123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163 |
- /*
- * 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.assertFalse;
- 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<File>();
-
- 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, wait long enough and verify that it has not been modified.
- * 3.5 seconds mean any difference between file system timestamp and system
- * clock should be significant.
- *
- * @throws Exception
- */
- @Test
- public void testOldFile() throws Exception {
- File f1 = createFile("oldfile");
- waitNextSec(f1);
- FileSnapshot save = FileSnapshot.save(f1);
- Thread.sleep(3500);
- assertFalse(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();
- }
- }
-
- }
|