/*
* Syncany, www.syncany.org
* Copyright (C) 2011-2014 Philipp C. Heckel <philipp.heckel@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.syncany.tests.chunk;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Enumeration;
import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import org.syncany.chunk.Chunk;
import org.syncany.chunk.Chunker;
import org.syncany.chunk.TttdChunker;
import org.syncany.tests.util.TestFileUtil;
import org.syncany.util.FileUtil;
public class TTTDChunkerTest {
private File tempDir;
@Before
public void setUp() throws Exception {
tempDir = TestFileUtil.createTempDirectoryInSystemTemp();
}
@After
public void tearDown() throws Exception {
TestFileUtil.deleteDirectory(tempDir);
}
@Test
public void testStringSerialization() {
final int CHUNK_SIZE = 512*1024;
Chunker chunker = new TttdChunker(CHUNK_SIZE);
assertEquals("Other toString() result expected.", "TTTD-"+CHUNK_SIZE+"-"+TttdChunker.DEFAULT_DIGEST_ALG+"-"+TttdChunker.DEFAULT_FINGERPRINT_ALG, chunker.toString());
}
@Test
public void testCreateChunksFrom5MBFileAndTestChunkSize() throws Exception {
// Test Constants
final int TOTAL_FILE_SIZE = 5*1024*1024;
final int AVG_CHUNK_SIZE = 512*1024;
// Setup
File inputRandom5MBFile = TestFileUtil.createRandomFileInDirectory(tempDir, TOTAL_FILE_SIZE);
File outputCopyOfRandom5MBFile = TestFileUtil.getRandomFilenameInDirectory(tempDir);
FileOutputStream outputCopyOfRandom5MBFileOutputStream = new FileOutputStream(outputCopyOfRandom5MBFile);
Chunker chunker = new TttdChunker(AVG_CHUNK_SIZE);
// Create chunks
Enumeration<Chunk> chunkEnumeration = chunker.createChunks(inputRandom5MBFile);
Chunk lastChunk = null;
while (chunkEnumeration.hasMoreElements()) {
lastChunk = chunkEnumeration.nextElement();
// Checksum
assertNotNull("Chunk checksum should not be null.", lastChunk.getChecksum());
outputCopyOfRandom5MBFileOutputStream.write(lastChunk.getContent(), 0, lastChunk.getSize());
}
outputCopyOfRandom5MBFileOutputStream.close();
// Number of chunks
// TODO [low] How to test the number of chunks?
// Checksums
byte[] inputFileChecksum = FileUtil.createChecksum(inputRandom5MBFile, TttdChunker.DEFAULT_DIGEST_ALG);
byte[] outputFileChecksum = FileUtil.createChecksum(outputCopyOfRandom5MBFile, TttdChunker.DEFAULT_DIGEST_ALG);
assertArrayEquals("Checksums of input and output file do not match.", inputFileChecksum, outputFileChecksum);
assertArrayEquals("Last chunk's getFileChecksum() should be the file checksum.", inputFileChecksum, lastChunk.getFileChecksum());
}
@Test
@Ignore
public void testNumberAndSizeOfCreatedChunks() {
fail("Not yet implemented");
}
@Test
public void testNextChunkEvenIfThereAreNone() throws IOException {
// Test Constants
final int TOTAL_FILE_SIZE = 5*1024;
final int CHUNK_SIZE = 512*1024;
// Setup
File inputFile = TestFileUtil.createRandomFileInDirectory(tempDir, TOTAL_FILE_SIZE);
Chunker chunker = new TttdChunker(CHUNK_SIZE);
// Create chunks
Enumeration<Chunk> chunkEnumeration = chunker.createChunks(inputFile);
while (chunkEnumeration.hasMoreElements()) {
chunkEnumeration.nextElement();
}
// This should lead to an IOException
assertNull("No chunk expected, but data received.", chunkEnumeration.nextElement());
assertFalse("hasElements() should return 'false' if no chunk available.", chunkEnumeration.hasMoreElements());
}
}