* callbacks. Its subclasses must manage threads manually; consider {@link
 * AbstractExecutionThreadService} if you need only a single execution thread.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 1.0
 */
@GwtIncompatible
@J2ktIncompatible
public abstract class AbstractService implements Service {
  private static final ListenerCallQueue.Event<Listener> STARTING_EVENT =

 * {@link PairedStatsAccumulator#snapshot} method which returns {@link PairedStats} instances, see
 * {@link PairedStatsTest}.
 *
 * @author Pete Gillin
 */
@NullUnmarked
@J2ktIncompatible
@GwtIncompatible
public class PairedStatsAccumulatorTest extends TestCase {

  private PairedStatsAccumulator emptyAccumulator;

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

/**
 * Tests for {@link Quantiles}.
 *
 * @author Pete Gillin
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class QuantilesTest extends TestCase {

  /*
   * Since Quantiles provides a fluent-style API, each test covers a chain of methods resulting in

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

/**
 * Tests for {@link Quantiles}.
 *
 * @author Pete Gillin
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class QuantilesTest extends TestCase {

  /*
   * Since Quantiles provides a fluent-style API, each test covers a chain of methods resulting in

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

/**
 * Unit test for {@link AbstractService}.
 *
 * @author Jesse Wilson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class AbstractServiceTest extends TestCase {

  private static final long LONG_TIMEOUT_MILLIS = 10000;
  private Thread executionThread;

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

/**
 * Unit test for {@link AbstractService}.
 *
 * @author Jesse Wilson
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class AbstractServiceTest extends TestCase {

  private static final long LONG_TIMEOUT_MILLIS = 10000;
  private Thread executionThread;

import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@link Stats}. This tests instances created by both {@link Stats#of} and {@link
 * StatsAccumulator#snapshot}.
 *
 * @author Pete Gillin
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
public class StatsTest extends TestCase {

  public void testCount() {
    assertThat(EMPTY_STATS_VARARGS.count()).isEqualTo(0);

import junit.framework.TestSuite;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link ImmutableSortedMap}.
 *
 * @author Kevin Bourrillion
 * @author Jesse Wilson
 * @author Jared Levy
 */
@GwtCompatible
@SuppressWarnings("AlwaysThrows")
@NullMarked
public class ImmutableSortedMapTest extends TestCase {
  // TODO: Avoid duplicating code in ImmutableMapTest

 *
 * <p>See the Guava User Guide article on <a
 * href="https://github.com/google/guava/wiki/StringsExplained#splitter">{@code Splitter}</a>.
 *
 * @author Julien Silland
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 * @since 1.0
 */
@GwtCompatible
public final class Splitter {
  private final CharMatcher trimmer;
  private final boolean omitEmptyStrings;

/**
 * A mutable object which accumulates double values and tracks some basic statistics over all the
 * values added so far. The values may be added singly or in groups. This class is not thread safe.
 *
 * @author Pete Gillin
 * @author Kevin Bourrillion
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class StatsAccumulator {
  /** Creates a new accumulator. */
  public StatsAccumulator() {}