/* Copyright 2015 Google Inc. All Rights Reserved.

   Distributed under MIT license.
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/

package org.brotli.dec;

import static org.junit.Assert.assertEquals;

import java.nio.ByteBuffer;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link Dictionary}.
 */
@RunWith(JUnit4.class)
public class DictionaryTest {

  private static long crc64(ByteBuffer data) {
    long crc = -1;
    for (int i = 0; i < data.capacity(); ++i) {
      long c = (crc ^ (long) (data.get(i) & 0xFF)) & 0xFF;
      for (int k = 0; k < 8; k++) {
        c = (c >>> 1) ^ (-(c & 1L) & -3932672073523589310L);
      }
      crc = c ^ (crc >>> 8);
    }
    return ~crc;
  }

  @Test
  public void testGetData() {
    assertEquals(37084801881332636L, crc64(Dictionary.getData()));
  }
}