/**
 * 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.hadoop.io.compress;

import static org.junit.Assert.assertEquals;

import org.apache.hadoop.conf.Configuration;
import org.junit.Before;
import org.junit.Test;

public class TestCodecPool {
  private final String LEASE_COUNT_ERR =
      "Incorrect number of leased (de)compressors";
  DefaultCodec codec;

  @Before
  public void setup() {
    this.codec = new DefaultCodec();
    this.codec.setConf(new Configuration());
  }

  @Test(timeout = 1000)
  public void testCompressorPoolCounts() {
    // Get two compressors and return them
    Compressor comp1 = CodecPool.getCompressor(codec);
    Compressor comp2 = CodecPool.getCompressor(codec);
    assertEquals(LEASE_COUNT_ERR, 2,
        CodecPool.getLeasedCompressorsCount(codec));

    CodecPool.returnCompressor(comp2);
    assertEquals(LEASE_COUNT_ERR, 1,
        CodecPool.getLeasedCompressorsCount(codec));

    CodecPool.returnCompressor(comp1);
    assertEquals(LEASE_COUNT_ERR, 0,
        CodecPool.getLeasedCompressorsCount(codec));
  }

  @Test(timeout = 1000)
  public void testDecompressorPoolCounts() {
    // Get two decompressors and return them
    Decompressor decomp1 = CodecPool.getDecompressor(codec);
    Decompressor decomp2 = CodecPool.getDecompressor(codec);
    assertEquals(LEASE_COUNT_ERR, 2,
        CodecPool.getLeasedDecompressorsCount(codec));

    CodecPool.returnDecompressor(decomp2);
    assertEquals(LEASE_COUNT_ERR, 1,
        CodecPool.getLeasedDecompressorsCount(codec));

    CodecPool.returnDecompressor(decomp1);
    assertEquals(LEASE_COUNT_ERR, 0,
        CodecPool.getLeasedDecompressorsCount(codec));
  }
}