1 /*
   2  * Copyright (c) 2008, 2015, 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 8073445
  26  * @summary Unit test for java.nio.file.FileSystem
  27  * @library ..
  28  */
  29 
  30 import java.nio.file.*;
  31 import java.nio.file.attribute.*;
  32 import java.io.IOException;
  33 
  34 /**
  35  * Simple santity checks for java.nio.file.FileSystem
  36  */
  37 public class Basic {
  38 
  39     static void check(boolean okay, String msg) {
  40         if (!okay)
  41             throw new RuntimeException(msg);
  42     }
  43 
  44     static void checkSupported(FileSystem fs, String... views) {
  45         for (String view: views) {
  46             check(fs.supportedFileAttributeViews().contains(view),
  47                 "support for '" + view + "' expected");
  48         }
  49     }
  50 
  51     public static void main(String[] args) throws IOException {
  52         FileSystem fs = FileSystems.getDefault();
  53 
  54         // close should throw UOE
  55         try {
  56             fs.close();
  57             throw new RuntimeException("UnsupportedOperationException expected");
  58         } catch (UnsupportedOperationException e) { }
  59         check(fs.isOpen(), "should be open");
  60 
  61         check(!fs.isReadOnly(), "should provide read-write access");
  62 
  63         check(fs.provider().getScheme().equals("file"),
  64             "should use 'file' scheme");
  65 
  66         // santity check method - need to re-visit this in future as I/O errors
  67         // are possible
  68         for (FileStore store: fs.getFileStores()) {
  69             System.out.println(store);
  70         }
  71 
  72         // sanity check supportedFileAttributeViews
  73         checkSupported(fs, "basic");
  74         String os = System.getProperty("os.name");
  75         if (os.equals("SunOS"))
  76             checkSupported(fs, "posix", "unix", "owner", "acl", "user");
  77         if (os.equals("Linux"))
  78             checkSupported(fs, "posix", "unix", "owner", "dos", "user");
  79         if (os.contains("OS X"))
  80             checkSupported(fs, "posix", "unix", "owner");
  81         if (os.equals("Windows"))
  82             checkSupported(fs, "owner", "dos", "acl", "user");
  83 
  84         // should NOT throw UOE
  85         PathMatcher pm = FileSystems.getDefault().getPathMatcher("Regex:java");
  86         // next three lines to avoid unused variable complaints about 'pm' 
  87         // and any possibility of things eventually being optimized out
  88         if (pm.matches(Paths.get("/foo", "bar"))) {
  89             System.out.println("foobar!");
  90         }
  91     }
  92 }