280 lines
10 KiB
Java
280 lines
10 KiB
Java
/*
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* Copyright (c) 2008, 2011, 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.UserDefinedFileAttributeView
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* @library ../..
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*/
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import java.nio.ByteBuffer;
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import java.nio.charset.Charset;
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import java.nio.file.*;
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import static java.nio.file.LinkOption.*;
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import java.nio.file.attribute.*;
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import java.util.Arrays;
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import java.util.Map;
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import java.util.Random;
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import java.io.IOException;
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public class Basic {
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private static Random rand = new Random();
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private static final String ATTR_NAME = "mime_type";
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private static final String ATTR_VALUE = "text/plain";
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private static final String ATTR_VALUE2 = "text/html";
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static interface Task {
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void run() throws Exception;
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}
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static void tryCatch(Class<? extends Throwable> ex, Task task) {
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boolean caught = false;
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try {
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task.run();
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} catch (Throwable x) {
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if (ex.isAssignableFrom(x.getClass())) {
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caught = true;
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} else {
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throw new RuntimeException(x);
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}
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}
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if (!caught)
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throw new RuntimeException(ex.getName() + " expected");
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}
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static void expectNullPointerException(Task task) {
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tryCatch(NullPointerException.class, task);
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}
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static boolean hasAttribute(UserDefinedFileAttributeView view, String attr)
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throws IOException
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{
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for (String name: view.list()) {
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if (name.equals(ATTR_NAME))
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return true;
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}
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return false;
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}
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static void test(Path file, LinkOption... options) throws IOException {
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final UserDefinedFileAttributeView view =
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Files.getFileAttributeView(file, UserDefinedFileAttributeView.class, options);
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ByteBuffer buf = rand.nextBoolean() ?
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ByteBuffer.allocate(100) : ByteBuffer.allocateDirect(100);
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// Test: write
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buf.put(ATTR_VALUE.getBytes()).flip();
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int size = buf.remaining();
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int nwrote = view.write(ATTR_NAME, buf);
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if (nwrote != size)
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throw new RuntimeException("Unexpected number of bytes written");
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// Test: size
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if (view.size(ATTR_NAME) != size)
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throw new RuntimeException("Unexpected size");
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// Test: read
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buf.clear();
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int nread = view.read(ATTR_NAME, buf);
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if (nread != size)
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throw new RuntimeException("Unexpected number of bytes read");
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buf.flip();
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String value = Charset.defaultCharset().decode(buf).toString();
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if (!value.equals(ATTR_VALUE))
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throw new RuntimeException("Unexpected attribute value");
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// Test: read with insufficient space
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tryCatch(IOException.class, new Task() {
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public void run() throws IOException {
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view.read(ATTR_NAME, ByteBuffer.allocateDirect(1));
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}});
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// Test: replace value
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buf.clear();
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buf.put(ATTR_VALUE2.getBytes()).flip();
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size = buf.remaining();
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view.write(ATTR_NAME, buf);
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if (view.size(ATTR_NAME) != size)
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throw new RuntimeException("Unexpected size");
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// Test: list
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if (!hasAttribute(view, ATTR_NAME))
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throw new RuntimeException("Attribute name not in list");
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// Test: delete
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view.delete(ATTR_NAME);
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if (hasAttribute(view, ATTR_NAME))
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throw new RuntimeException("Attribute name in list");
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// Test: dynamic access
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String name = "user:" + ATTR_NAME;
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byte[] valueAsBytes = ATTR_VALUE.getBytes();
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Files.setAttribute(file, name, valueAsBytes);
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byte[] actualAsBytes = (byte[])Files.getAttribute(file, name);
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if (!Arrays.equals(valueAsBytes, actualAsBytes))
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throw new RuntimeException("Unexpected attribute value");
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Map<String,?> map = Files.readAttributes(file, name);
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if (!Arrays.equals(valueAsBytes, (byte[])map.get(ATTR_NAME)))
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throw new RuntimeException("Unexpected attribute value");
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map = Files.readAttributes(file, "user:*");
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if (!Arrays.equals(valueAsBytes, (byte[])map.get(ATTR_NAME)))
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throw new RuntimeException("Unexpected attribute value");
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}
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static void miscTests(final Path file) throws IOException {
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final UserDefinedFileAttributeView view =
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Files.getFileAttributeView(file, UserDefinedFileAttributeView.class);
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view.write(ATTR_NAME, ByteBuffer.wrap(ATTR_VALUE.getBytes()));
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// NullPointerException
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final ByteBuffer buf = ByteBuffer.allocate(100);
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.read(null, buf);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.read(ATTR_NAME, null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.write(null, buf);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.write(ATTR_NAME, null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.size(null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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view.delete(null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.getAttribute(file, null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.getAttribute(file, "user:" + ATTR_NAME, (LinkOption[])null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.setAttribute(file, "user:" + ATTR_NAME, null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.setAttribute(file, null, new byte[0]);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.setAttribute(file, "user: " + ATTR_NAME, new byte[0], (LinkOption[])null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.readAttributes(file, (String)null);
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}});
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expectNullPointerException(new Task() {
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public void run() throws IOException {
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Files.readAttributes(file, "*", (LinkOption[])null);
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}});
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// Read-only buffer
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tryCatch(IllegalArgumentException.class, new Task() {
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public void run() throws IOException {
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ByteBuffer buf = ByteBuffer.wrap(ATTR_VALUE.getBytes()).asReadOnlyBuffer();
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view.write(ATTR_NAME, buf);
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buf.flip();
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view.read(ATTR_NAME, buf);
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}});
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// Zero bytes remaining
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tryCatch(IOException.class, new Task() {
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public void run() throws IOException {
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ByteBuffer buf = buf = ByteBuffer.allocateDirect(100);
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buf.position(buf.capacity());
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view.read(ATTR_NAME, buf);
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}});
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}
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public static void main(String[] args) throws IOException {
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// create temporary directory to run tests
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Path dir = TestUtil.createTemporaryDirectory();
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try {
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if (!Files.getFileStore(dir).supportsFileAttributeView("user")) {
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System.out.println("UserDefinedFileAttributeView not supported - skip test");
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return;
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}
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// test access to user defined attributes of regular file
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Path file = dir.resolve("foo.html");
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Files.createFile(file);
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try {
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test(file);
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} finally {
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Files.delete(file);
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}
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// test access to user defined attributes of directory
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Path subdir = dir.resolve("foo");
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Files.createDirectory(subdir);
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try {
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test(subdir);
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} finally {
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Files.delete(subdir);
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}
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// test access to user defined attributes of sym link
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if (TestUtil.supportsLinks(dir)) {
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Path target = dir.resolve("doesnotexist");
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Path link = dir.resolve("link");
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Files.createSymbolicLink(link, target);
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try {
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test(link, NOFOLLOW_LINKS);
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} catch (IOException x) {
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// access to attributes of sym link may not be supported
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} finally {
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Files.delete(link);
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}
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}
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// misc. tests
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try {
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file = dir.resolve("foo.txt");
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Files.createFile(file);
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miscTests(dir);
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} finally {
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Files.delete(file);
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}
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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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