import java.util.Set;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@code ForwardingSet}.
 *
 * @author Robert Konigsberg
 * @author Louis Wasserman
 */
@NullUnmarked
public class ForwardingSetTest extends TestCase {
  static class StandardImplForwardingSet<T> extends ForwardingSet<T> {

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

/**
 * Tests for {@link StandardSystemProperty}.
 *
 * @author Kurt Alfred Kluever
 */
@GwtIncompatible
@NullUnmarked
public class StandardSystemPropertyTest extends TestCase {

  public void testGetKeyMatchesString() {

import java.util.Map.Entry;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit test for {@link ImmutableTypeToInstanceMap}.
 *
 * @author Ben Yu
 */
@NullUnmarked
public class ImmutableTypeToInstanceMapTest extends TestCase {

  @AndroidIncompatible // problem with suite builders on Android

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

/**
 * Tests for {@link AbstractIdleService}.
 *
 * @author Chris Nokleberg
 * @author Ben Yu
 */
@NullUnmarked
public class AbstractIdleServiceTest extends TestCase {
  public void testStart() {
    TestService service = new TestService();

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

/**
 * Tests for ThreadFactoryBuilder.
 *
 * @author Kurt Alfred Kluever
 * @author Martin Buchholz
 */
@NullUnmarked
public class ThreadFactoryBuilderTest extends TestCase {
  private final Runnable monitoredRunnable =
      new Runnable() {
        @Override

import junit.framework.TestCase;
import org.jspecify.annotations.Nullable;

/**
 * Abstract test case parent for anything implementing {@link ListenableFuture}. Tests the two get
 * methods and the addListener method.
 *
 * @author Sven Mawson
 * @since 10.0
 */
@GwtIncompatible
public abstract class AbstractListenableFutureTest extends TestCase {

  protected CountDownLatch latch;

import java.util.Map.Entry;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for {@code ImmutableRangeMap}.
 *
 * @author Louis Wasserman
 */
@GwtIncompatible // NavigableMap
@NullUnmarked
public class ImmutableRangeMapTest extends TestCase {
  private static final ImmutableList<Range<Integer>> RANGES;
  private static final int MIN_BOUND = 0;

import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.reflect.Method;
import java.util.Set;
import junit.framework.TestCase;

/**
 * @author George van den Driessche
 */
public class FeatureUtilTest extends TestCase {
  enum ExampleFeature implements Feature<Object> {
    FOO,
    IMPLIES_FOO,
    IMPLIES_IMPLIES_FOO,
    BAR,
    IMPLIES_BAR,

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

/**
 * Test for {@link WrappingExecutorService}
 *
 * @author Chris Nokleberg
 */
@NullUnmarked
public class WrappingExecutorServiceTest extends TestCase {
  private static final String RESULT_VALUE = "ran";

  // Uninteresting delegations

import java.util.NoSuchElementException;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Unit test for {@link PeekingIterator}.
 *
 * @author Mick Killianey
 */
@SuppressWarnings("serial") // No serialization is used in this test
@GwtCompatible
@NullMarked
public class PeekingIteratorTest extends TestCase {

  /**