import static com.google.common.hash.Hashing.GOOD_FAST_HASH_SEED;
import static java.lang.Byte.toUnsignedInt;

import com.google.errorprone.annotations.Immutable;
import java.io.Serializable;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import org.jspecify.annotations.Nullable;

/**
 * See MurmurHash3_x64_128 in <a href="http://smhasher.googlecode.com/svn/trunk/MurmurHash3.cpp">the
 * C++ implementation</a>.
 *

  }

  /** Returns a {@link HashCode} for a sequence of longs, in big-endian order. */
  private static HashCode toHashCode(long... longs) {
    ByteBuffer bb = ByteBuffer.wrap(new byte[longs.length * 8]).order(ByteOrder.LITTLE_ENDIAN);
    for (long x : longs) {
      bb.putLong(x);
    }
    return HashCode.fromBytes(bb.array());
  }

  public void testParanoid() {

import static org.mockito.Mockito.verify;

import com.google.common.testing.EqualsTester;
import com.google.common.testing.SerializableTester;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.mockito.InOrder;

/**
 * Tests for HashExtractors.
 *

import com.google.common.primitives.Longs;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import com.google.errorprone.annotations.Immutable;
import java.io.Serializable;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
import org.jspecify.annotations.Nullable;

/**
 * See MurmurHash3_x86_32 in <a

        position += copied;
        sourceChannel.position(position);
      } while (copied > 0 || position < sourceChannel.size());
      return position - oldPosition;
    }

    ByteBuffer buf = ByteBuffer.wrap(createBuffer());
    long total = 0;
    while (from.read(buf) != -1) {
      Java8Compatibility.flip(buf);
      while (buf.hasRemaining()) {
        total += to.write(buf);
      }

    byte[] md5Hash = Hashing.md5().hashLong(42L).asBytes();
    byte[] murmur3Hash = Hashing.murmur3_32().hashLong(42L).asBytes();
    byte[] combined = new byte[md5Hash.length + murmur3Hash.length];
    ByteBuffer buffer = ByteBuffer.wrap(combined);
    buffer.put(md5Hash);
    buffer.put(murmur3Hash);
    HashCode expected = HashCode.fromBytes(combined);

    assertEquals(

    // Setup
    File file = createTempFile();
    Files.write(bytes, file);

    // Test
    MappedByteBuffer actual = Files.map(file);

    // Verify
    ByteBuffer expected = ByteBuffer.wrap(bytes);
    assertTrue("ByteBuffers should be equal.", expected.equals(actual));
  }

  public void testMap_noSuchFile() throws IOException {
    // Setup
    File file = createTempFile();

    return generateCharBuffer();
  }

  @Generates
  CharBuffer generateCharBuffer() {
    return CharBuffer.allocate(generateInt());
  }

  @Generates
  ByteBuffer generateByteBuffer() {
    return ByteBuffer.allocate(generateInt());
  }

  @Generates
  ShortBuffer generateShortBuffer() {
    return ShortBuffer.allocate(generateInt());
  }

  @Generates

    return generateCharBuffer();
  }

  @Generates
  CharBuffer generateCharBuffer() {
    return CharBuffer.allocate(generateInt());
  }

  @Generates
  ByteBuffer generateByteBuffer() {
    return ByteBuffer.allocate(generateInt());
  }

  @Generates
  ShortBuffer generateShortBuffer() {
    return ShortBuffer.allocate(generateInt());
  }

  @Generates

      return null; // :: must expand to at least one '0'
    }
    if (!hasSkip && delimiterCount + 1 != IPV6_PART_COUNT) {
      return null; // Incorrect number of parts
    }

    ByteBuffer rawBytes = ByteBuffer.allocate(2 * IPV6_PART_COUNT);
    try {
      // Iterate through the parts of the ip string.
      // Invariant: start is always the beginning of a hextet, or the second ':' of the skip
      // sequence "::"