### Question:
GlusterFileSystemProvider extends FileSystemProvider { @Override public <A extends BasicFileAttributes> A readAttributes(Path path, Class<A> type, LinkOption... linkOptions) throws IOException { if (type.equals(DosFileAttributes.class)) { throw new UnsupportedOperationException(type + " attribute type is not supported, only PosixFileAttributes & its superinterfaces"); } stat stat = new stat(); boolean followSymlinks = true; for (LinkOption lo : linkOptions) { if (lo.equals(LinkOption.NOFOLLOW_LINKS)) { followSymlinks = false; break; } } int ret; String pathString = ((GlusterPath) path).getString(); if (followSymlinks) { ret = GLFS.glfs_stat(((GlusterFileSystem) path.getFileSystem()).getVolptr(), pathString, stat); } else { ret = GLFS.glfs_lstat(((GlusterFileSystem) path.getFileSystem()).getVolptr(), pathString, stat); } if (-1 == ret) { throw new NoSuchFileException(""); } return (A) GlusterFileAttributes.fromStat(stat); }  @Override String getScheme(); @Override FileSystem newFileSystem(URI uri, Map<String, ?> stringMap); @Override FileSystem getFileSystem(URI uri); @Override Path getPath(URI uri); @Override SeekableByteChannel newByteChannel(Path path, Set<? extends OpenOption> openOptions, FileAttribute<?>... fileAttributes); @Override FileChannel newFileChannel(Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs); @Override DirectoryStream<Path> newDirectoryStream(Path path, DirectoryStream.Filter<? super Path> filter); @Override void createDirectory(Path path, FileAttribute<?>... fileAttributes); @Override void delete(Path path); @Override void copy(Path path, Path path2, CopyOption... copyOptions); @Override void move(Path path, Path path2, CopyOption... copyOptions); @Override boolean isSameFile(Path path, Path path2); @Override boolean isHidden(Path path); @Override FileStore getFileStore(Path path); @Override void checkAccess(Path path, AccessMode... accessModes); @Override V getFileAttributeView(Path path, Class<V> vClass, LinkOption... linkOptions); @Override A readAttributes(Path path, Class<A> type, LinkOption... linkOptions); @Override Map<String, Object> readAttributes(Path path, String s, LinkOption... linkOptions); @Override void setAttribute(Path path, String s, Object o, LinkOption... linkOptions); @Override Path readSymbolicLink(Path link); @Override void createSymbolicLink(Path link, Path target, FileAttribute<?>... attrs); static final String GLUSTER; static final int GLUSTERD_PORT; static final String TCP; }### Answer:
@Test(expected = UnsupportedOperationException.class) public void testReadAttributes_whenDosAttributes() throws IOException { provider.readAttributes(mockPath, DosFileAttributes.class); }