/*******************************************************************************
    * Copyright (c) 2014 Andreas Hermann and others
    *
    * This program and the accompanying materials are made available under the
    * terms of the Eclipse Distribution License v. 1.0 which is available at
    * https://www.eclipse.org/org/documents/edl-v10.php.
    *
    * SPDX-License-Identifier: BSD-3-Clause
    *******************************************************************************/
  package org.eclipse.jgit.internal.storage.file;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static org.junit.Assert.assertEquals;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.lib.PersonIdent;
  import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase;
  import org.junit.Test;
  
  public class ReflogWriterTest extends SampleDataRepositoryTestCase {
  
  	private static String oneLine = "da85355dfc525c9f6f3927b876f379f46ccf826e 3e7549db262d1e836d9bf0af7e22355468f1717c"
  			+ " John Doe <john@doe.com> 1243028200 +0200\tstash: Add message with line feeds\n";
  
  	@Test
  	public void shouldFilterLineFeedFromMessage() throws Exception {
  		ReflogWriter writer =
  				new ReflogWriter((RefDirectory) db.getRefDatabase());
  		PersonIdent ident = new PersonIdent("John Doe", "john@doe.com",
  				1243028200000L, 120);
  		ObjectId oldId = ObjectId
  				.fromString("da85355dfc525c9f6f3927b876f379f46ccf826e");
  		ObjectId newId = ObjectId
  				.fromString("3e7549db262d1e836d9bf0af7e22355468f1717c");
  
  		writer.log("refs/heads/master", oldId, newId, ident,
  				"stash: Add\nmessage\r\nwith line feeds");
  
  		byte[] buffer = new byte[oneLine.getBytes(UTF_8).length];
  		readReflog(buffer);
  		assertEquals(oneLine, new String(buffer, UTF_8));
  	}
  
  	private void readReflog(byte[] buffer)
  			throws FileNotFoundException, IOException {
  		File logfile = new File(db.getDirectory(), "logs/refs/heads/master");
  		if (!logfile.getParentFile().mkdirs()
  				&& !logfile.getParentFile().isDirectory()) {
  			throw new IOException(
  					"oops, cannot create the directory for the test reflog file"
  							+ logfile);
  		}
  		try (FileInputStream fileInputStream = new FileInputStream(logfile)) {
  			fileInputStream.read(buffer);
  		}
  	}
  }