/*
    * Copyright (C) 2011, Stefan Lay <stefan.lay@.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,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  package org.eclipse.jgit.diff;
  
  import static org.junit.Assert.assertEquals;
  
  import java.io.File;
  
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.dircache.DirCacheIterator;
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.treewalk.FileTreeIterator;
  import org.eclipse.jgit.treewalk.filter.PathFilter;
  import org.junit.Test;
  
  public class PatchIdDiffFormatterTest extends RepositoryTestCase {
  
  	@Test
  	public void testDiff() throws Exception {
  		write(new File(db.getDirectory().getParent(), "test.txt"), "test");
  		File folder = new File(db.getDirectory().getParent(), "folder");
  		folder.mkdir();
  		write(new File(folder, "folder.txt"), "folder");
  		try (Git git = new Git(db);
  				PatchIdDiffFormatter df = new PatchIdDiffFormatter()) {
  			git.add().addFilepattern(".").call();
  			git.commit().setMessage("Initial commit").call();
  			write(new File(folder, "folder.txt"), "folder change");
  
  			df.setRepository(db);
  			df.setPathFilter(PathFilter.create("folder"));
  			DirCacheIterator oldTree = new DirCacheIterator(db.readDirCache());
  			FileTreeIterator newTree = new FileTreeIterator(db);
  			df.format(oldTree, newTree);
  			df.flush();
  
  			assertEquals("1ff64e0f9333e9b81967c3e8d7a81362b14d5441", df
  					.getCalulatedPatchId().name());
  		}
  	}
  
  	@Test
  	public void testSameDiff() throws Exception {
  		write(new File(db.getDirectory().getParent(), "test.txt"), "test");
  		File folder = new File(db.getDirectory().getParent(), "folder");
  		folder.mkdir();
  		write(new File(folder, "folder.txt"), "\n\n\n\nfolder");
  		try (Git git = new Git(db)) {
  			git.add().addFilepattern(".").call();
  			git.commit().setMessage("Initial commit").call();
  			write(new File(folder, "folder.txt"), "\n\n\n\nfolder change");
  
  			try (PatchIdDiffFormatter df = new PatchIdDiffFormatter()) {
  				df.setRepository(db);
  				df.setPathFilter(PathFilter.create("folder"));
  				DirCacheIterator oldTree = new DirCacheIterator(db.readDirCache());
  				FileTreeIterator newTree = new FileTreeIterator(db);
  				df.format(oldTree, newTree);
  				df.flush();
 
 				assertEquals("08fca5ac531383eb1da8bf6b6f7cf44411281407", df
 						.getCalulatedPatchId().name());
 			}
 
 			write(new File(folder, "folder.txt"), "a\n\n\n\nfolder");
 			git.add().addFilepattern(".").call();
 			git.commit().setMessage("Initial commit").call();
 			write(new File(folder, "folder.txt"), "a\n\n\n\nfolder change");
 
 			try (PatchIdDiffFormatter df = new PatchIdDiffFormatter()) {
 				df.setRepository(db);
 				df.setPathFilter(PathFilter.create("folder"));
 				DirCacheIterator oldTree = new DirCacheIterator(db.readDirCache());
 				FileTreeIterator newTree = new FileTreeIterator(db);
 				df.format(oldTree, newTree);
 				df.flush();
 
 				assertEquals("08fca5ac531383eb1da8bf6b6f7cf44411281407", df
 						.getCalulatedPatchId().name());
 			}
 		}
 	}
 
 }