/*
    * Copyright (C) 2012, GitHub 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.internal.storage.file;
  
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import org.eclipse.jgit.api.Git;
  import org.eclipse.jgit.api.errors.JGitInternalException;
  import org.eclipse.jgit.errors.LockFailedException;
  import org.eclipse.jgit.junit.RepositoryTestCase;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.junit.Test;
  
  /**
   * Unit tests of {@link LockFile}
   */
  public class LockFileTest extends RepositoryTestCase {
  
  	@Test
  	public void lockFailedExceptionRecovery() throws Exception {
  		try (Git git = new Git(db)) {
  			writeTrashFile("file.txt", "content");
  			git.add().addFilepattern("file.txt").call();
  			RevCommit commit1 = git.commit().setMessage("create file").call();
  
  			assertNotNull(commit1);
  			writeTrashFile("file.txt", "content2");
  			git.add().addFilepattern("file.txt").call();
  			assertNotNull(git.commit().setMessage("edit file").call());
  
  			LockFile lf = new LockFile(db.getIndexFile());
  			assertTrue(lf.lock());
  			try {
  				git.checkout().setName(commit1.name()).call();
  				fail("JGitInternalException not thrown");
  			} catch (JGitInternalException e) {
  				assertTrue(e.getCause() instanceof LockFailedException);
  				lf.unlock();
  				git.checkout().setName(commit1.name()).call();
  			}
  		}
  	}
  }