final Collection<BuildStep> predecessors = new HashSet<>();
    final Collection<BuildStep> successors = new HashSet<>();
    final AtomicInteger status = new AtomicInteger();
    final AtomicBoolean skip = new AtomicBoolean();
    volatile Exception exception;

    public BuildStep(String name, MavenProject project, Lifecycle.Phase phase) {
        this.name = Objects.requireNonNull(name, "name cannot be null");

  class Interruptenator extends Thread {
    final AtomicBoolean shutdown;

    Interruptenator(Thread interruptee) {
      this(interruptee, new AtomicBoolean(false));
    }

    @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
    Interruptenator(Thread interruptee, AtomicBoolean shutdown) {
      super(
          new Runnable() {
            @Override

   * of the {@code Map} method calls and check that {@code setUpRan} is true.
   */
  private static class CheckSetUpHashMapGenerator extends WrappedHashMapGenerator {
    private final AtomicBoolean setUpRan;

    CheckSetUpHashMapGenerator(AtomicBoolean setUpRan) {
      this.setUpRan = setUpRan;
    }

    @Override
    Map<String, String> wrap(HashMap<String, String> map) {
      @SuppressWarnings("unchecked")

import java.net.ConnectException
import java.util.concurrent.atomic.AtomicBoolean
import org.junit.Assert.fail
import org.junit.Test
import org.junit.runner.Description
import org.junit.runners.model.Statement

class MockWebServerRuleTest {
  @Test fun statementStartsAndStops() {
    val rule = MockWebServerRule()
    val called = AtomicBoolean()
    val statement: Statement =
      rule.apply(

    assertThat(executionException).hasCauseThat().isEqualTo(e);
  }

  @J2ktIncompatible
  @GwtIncompatible // blocking wait
  public void testCancel_interrupted() throws Exception {
    AtomicBoolean interruptedExceptionThrown = new AtomicBoolean();
    CountDownLatch enterLatch = new CountDownLatch(1);
    CountDownLatch exitLatch = new CountDownLatch(1);
    TrustedListenableFutureTask<Integer> task =

    AtomicReference<AbstractFuture<String>> setFutureFuture = Atomics.newReference();
    AtomicBoolean setFutureSetSuccess = new AtomicBoolean();
    AtomicBoolean setFutureCompletionSuccess = new AtomicBoolean();
    AtomicBoolean cancellationSuccess = new AtomicBoolean();
    Runnable cancelRunnable =
        new Runnable() {
          @Override
          public void run() {

        resourceManager.configure(1000, 100, true, true);
    }

    /**
     * Test resource for tracking
     */
    static class TestResource implements AutoCloseable {
        private final AtomicBoolean closed = new AtomicBoolean(false);
        private final String name;

        TestResource(String name) {
            this.name = name;
        }

        @Override
        public void close() {

public class MockWitnessService implements AutoCloseable {
    private static final Logger log = LoggerFactory.getLogger(MockWitnessService.class);

    private ServerSocket serverSocket;
    private final AtomicBoolean running = new AtomicBoolean(false);
    private final AtomicInteger registrationCounter = new AtomicInteger(0);
    private final ConcurrentHashMap<String, MockRegistration> registrations = new ConcurrentHashMap<>();

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Consumer;

import org.eclipse.aether.transfer.AbstractTransferListener;
import org.eclipse.aether.transfer.TransferCancelledException;
import org.eclipse.aether.transfer.TransferEvent;

    // This allows us to only start up a thread waiting on the delegate future when the first
    // listener is added.
    private final AtomicBoolean hasListeners = new AtomicBoolean(false);

    // The delegate future.
    private final Future<V> delegate;

    ListenableFutureAdapter(Future<V> delegate) {
      this(delegate, defaultAdapterExecutor);
    }