final CountDownLatch jvmNotification = new CountDownLatch(1)

                    MemoryManager manager = services.get(MemoryManager.class)
                    manager.addListener(new JvmMemoryStatusListener() {
                        void onJvmMemoryStatus(JvmMemoryStatus memoryStatus) {
                            logger.lifecycle "JVM MemoryStatus notification: $memoryStatus"

        }
    }

    private void registerListener(Object listener) {
        listeners.add(listener);
        listenerManager.addListener(listener);
        if (listener instanceof BuildOperationListener) {
            buildOperationListenerManager.addListener((BuildOperationListener) listener);
        }
    }

    }

    def "does nothing when function does nothing"() {
        def listener = Mock(BuildTreeLifecycleListener)
        def action = Mock(Function)

        given:
        listenerManager.addListener(listener)

        when:
        state.run(action)

        then:
        1 * action.apply(_)
        0 * actionExecutor._
        0 * listener._
    }

    delegate.addListener(fire, directExecutor());
    return result;
  }

  /*
   * Memory visibility of these fields. There are two cases to consider.
   *
   * 1. visibility of the writes to these fields to Fire.run:
   *
   * The initial write to delegateRef is made definitely visible via the semantics of

    public DefaultFileSystemDefaultExcludesProvider(ListenerManager listenerManager) {
        broadcast = listenerManager.createAnonymousBroadcaster(FileSystemDefaultExcludesListener.class);

        listenerManager.addListener(new RootBuildLifecycleListener() {
            @Override
            public void afterStart() {
                DirectoryScanner.resetDefaultExcludes();

                inputs.property('p', project)
                doLast { t -> t.project }
            }
        """
        buildFile << """
            tasks.register("broken") {
                gradle.addListener(new BuildAdapter())
                inputs.property('p', project).optional(true)
                doLast { }
            }
            tasks.register("ok") {
                doLast { }
            }
        """

import junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.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 junit.framework.TestCase;
import org.checkerframework.checker.nullness.qual.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;

    delegate.addListener(fire, directExecutor());
    return result;
  }

  /*
   * Memory visibility of these fields. There are two cases to consider.
   *
   * 1. visibility of the writes to these fields to Fire.run:
   *
   * The initial write to delegateRef is made definitely visible via the semantics of

    }

    def "does nothing when function does nothing"() {
        def listener = Mock(BuildSessionLifecycleListener)
        def action = Mock(Function)

        given:
        listenerManager.addListener(listener)

        when:
        state.run(action)

        then:
        1 * action.apply(_)
        0 * actionExecutor._
        0 * listener._
    }