/*
    * Copyright (C) 2008, Google Inc. 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.dircache;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Collections;
  
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.lib.FileMode;
  import org.eclipse.jgit.treewalk.TreeWalk;
  import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
  import org.junit.Test;
  
  public class DirCacheBuilderIteratorTest extends RepositoryTestCase {
  	@Test
  	public void testPathFilterGroup_DoesNotSkipTail() throws Exception {
  		final DirCache dc = db.readDirCache();
  
  		final FileMode mode = FileMode.REGULAR_FILE;
  		final String[] paths = { "a-", "a/b", "a/c", "a/d", "a0b" };
  		final DirCacheEntry[] ents = new DirCacheEntry[paths.length];
  		for (int i = 0; i < paths.length; i++) {
  			ents[i] = new DirCacheEntry(paths[i]);
  			ents[i].setFileMode(mode);
  		}
  		{
  			final DirCacheBuilder b = dc.builder();
  			for (DirCacheEntry ent : ents) {
  				b.add(ent);
  			}
  			b.finish();
  		}
  
  		final int expIdx = 2;
  		final DirCacheBuilder b = dc.builder();
  		try (TreeWalk tw = new TreeWalk(db)) {
  			tw.addTree(new DirCacheBuildIterator(b));
  			tw.setRecursive(true);
  			tw.setFilter(PathFilterGroup.createFromStrings(Collections
  					.singleton(paths[expIdx])));
  
  			assertTrue("found " + paths[expIdx], tw.next());
  			final DirCacheIterator c = tw.getTree(0, DirCacheIterator.class);
  			assertNotNull(c);
  			assertEquals(expIdx, c.ptr);
  			assertSame(ents[expIdx], c.getDirCacheEntry());
  			assertEquals(paths[expIdx], tw.getPathString());
  			assertEquals(mode.getBits(), tw.getRawMode(0));
  			assertSame(mode, tw.getFileMode(0));
  			b.add(c.getDirCacheEntry());
  
  			assertFalse("no more entries", tw.next());
  		}
  
  		b.finish();
  		assertEquals(ents.length, dc.getEntryCount());
  		for (int i = 0; i < ents.length; i++)
  			assertSame(ents[i], dc.getEntry(i));
  	}
  }