when:
        start {
            monitor.monitorInput {
                instant.started
                it.addCallback {
                    instant.cancelled
                }
                thread.blockUntil.cancelled
            }
            instant.finished
        }

        thread.blockUntil.started
        writeEnd.close()
        thread.blockUntil.finished

        then:

package main

import "C"

import (
	"os"
	"runtime"
	"sync/atomic"
)

var started int32

// Start a goroutine that loops forever.
func init() {
	runtime.GOMAXPROCS(1)
	go func() {
		for {
			atomic.StoreInt32(&started, 1)
		}
	}()
}

//export GoFunction8
func GoFunction8() {
	for atomic.LoadInt32(&started) == 0 {
		runtime.Gosched()
	}
	os.Exit(0)
}

func main() {

 * <h3>State flows</h3>
 *
 * <ul>
 *   <li>INIT -&gt; STARTED -&gt; [SUCCEEDED|FAILED|ABORTED|DETACHED]</li>
 *   <li>INIT -&gt; FAILED</li>
 *   <li>INIT -&gt; STARTED -&gt; DETACHED -&gt; ABORTED</li>
 * </ul>
 *
 * State is controlled on all control methods:
 * <ul>
 * <li>{@link #start()} allowed when state is INIT</li>
 * <li>{@link #abort()} allowed when state is STARTED or DETACHED</li>
 * </ul>
 */

	return "cannotMultipleRunBackend"
}

func TestUnionRun(t *testing.T) {
	backends := []Backend{
		&cannotMultipleRunBackend{started: make(chan struct{})},
		&cannotMultipleRunBackend{started: make(chan struct{})},
		&cannotMultipleRunBackend{started: make(chan struct{})},
	}

	b := Union(backends...)

	if err := b.Run(make(chan struct{})); err != nil {
		t.Errorf("union backend run: %v", err)
	}

                return;
            }

            active.put(id, "");

            Started notification = new Started(startEvent.getStartTime(), id, parentId, buildOperation.getDetails());

            try {
                notificationListener.started(notification);
            } catch (Throwable e) {

        BuildOperationDescriptor generatedDescriptor;

        when:
        adapter.started(testDescriptorInternal, testStartEvent)

        then:
        1 * buildOperationIdFactory.nextId() >> 1
        1 * clock.currentTime >> 0
        1 * listener.started(_, _) >> {
            generatedDescriptor = it[0]
            assert generatedDescriptor.details.testDescriptor == testDescriptorInternal

        this
    }

    @PackageScope
    GradleExecResult execute(String... command) {
        if (!started) {
            container.withCommand("tail", "-f", "/dev/null")
            startContainer()
        }
        return container.execute(command)
    }

    void startContainer() {
        started = true
        container.start()
        monitor = new Thread(new Runnable() {
            @Override

            processor.started(suiteDescriptor, suiteStartEvent)
            processor.started(testDescriptor, testStartEvent)
            processor.completed("test", finishEvent)
            processor.completed("suite", finishEvent)

            processor.started(suiteDescriptor, suiteStartEvent)
            processor.completed("suite", finishEvent)
        }

			{typ: add1, running: 3, waiting: 3, started: false},
			{typ: done, running: 3, waiting: 2, started: true},
			{typ: add1, running: 3, waiting: 3, started: false},
			{typ: done, running: 3, waiting: 2, started: true},
			{typ: done, running: 3, waiting: 1, started: true},
			{typ: done, running: 3, waiting: 0, started: true},
			{typ: done, running: 2, waiting: 0, started: false},
			{typ: done, running: 1, waiting: 0, started: false},

    def "allows events to be added as enum values"() {
        when:
        logging.events STARTED, SKIPPED

        then:
        logging.events == [STARTED, SKIPPED] as Set
    }

    def "allows events to be added as string values"() {
        when:
        logging.events "started", "skipped"

        then:
        logging.events == [STARTED, SKIPPED] as Set
    }