lucene/core/src/test/org/apache/lucene/store/TestSimpleFSLockFactory.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.lucene.store;


import java.io.IOException;
import java.nio.file.Path;

import org.apache.lucene.util.IOUtils;

/** Simple tests for SimpleFSLockFactory */
public class TestSimpleFSLockFactory extends BaseLockFactoryTestCase {

  @Override
  protected Directory getDirectory(Path path) throws IOException {
    return newFSDirectory(path, SimpleFSLockFactory.INSTANCE);
  }
  
  /** delete the lockfile and test ensureValid fails */
  public void testDeleteLockFile() throws IOException {
    Directory dir = getDirectory(createTempDir());
    try {
      Lock lock = dir.obtainLock("test.lock");
      lock.ensureValid();
    
      try {
        dir.deleteFile("test.lock");
      } catch (Exception e) {
        // we can't delete a file for some reason, just clean up and assume the test.
        IOUtils.closeWhileHandlingException(lock);
        assumeNoException("test requires the ability to delete a locked file", e);
      }
    
      expectThrows(IOException.class, () -> {
        lock.ensureValid();
      });
      IOUtils.closeWhileHandlingException(lock);
    } finally {
      // Do this in finally clause in case the assumeNoException is false:
      dir.close();
    }
  }
}