import org.junit.Assert;

/**
 * Various utilities for testing {@link HashFunction}s.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
final class HashTestUtils {
  private HashTestUtils() {}

  /** Converts a string, which should contain only ascii-representable characters, to a byte[]. */
  static byte[] ascii(String string) {
    byte[] bytes = new byte[string.length()];

import org.junit.Assert;

/**
 * Various utilities for testing {@link HashFunction}s.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
final class HashTestUtils {
  private HashTestUtils() {}

  /** Converts a string, which should contain only ascii-representable characters, to a byte[]. */
  static byte[] ascii(String string) {
    byte[] bytes = new byte[string.length()];

    assertPutString(
        new char[] {
          HashTestUtils.randomLowSurrogate(new Random()),
          HashTestUtils.randomHighSurrogate(new Random())
        });
  }

  public void testPutStringWithHighLowSurrogate() {
    assertPutString(
        new char[] {
          HashTestUtils.randomHighSurrogate(new Random()),
          HashTestUtils.randomLowSurrogate(new Random())
        });
  }

    assertHash32(0x5BD90FD9, ADLER_32, "The quick brown fox jumps over the lazy cog");
  }

  private static void assertChecksum(ImmutableSupplier<Checksum> supplier, String input) {
    byte[] bytes = HashTestUtils.ascii(input);

    Checksum checksum = supplier.get();
    checksum.update(bytes, 0, bytes.length);
    long value = checksum.getValue();

    String toString = "name";

          .build();

  public void testHashing() {
    for (String stringToTest : INPUTS) {
      for (String algorithmToTest : ALGORITHMS.keySet()) {
        assertMessageDigestHashing(HashTestUtils.ascii(stringToTest), algorithmToTest);
      }
    }
  }

  public void testPutAfterHash() {
    Hasher sha1 = Hashing.sha1().newHasher();

    assertEquals(

  public void testBasic() {
    for (double fpr = 0.0000001; fpr < 0.1; fpr *= 10) {
      for (int expectedInsertions = 1; expectedInsertions <= 10000; expectedInsertions *= 10) {
        checkSanity(BloomFilter.create(HashTestUtils.BAD_FUNNEL, expectedInsertions, fpr));
      }
    }
  }

  public void testPreconditions() {
    assertThrows(
        IllegalArgumentException.class,

import static java.nio.charset.StandardCharsets.UTF_16LE;
import static org.junit.Assert.assertThrows;

import com.google.common.collect.Iterables;
import com.google.common.hash.HashTestUtils.RandomHasherAction;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;

        String algorithm = cell.getRowKey();
        SecretKey key = cell.getColumnKey();
        HashFunction hashFunc = cell.getValue();
        assertMacHashing(HashTestUtils.ascii(stringToTest), algorithm, key, hashFunc);
      }
    }
  }

  @AndroidIncompatible // sun.security
  public void testNoProviders() {
    ProviderList providers = Providers.getProviderList();

        String algorithm = cell.getRowKey();
        SecretKey key = cell.getColumnKey();
        HashFunction hashFunc = cell.getValue();
        assertMacHashing(HashTestUtils.ascii(stringToTest), algorithm, key, hashFunc);
      }
    }
  }

  @AndroidIncompatible // sun.security
  public void testNoProviders() {
    ProviderList providers = Providers.getProviderList();