/*
    * Copyright (C) 2011, Chris Aniszczyk <caniszczyk@gmail.com>
    * 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,
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   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.eclipse.jgit.api;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  
  import java.util.Collection;
  
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.lib.Constants;
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.lib.ReflogEntry;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.junit.Before;
  import org.junit.Test;
  
  public class ReflogCommandTest extends RepositoryTestCase {
  
  	private Git git;
  
  	private RevCommit commit1, commit2;
  
  	private static final String FILE = "test.txt";
  
  	@Override
  	@Before
  	public void setUp() throws Exception {
  		super.setUp();
  
  		git = new Git(db);
  		// commit something
  		writeTrashFile(FILE, "Hello world");
  		git.add().addFilepattern(FILE).call();
  		commit1 = git.commit().setMessage("Initial commit").call();
  		git.checkout().setCreateBranch(true).setName("b1").call();
  		git.rm().addFilepattern(FILE).call();
  		commit2 = git.commit().setMessage("Removed file").call();
  		git.notesAdd().setObjectId(commit1).setMessage("data").call();
  	}
  
  	/**
  	 * Test getting the HEAD reflog
  	 *
  	 * @throws Exception
  	 */
  	@Test
  	public void testHeadReflog() throws Exception {
  		Collection<ReflogEntry> reflog = git.reflog().call();
  		assertNotNull(reflog);
  		assertEquals(3, reflog.size());
  		ReflogEntry[] reflogs = reflog.toArray(new ReflogEntry[reflog.size()]);
  		assertEquals(reflogs[2].getComment(),
  				"commit (initial): Initial commit");
  		assertEquals(reflogs[2].getNewId(), commit1.getId());
  		assertEquals(reflogs[2].getOldId(), ObjectId.zeroId());
  		assertEquals(reflogs[1].getComment(),
  				"checkout: moving from master to b1");
  		assertEquals(reflogs[1].getNewId(), commit1.getId());
 		assertEquals(reflogs[1].getOldId(), commit1.getId());
 		assertEquals(reflogs[0].getComment(), "commit: Removed file");
 		assertEquals(reflogs[0].getNewId(), commit2.getId());
 		assertEquals(reflogs[0].getOldId(), commit1.getId());
 	}
 
 	/**
 	 * Test getting the reflog for an explicit branch
 	 *
 	 * @throws Exception
 	 */
 	@Test
 	public void testBranchReflog() throws Exception {
 		Collection<ReflogEntry> reflog = git.reflog()
 				.setRef(Constants.R_HEADS + "b1").call();
 		assertNotNull(reflog);
 		assertEquals(2, reflog.size());
 		ReflogEntry[] reflogs = reflog.toArray(new ReflogEntry[reflog.size()]);
 		assertEquals(reflogs[0].getComment(), "commit: Removed file");
 		assertEquals(reflogs[0].getNewId(), commit2.getId());
 		assertEquals(reflogs[0].getOldId(), commit1.getId());
 		assertEquals(reflogs[1].getComment(),
 				"branch: Created from commit Initial commit");
 		assertEquals(reflogs[1].getNewId(), commit1.getId());
 		assertEquals(reflogs[1].getOldId(), ObjectId.zeroId());
 	}
 
 	/**
 	 * Test getting the reflog for an amend commit
 	 *
 	 * @throws Exception
 	 */
 	@Test
 	public void testAmendReflog() throws Exception {
 		RevCommit commit2a = git.commit().setAmend(true)
 				.setMessage("Deleted file").call();
 		Collection<ReflogEntry> reflog = git.reflog().call();
 		assertNotNull(reflog);
 		assertEquals(4, reflog.size());
 		ReflogEntry[] reflogs = reflog.toArray(new ReflogEntry[reflog.size()]);
 		assertEquals(reflogs[3].getComment(),
 				"commit (initial): Initial commit");
 		assertEquals(reflogs[3].getNewId(), commit1.getId());
 		assertEquals(reflogs[3].getOldId(), ObjectId.zeroId());
 		assertEquals(reflogs[2].getComment(),
 				"checkout: moving from master to b1");
 		assertEquals(reflogs[2].getNewId(), commit1.getId());
 		assertEquals(reflogs[2].getOldId(), commit1.getId());
 		assertEquals(reflogs[1].getComment(), "commit: Removed file");
 		assertEquals(reflogs[1].getNewId(), commit2.getId());
 		assertEquals(reflogs[1].getOldId(), commit1.getId());
 		assertEquals(reflogs[0].getComment(), "commit (amend): Deleted file");
 		assertEquals(reflogs[0].getNewId(), commit2a.getId());
 		assertEquals(reflogs[0].getOldId(), commit2.getId());
 	}
 }