, "dos:hidden", value);
189        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isHidden(), value);
190
191        value = attrs.isSystem();
192        Files.setAttribute(file, "dos:system", !value);
193        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isSystem(), !value);
194        Files.setAttribute(file, "dos:system", value);
195        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isSystem(), value);
196
197        value = attrs.isArchive();
198        Files.setAttribute(file, "dos:archive", !value);
199        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isArchive(), !value);
200        Files.setAttribute(file, "dos:archive", value);
201        checkEqual(Files.readAttributes(file, DosFileAttributes.class).isArchive(), value);
202
203        // readAttributes
204        Map<String,Object> map;
205        map = Files.readAttributes(file, "dos:*");
206        assertTrue(map.size() >= 13);
207        checkEqual(attrs.isReadOnly(), map.get("readonly")); // check one
208
209        map = Files.readAttributes(file, "dos:size,hidden,ShouldNotExist");
210        assertTrue(map.size() == 2);
211        checkEqual(attrs.size(), map.get("size"));
212        checkEqual(attrs.isHidden(), map.get("hidden"));
213    }
214
215    static void miscTests(Path file) throws IOException {
216        // NPE tests
217        try {
218            Files.getAttribute(file, null);
219            throw new RuntimeException("NullPointerException expected");
220        } catch (NullPointerException npe) { }
221        try {
222            Files.getAttribute(file, "isRegularFile", (LinkOption[])null);
223            throw new RuntimeException("NullPointerException expected");
224        } catch (NullPointerException npe) { }
225        try {
226            Files.setAttribute(file, null, 0L);
227            throw new RuntimeException("NullPointerException expected");
228        } catch (NullPointerException npe) { }
229    }
230
231    static void doTests(Path dir) throws IOException {
232        Path file = dir.resolve("foo");
233        Files.createFile(file);
234        FileStore store = Files.getFileStore(file);
235        try {
236            checkBasicAttributes(file,
237                Files.readAttributes(file, BasicFileAttributes.class));
238
239            if (store.supportsFileAttributeView("posix"))
240                checkPosixAttributes(file,
241                    Files.readAttributes(file, PosixFileAttributes.class));
242
243            if (store.supportsFileAttributeView("unix"))
244                checkUnixAttributes(file);
245
246            if (store.supportsFileAttributeView("dos"))
247                checkDosAttributes(file,
248                    Files.readAttributes(file, DosFileAttributes.class));
249
250            miscTests(file);
251        } finally {
252            Files.delete(file);
253        }
254    }
255
256
257    public static void main(String[] args) throws IOException {
258        Path dir = TestUtil.createTemporaryDirectory();
259        try {
260            doTests(dir);
261        } finally {
262            TestUtil.removeAll(dir);
263        }
264    }
265}
266