136 lines
4.8 KiB
Java
136 lines
4.8 KiB
Java
/*
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* Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4313887 6838333
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* @summary Unit test for java.nio.file.attribute.FileStoreAttributeView
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* @library ../..
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*/
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import java.nio.file.*;
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import java.nio.file.attribute.*;
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import java.io.File;
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import java.io.IOException;
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import java.util.*;
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/**
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* Simple unit test for FileStoreAttributeView that checks that the disk space
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* attribtues are "close" to the equivalent values reported by java.io.File.
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*/
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public class Basic {
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static final long K = 1024L;
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static final long G = 1024L * 1024L * 1024L;
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/**
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* Print out the disk space information for the given file system
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*/
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static void printFileStore(FileStore fs) throws IOException {
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FileStoreSpaceAttributeView view =
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fs.getFileStoreAttributeView(FileStoreSpaceAttributeView.class);
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FileStoreSpaceAttributes attrs = view.readAttributes();
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long total = attrs.totalSpace() / K;
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long used = (attrs.totalSpace() - attrs.unallocatedSpace()) / K;
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long avail = attrs.usableSpace() / K;
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String s = fs.toString();
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if (s.length() > 20) {
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System.out.println(s);
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s = "";
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}
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System.out.format("%-20s %12d %12d %12d\n", s, total, used, avail);
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}
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/**
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* Check that two values are within 1GB of each other
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*/
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static void checkWithin1GB(long value1, long value2) {
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long diff = Math.abs(value1 - value2);
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if (diff > G)
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throw new RuntimeException("values differ by more than 1GB");
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}
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/**
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* Check disk space on the file system of the given file
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*/
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static void checkSpace(Path file) throws IOException {
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System.out.println(" -- check space -- ");
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System.out.println(file);
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FileStore fs = file.getFileStore();
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System.out.format("Filesystem: %s\n", fs);
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// get values reported by java.io.File
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File f = new File(file.toString());
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long total = f.getTotalSpace();
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long free = f.getFreeSpace();
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long usable = f.getUsableSpace();
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System.out.println("java.io.File");
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System.out.format(" Total: %d\n", total);
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System.out.format(" Free: %d\n", free);
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System.out.format(" Usable: %d\n", usable);
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// get values reported by the FileStoreSpaceAttributeView
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FileStoreSpaceAttributes attrs = fs
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.getFileStoreAttributeView(FileStoreSpaceAttributeView.class)
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.readAttributes();
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System.out.println("java.nio.file.FileStoreSpaceAttributeView:");
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System.out.format(" Total: %d\n", attrs.totalSpace());
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System.out.format(" Free: %d\n", attrs.unallocatedSpace());
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System.out.format(" Usable: %d\n", attrs.usableSpace());
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// check values are "close"
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checkWithin1GB(total, attrs.totalSpace());
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checkWithin1GB(free, attrs.unallocatedSpace());
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checkWithin1GB(usable, attrs.usableSpace());
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// get values by name
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checkWithin1GB(total, (Long)fs.getAttribute("space:totalSpace"));
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checkWithin1GB(free, (Long)fs.getAttribute("space:unallocatedSpace"));
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checkWithin1GB(usable, (Long)fs.getAttribute("space:usableSpace"));
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}
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public static void main(String[] args) throws IOException {
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// print out the disk space information for all file systems
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FileSystem fs = FileSystems.getDefault();
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for (FileStore store: fs.getFileStores()) {
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printFileStore(store);
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}
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Path dir = TestUtil.createTemporaryDirectory();
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try {
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// check space using directory
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checkSpace(dir);
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// check space using file
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Path file = dir.resolve("foo").createFile();
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checkSpace(file);
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} finally {
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TestUtil.removeAll(dir);
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}
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}
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}
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