import org.gradle.internal.service.scopes.Scope;

/**
 * Listens to the output events like printing to standard output or error
 */
@EventScope(Scope.Build.class)
@DeprecatedInGradleScope
public interface TestOutputListener {

    /**
     * Fired when during test execution anything is printed to standard output or error
     *
     * @param testDescriptor describes the test

                void beforeTest(TestDescriptor testDescriptor) {}
                void afterTest(TestDescriptor testDescriptor, TestResult result) {}
            }
            def testOutputListener = new TestOutputListener() {
                void onOutput(TestDescriptor testDescriptor, TestOutputEvent outputEvent) {}
            }
            gradle.addListener($listener)
            task broken
        """

import org.gradle.api.tasks.testing.TestOutputListener;
import org.gradle.api.tasks.testing.TestResult;

public class TestListenerAdapter implements TestListenerInternal {
    private final TestListener testListener;
    private final TestOutputListener testOutputListener;

    public TestListenerAdapter(TestListener testListener, TestOutputListener testOutputListener) {
        this.testListener = testListener;

            class VerboseOutputListener implements TestOutputListener {

                def logger

                public void onOutput(TestDescriptor descriptor, TestOutputEvent event) {
                    logger.lifecycle(descriptor.toString() + " " + event.destination + " " + event.message);
                }
            }

            class RemoveMeListener implements TestOutputListener {

        testListenerSubscriptions = new BroadcastSubscriptions<TestListener>(TestListener.class);
        testOutputListenerSubscriptions = new BroadcastSubscriptions<TestOutputListener>(TestOutputListener.class);
        binaryResultsDirectory = getProject().getObjects().directoryProperty();

        reports = getProject().getObjects().newInstance(DefaultTestTaskReports.class, this);

import org.gradle.api.tasks.testing.TestDescriptor;
import org.gradle.api.tasks.testing.TestListener;
import org.gradle.api.tasks.testing.TestOutputEvent;
import org.gradle.api.tasks.testing.TestOutputListener;
import org.gradle.api.tasks.testing.TestResult;
import org.gradle.internal.serialize.PlaceholderExceptionSupport;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.HashMap;

import org.gradle.util.internal.TextUtil;

/**
 * Console logger for test events.
 */
public class TestEventLogger extends AbstractTestLogger implements TestListener, TestOutputListener {
    private static final String INDENT = "    ";

    private final TestExceptionFormatter exceptionFormatter;
    private final TestLogging testLogging;

     * <li>{@link org.gradle.api.execution.TaskActionListener}
     * <li>{@link org.gradle.api.tasks.testing.TestListener}
     * <li>{@link org.gradle.api.tasks.testing.TestOutputListener}
     * </ul>
     *
     * @param listener The listener to add. Does nothing if this listener has already been added.
     */
    void addListener(Object listener);

    /**

                @Override void afterTest(TestDescriptor testDescriptor, TestResult result) {}
            }

            class TestOutputAdapter implements TestOutputListener {
                @Override void onOutput(TestDescriptor testDescriptor, TestOutputEvent outputEvent) {}
            }

            gradle.$registrationPoint(new ${listenerType}())
        """)

- Method link:{javadocPath}/org/gradle/api/execution/TaskExecutionGraph.html#afterTask-org.gradle.api.Action-[TaskExecutionGraph.afterTask()]
- Registering TaskExecutionListener, TaskActionListener, TestListener, TestOutputListener via link:{javadocPath}/org/gradle/api/invocation/Gradle.html#addListener-java.lang.Object-[Gradle.addListener()]