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.attribute.FileStoreAttributeView
27 * @library ../..
28 */
29
30 import java.nio.file.*;
31 import java.nio.file.attribute.*;
32 import java.io.File;
33 import java.io.IOException;
34 import java.util.*;
35
36 /**
37 * Simple unit test for FileStoreAttributeView that checks that the disk space
38 * attribtues are "close" to the equivalent values reported by java.io.File.
39 */
40
41 public class Basic {
42
43 static final long K = 1024L;
44 static final long G = 1024L * 1024L * 1024L;
45
46 /**
47 * Print out the disk space information for the given file system
48 */
49 static void printFileStore(FileStore fs) throws IOException {
50 FileStoreSpaceAttributeView view =
51 fs.getFileStoreAttributeView(FileStoreSpaceAttributeView.class);
52 FileStoreSpaceAttributes attrs = view.readAttributes();
53
54 long total = attrs.totalSpace() / K;
55 long used = (attrs.totalSpace() - attrs.unallocatedSpace()) / K;
56 long avail = attrs.usableSpace() / K;
57
58 String s = fs.toString();
59 if (s.length() > 20) {
60 System.out.println(s);
61 s = "";
62 }
63 System.out.format("%-20s %12d %12d %12d\n", s, total, used, avail);
64 }
65
66 /**
67 * Check that two values are within 1GB of each other
68 */
69 static void checkWithin1GB(long value1, long value2) {
70 long diff = Math.abs(value1 - value2);
71 if (diff > G)
72 throw new RuntimeException("values differ by more than 1GB");
73 }
74
75 /**
76 * Check disk space on the file system of the given file
77 */
78 static void checkSpace(Path file) throws IOException {
79 System.out.println(" -- check space -- ");
80 System.out.println(file);
81
82 FileStore fs = file.getFileStore();
83 System.out.format("Filesystem: %s\n", fs);
84
85 // get values reported by java.io.File
86 File f = new File(file.toString());
87 long total = f.getTotalSpace();
88 long free = f.getFreeSpace();
89 long usable = f.getUsableSpace();
90 System.out.println("java.io.File");
91 System.out.format(" Total: %d\n", total);
92 System.out.format(" Free: %d\n", free);
93 System.out.format(" Usable: %d\n", usable);
94
95 // get values reported by the FileStoreSpaceAttributeView
96 FileStoreSpaceAttributes attrs = fs
97 .getFileStoreAttributeView(FileStoreSpaceAttributeView.class)
98 .readAttributes();
99 System.out.println("java.nio.file.FileStoreSpaceAttributeView:");
100 System.out.format(" Total: %d\n", attrs.totalSpace());
101 System.out.format(" Free: %d\n", attrs.unallocatedSpace());
102 System.out.format(" Usable: %d\n", attrs.usableSpace());
103
104 // check values are "close"
105 checkWithin1GB(total, attrs.totalSpace());
106 checkWithin1GB(free, attrs.unallocatedSpace());
107 checkWithin1GB(usable, attrs.usableSpace());
108
109 // get values by name
110 checkWithin1GB(total, (Long)fs.getAttribute("space:totalSpace"));
111 checkWithin1GB(free, (Long)fs.getAttribute("space:unallocatedSpace"));
112 checkWithin1GB(usable, (Long)fs.getAttribute("space:usableSpace"));
113 }
114
115 public static void main(String[] args) throws IOException {
116 // print out the disk space information for all file systems
117 FileSystem fs = FileSystems.getDefault();
118 for (FileStore store: fs.getFileStores()) {
119 printFileStore(store);
120 }
121
122 Path dir = TestUtil.createTemporaryDirectory();
123 try {
124 // check space using directory
125 checkSpace(dir);
126
127 // check space using file
128 Path file = dir.resolve("foo").createFile();
129 checkSpace(file);
130
131 } finally {
132 TestUtil.removeAll(dir);
133 }
134 }
135 }