/*
    * Copyright (C) 2011, Stefan Lay <stefan.lay@.com> 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.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());
  			}
  		}
  	}
  
  }