/*
    * Copyright (C) 2012, IBM Corporation and others. 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.lib;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.junit.Test;
  
  public class SquashCommitMsgTest extends RepositoryTestCase {
  	private static final String squashMsg = "squashed commit";
  
  	@Test
  	public void testReadWriteMergeMsg() throws IOException {
  		assertEquals(db.readSquashCommitMsg(), null);
  		assertFalse(new File(db.getDirectory(), Constants.SQUASH_MSG).exists());
  		db.writeSquashCommitMsg(squashMsg);
  		assertEquals(squashMsg, db.readSquashCommitMsg());
  		assertEquals(read(new File(db.getDirectory(), Constants.SQUASH_MSG)),
  				squashMsg);
  		db.writeSquashCommitMsg(null);
  		assertEquals(db.readSquashCommitMsg(), null);
  		assertFalse(new File(db.getDirectory(), Constants.SQUASH_MSG).exists());
  		try (FileOutputStream fos = new FileOutputStream(
  				new File(db.getDirectory(), Constants.SQUASH_MSG))) {
  			fos.write(squashMsg.getBytes(UTF_8));
  		}
  		assertEquals(db.readSquashCommitMsg(), squashMsg);
  	}
  }