Shawn Pearce
14 years ago
committed by
Code Review
2 changed files with 161 additions and 5 deletions
@ -0,0 +1,152 @@
|
||||
/* |
||||
* 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.storage.file; |
||||
|
||||
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.Before; |
||||
import org.junit.Test; |
||||
import static org.junit.Assert.*; |
||||
|
||||
public class FileSnapshotTest { |
||||
|
||||
private List<File> files = new ArrayList<File>(); |
||||
|
||||
private final File trash = new File(new File("target"), "trash"); |
||||
|
||||
@Before |
||||
public void tearDown() throws Exception { |
||||
FileUtils.delete(trash, FileUtils.RECURSIVE | FileUtils.SKIP_MISSING); |
||||
} |
||||
|
||||
private 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 void append(File f, byte b) throws IOException { |
||||
FileOutputStream os = new FileOutputStream(f, true); |
||||
try { |
||||
os.write(b); |
||||
} finally { |
||||
os.close(); |
||||
} |
||||
} |
||||
|
||||
} |
Loading…
Reference in new issue