thirdparty/rocksdb/java/src/test/java/org/rocksdb/RocksEnvTest.java

// Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

package org.rocksdb;

import org.junit.ClassRule;
import org.junit.Test;

import static org.assertj.core.api.Assertions.assertThat;

public class RocksEnvTest {

  @ClassRule
  public static final RocksMemoryResource rocksMemoryResource =
      new RocksMemoryResource();

  @Test
  public void rocksEnv() {
    try (final Env rocksEnv = RocksEnv.getDefault()) {
      rocksEnv.setBackgroundThreads(5);
      // default rocksenv will always return zero for flush pool
      // no matter what was set via setBackgroundThreads
      assertThat(rocksEnv.getThreadPoolQueueLen(RocksEnv.FLUSH_POOL)).
          isEqualTo(0);
      rocksEnv.setBackgroundThreads(5, RocksEnv.FLUSH_POOL);
      // default rocksenv will always return zero for flush pool
      // no matter what was set via setBackgroundThreads
      assertThat(rocksEnv.getThreadPoolQueueLen(RocksEnv.FLUSH_POOL)).
          isEqualTo(0);
      rocksEnv.setBackgroundThreads(5, RocksEnv.COMPACTION_POOL);
      // default rocksenv will always return zero for compaction pool
      // no matter what was set via setBackgroundThreads
      assertThat(rocksEnv.getThreadPoolQueueLen(RocksEnv.COMPACTION_POOL)).
          isEqualTo(0);
    }
  }
}