jgit/org.eclipse.jgit.java7.test/src/org/eclipse/jgit/util/FSJava7Test.java

/*
 * Copyright (C) 2012-2013, Robin Rosenberg <robin.rosenberg@dewire.com>
 * and other copyright owners as documented in the project's IP log.
 *
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
 * accompanies this distribution, is reproduced below, and is
 * available at http://www.eclipse.org/org/documents/edl-v10.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials provided
 *   with the distribution.
 *
 * - Neither the name of the Eclipse Foundation, Inc. nor the
 *   names of its contributors may be used to endorse or promote
 *   products derived from this software without specific prior
 *   written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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package org.eclipse.jgit.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.io.File;
import java.io.IOException;

import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.util.FS;
import org.eclipse.jgit.util.FileUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class FSJava7Test {

	private final File trash = new File(new File("target"), "trash");

	@Before
	public void setUp() throws Exception {
		FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.RETRY | FileUtils.SKIP_MISSING);
		assertTrue(trash.mkdirs());
	}

	@After
	public void tearDown() throws Exception {
		FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.RETRY);
	}

	/**
	 * The old File methods traverse symbolic links and look at the targets.
	 * With symbolic links we usually want to modify/look at the link. For some
	 * reason the executable attribute seems to always look at the target, but
	 * for the other attributes like lastModified, hidden and exists we must
	 * differ between the link and the target.
	 *
	 * @throws IOException
	 * @throws InterruptedException
	 */
	@Test
	public void testSymlinkAttributes() throws IOException, InterruptedException {
		FS fs = FS.DETECTED;
		File link = new File(trash, "x");
		File target = new File(trash, "y");
		fs.createSymLink(link, "y");
		assertTrue(fs.exists(link));
		String targetName = fs.readSymLink(link);
		assertEquals("y", targetName);
		assertTrue(fs.lastModified(link) > 0);
		assertTrue(fs.exists(link));
		assertFalse(fs.canExecute(link));
		assertEquals(1, fs.length(link));
		assertFalse(fs.exists(target));
		assertFalse(fs.isFile(target));
		assertFalse(fs.isDirectory(target));
		assertFalse(fs.canExecute(target));

		RepositoryTestCase.fsTick(link);
		// Now create the link target
		FileUtils.createNewFile(target);
		assertTrue(fs.exists(link));
		assertTrue(fs.lastModified(link) > 0);
		assertTrue(fs.lastModified(target) > fs.lastModified(link));
		assertFalse(fs.canExecute(link));
		fs.setExecute(target, true);
		assertFalse(fs.canExecute(link));
		assertTrue(fs.canExecute(target));
	}

}