/*
* Eoulsan development code
*
* This code may be freely distributed and modified under the
* terms of the GNU Lesser General Public License version 2.1 or
* later and CeCILL-C. This should be distributed with the code.
* If you do not have a copy, see:
*
* http://www.gnu.org/licenses/lgpl-2.1.txt
* http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.txt
*
* Copyright for this code is held jointly by the Genomic platform
* of the Institut de Biologie de l'École normale supérieure and
* the individual authors. These should be listed in @author doc
* comments.
*
* For more information on the Eoulsan project and its aims,
* or to join the Eoulsan Google group, visit the home page
* at:
*
* http://outils.genomique.biologie.ens.fr/eoulsan
*
*/
package fr.ens.biologie.genomique.eoulsan.io;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import com.google.common.base.Strings;
import fr.ens.biologie.genomique.eoulsan.io.FileConcatInputStream;
import fr.ens.biologie.genomique.eoulsan.util.FileUtils;
public class FileConcatInputStreamTest {
@Test
public void test() throws IOException {
final List<File> files = new ArrayList<>();
files.add(writeFile(1000, 255));
files.add(writeFile(1500, 123));
files.add(writeFile(777, 222));
files.add(writeFile(888, 255));
final int total = 1000 + 1500 + 777 + 888;
final InputStream is = new FileConcatInputStream(files);
final BufferedReader br = FileUtils.createBufferedReader(is);
String line = null;
int count = 0;
while ((line = br.readLine()) != null) {
final String[] fields = line.split("\t");
assertNotNull(fields);
final int r = Integer.parseInt(fields[0]);
if (r == 0) {
assertEquals(1, fields.length);
} else {
assertEquals(2, fields.length);
assertEquals(r, fields[1].length());
}
count++;
}
assertEquals(total, count);
br.close();
for (File f : files) {
f.delete();
}
}
private File writeFile(final int lines, final int mod) throws IOException {
File f = File.createTempFile("junit-", ".txt");
Writer writer = new FileWriter(f);
for (int i = 0; i < lines; i++) {
final int r = i % mod;
writer.write(r + "\t" + Strings.repeat("*", r) + "\n");
}
writer.close();
return f;
}
}