/*
    * Copyright (C) 2011, Robin Stocker <robin@nibor.org>
    * 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.lib;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.junit.TestRepository;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.eclipse.jgit.revwalk.RevWalk;
  import org.junit.Test;
  
  public class BranchTrackingStatusTest extends RepositoryTestCase {
  	private TestRepository<Repository> util;
  
  	protected RevWalk rw;
  
  	@Override
  	public void setUp() throws Exception {
  		super.setUp();
  		util = new TestRepository<Repository>(db);
  		StoredConfig config = util.getRepository().getConfig();
  		config.setString(ConfigConstants.CONFIG_BRANCH_SECTION, "master",
  				ConfigConstants.CONFIG_KEY_REMOTE, "origin");
  		config.setString(ConfigConstants.CONFIG_BRANCH_SECTION, "master",
  				ConfigConstants.CONFIG_KEY_MERGE, "refs/heads/master");
  		config.setString(ConfigConstants.CONFIG_REMOTE_SECTION, "origin",
  				"fetch", "+refs/heads/*:refs/remotes/origin/*");
  	}
  
  	@Test
  	public void shouldWorkInNormalCase() throws Exception {
  		RevCommit remoteTracking = util.branch("refs/remotes/origin/master")
  				.commit().create();
  		util.branch("master").commit().parent(remoteTracking).create();
  		util.branch("master").commit().create();
  
  		BranchTrackingStatus status = BranchTrackingStatus.of(
  				util.getRepository(), "master");
  		assertEquals(2, status.getAheadCount());
  		assertEquals(0, status.getBehindCount());
  		assertEquals("refs/remotes/origin/master",
  				status.getRemoteTrackingBranch());
  	}
  
  	@Test
  	public void shouldWorkWithoutMergeBase() throws Exception {
  		util.branch("refs/remotes/origin/master").commit().create();
  		util.branch("master").commit().create();
  
  		BranchTrackingStatus status = BranchTrackingStatus.of(util.getRepository(), "master");
  		assertEquals(1, status.getAheadCount());
  		assertEquals(1, status.getBehindCount());
  	}
  
  	@Test
  	public void shouldReturnNullWhenBranchDoesntExist() throws Exception {
 		BranchTrackingStatus status = BranchTrackingStatus.of(
 				util.getRepository(), "doesntexist");
 
 		assertNull(status);
 	}
 }