/*
    * Copyright (C) 2011, Garmin International
    * Copyright (C) 2011, Jesse Greenwald <jesse.greenwald@gmail.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.revwalk;
  
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.IOException;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.eclipse.jgit.errors.IncorrectObjectTypeException;
  import org.eclipse.jgit.errors.MissingObjectException;
  import org.eclipse.jgit.errors.StopWalkException;
  import org.eclipse.jgit.revwalk.filter.RevFilter;
  import org.junit.Test;
  
  public class RevWalkResetTest extends RevWalkTestCase {
  
  	@Test
  	public void testRevFilterReceivesParsedCommits() throws Exception {
  		final RevCommit a = commit();
  		final RevCommit b = commit(a);
  		final RevCommit c = commit(b);
  
  		final AtomicBoolean filterRan = new AtomicBoolean();
  		RevFilter testFilter = new RevFilter() {
  
  			@Override
  			public boolean include(RevWalk walker, RevCommit cmit)
  					throws StopWalkException, MissingObjectException,
  					IncorrectObjectTypeException, IOException {
  				assertNotNull("commit is parsed", cmit.getRawBuffer());
  				filterRan.set(true);
  				return true;
  			}
  
  			@Override
  			public RevFilter clone() {
  				return this;
  			}
  
  			@Override
  			public boolean requiresCommitBody() {
  				return true;
  			}
  		};
  
  		// Do an initial run through the walk
  		filterRan.set(false);
  		rw.setRevFilter(testFilter);
  		markStart(c);
  		rw.markUninteresting(b);
  		for (RevCommit cmit = rw.next(); cmit != null; cmit = rw.next()) {
  			// Don't dispose the body here, because we want to test the effect
  			// of marking 'b' as uninteresting.
  		}
  		assertTrue("filter ran", filterRan.get());
  
  		// Run through the walk again, this time disposing of all commits.
  		filterRan.set(false);
  		rw.reset();
  		markStart(c);
  		for (RevCommit cmit = rw.next(); cmit != null; cmit = rw.next()) {
  			cmit.disposeBody();
  		}
  		assertTrue("filter ran", filterRan.get());
  
  		// Do the third run through the reused walk. Test that the explicitly
  		// disposed commits are parsed on this walk.
  		filterRan.set(false);
  		rw.reset();
  		markStart(c);
  		for (RevCommit cmit = rw.next(); cmit != null; cmit = rw.next()) {
  			// spin through the walk.
  		}
  		assertTrue("filter ran", filterRan.get());
  
  	}
  }