| /* |
| * Copyright (C) 2010, Robin Rosenberg |
| * 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, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package org.eclipse.jgit.internal.storage.file; |
| |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jgit.util.FileUtils; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class FileSnapshotTest { |
| |
| private List<File> files = new ArrayList<>(); |
| |
| private File trash; |
| |
| @Before |
| public void setUp() throws Exception { |
| trash = File.createTempFile("tmp_", ""); |
| trash.delete(); |
| assertTrue("mkdir " + trash, trash.mkdir()); |
| } |
| |
| @Before |
| @After |
| public void tearDown() throws Exception { |
| FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.SKIP_MISSING); |
| } |
| |
| private static void waitNextSec(File f) { |
| long initialLastModified = f.lastModified(); |
| do { |
| f.setLastModified(System.currentTimeMillis()); |
| } while (f.lastModified() == initialLastModified); |
| } |
| |
| /** |
| * Change data and time stamp. |
| * |
| * @throws Exception |
| */ |
| @Test |
| public void testActuallyIsModifiedTrivial() throws Exception { |
| File f1 = createFile("simple"); |
| waitNextSec(f1); |
| FileSnapshot save = FileSnapshot.save(f1); |
| append(f1, (byte) 'x'); |
| waitNextSec(f1); |
| assertTrue(save.isModified(f1)); |
| } |
| |
| /** |
| * Create a file, but don't wait long enough for the difference between file |
| * system clock and system clock to be significant. Assume the file may have |
| * been modified. It may have been, but the clock alone cannot determine |
| * this |
| * |
| * @throws Exception |
| */ |
| @Test |
| public void testNewFileWithWait() throws Exception { |
| File f1 = createFile("newfile"); |
| waitNextSec(f1); |
| FileSnapshot save = FileSnapshot.save(f1); |
| Thread.sleep(1500); |
| assertTrue(save.isModified(f1)); |
| } |
| |
| /** |
| * Same as {@link #testNewFileWithWait()} but do not wait at all |
| * |
| * @throws Exception |
| */ |
| @Test |
| public void testNewFileNoWait() throws Exception { |
| File f1 = createFile("newfile"); |
| waitNextSec(f1); |
| FileSnapshot save = FileSnapshot.save(f1); |
| Thread.sleep(1500); |
| assertTrue(save.isModified(f1)); |
| } |
| |
| private File createFile(String string) throws IOException { |
| trash.mkdirs(); |
| File f = File.createTempFile(string, "tdat", trash); |
| files.add(f); |
| return f; |
| } |
| |
| private static void append(File f, byte b) throws IOException { |
| FileOutputStream os = new FileOutputStream(f, true); |
| try { |
| os.write(b); |
| } finally { |
| os.close(); |
| } |
| } |
| |
| } |