import com.google.common.testing.NullPointerTester;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * {@link TestCase} for {@link InternetDomainName}.
 *
 * @author Craig Berry
 */
@GwtCompatible
@NullUnmarked
public final class InternetDomainNameTest extends TestCase {
  private static final InternetDomainName UNICODE_EXAMPLE =

    assertTrue(len4.matches('d'));
    for (char c = 'e'; c < 'z'; c++) {
      assertFalse(len4.matches(c));
    }

    Random rand = new Random(1234);
    for (int testCase = 0; testCase < 100; testCase++) {
      char[] chars = randomChars(rand, rand.nextInt(63) + 1);
      CharMatcher m = SmallCharMatcher.from(bitSet(chars), new String(chars));
      checkExactMatches(m, chars);
    }
  }

import java.util.Arrays;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit tests for {@link HashCode}.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
@NullUnmarked
public class HashCodeTest extends TestCase {
  // note: asInt(), asLong() are in little endian

import java.util.Comparator;
import java.util.List;
import java.util.Random;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for UnsignedLongs
 *
 * @author Brian Milch
 * @author Louis Wasserman
 */
@GwtCompatible
@NullUnmarked
public class UnsignedLongsTest extends TestCase {
  private static final long LEAST = 0L;
  private static final long GREATEST = 0xffffffffffffffffL;

import java.io.StringReader;
import java.io.StringWriter;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@code BaseEncoding}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@NullUnmarked
public class BaseEncodingTest extends TestCase {

  public void testSeparatorsExplicitly() {

import java.lang.reflect.Modifier;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.Random;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Hashing}.
 *
 * <p>TODO(b/33919189): Migrate repeated testing methods to {@link HashTestUtils} and tweak unit

import java.util.stream.LongStream;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullUnmarked
public class ImmutableLongArrayTest extends TestCase {
  // Test all creation paths very lazily: by assuming asList() works

  public void testOf0() {

import java.util.Collections;
import java.util.List;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;

/**
 * Tests for {@link Multisets}.
 *
 * @author Mike Bostock
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible
@NullMarked
public class MultisetsTest extends TestCase {

  /* See MultisetsImmutableEntryTest for immutableEntry() tests. */

import java.util.concurrent.Future;
import java.util.concurrent.TimeoutException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/** Unit tests for {@link Futures#getChecked(Future, Class)}. */
@NullUnmarked
public class FuturesGetCheckedTest extends TestCase {
  // Boring untimed-get tests:

  public void testGetCheckedUntimed_success() throws TwoArgConstructorException {

import java.util.concurrent.TimeoutException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link AbstractExecutionThreadService}.
 *
 * @author Jesse Wilson
 */
@NullUnmarked
public class AbstractExecutionThreadServiceTest extends TestCase {

  private final TearDownStack tearDownStack = new TearDownStack(true);