buildFile << """
            // prevent assembly and c compile tasks from running in parallel
            // this is because we don't want the c compile tasks to accidentally use
            // the decorated tool provider we set up for testing the parallelism
            tasks.withType(CCompile) { mustRunAfter tasks.withType(Assemble) }
        """

        when:
        succeeds("assemble", "parallelTask")

    def startParameter = Mock(StartParameter)
    def state = Mock(SettingsState)
    def settingsInternal = Mock(SettingsInternal)
    def rootDir = new File("root")

    def "delegates to decorated settings processor"() {
        given:
        settings()

        when:
        buildOperationScriptPlugin.process(gradleInternal, settingsLocation, classLoaderScope, startParameter)

        then:

import java.lang.invoke.MethodHandles;
import java.util.Set;

/**
 * Intercepts method and constructor calls as well as property reads in dynamic Groovy bytecode.
 * <p>
 * The interceptor serves as a factory for decorated Groovy {@link CallSite} instances.
 * These instances replace original CallSites where the calls are to be intercepted.
 * <p>
 * Descendants of this class should be thread-safe, making a stateless implementation is perfect.
 */

     * </ul>
     *
     * <p>An interface, if provided, must not define or inherit any other methods.</p>
     *
     * <p>Objects created using this method are not decorated or extensible.</p>
     *
     * @throws ObjectInstantiationException On failure to create the new instance.
     * @since 4.0
     */

        if (application == null || action instanceof InternalListener) {
            return action;
        }
        Action<T> decorated = application.reapplyLater(action);
        return new BuildOperationEmittingAction<>(application.getId(), registrationPoint, decorated);
    }

    @Override
    public <T> Closure<T> decorate(String registrationPoint, Closure<T> closure) {

    /**
     * The rendered HTML release notes that need decoration.
     */
    @InputFile
    @PathSensitive(PathSensitivity.NONE)
    public abstract RegularFileProperty getHtmlFile();

    /**
     * The decorated HTML file
     */
    @OutputFile
    public abstract RegularFileProperty getDestinationFile();

    /**
     * JQuery used by the added decoration
     */
    @InputFiles

import static org.gradle.internal.Cast.uncheckedCast;

/**
 * Provides a unified, typed, interface to an enhanced DSL object.
 *
 * This is intended to be used with objects that have been decorated by the class generator.
 * <p>
 * Accessing each “aspect” of a DSL object may fail (with an {@link IllegalStateException}) if the DSL

            JarEntry classEntry = jarFile.getJarEntry(classNameToPath(className));
            if (classEntry == null) {
                // This can happen if the class was "injected" into the classloader, e.g. when decorated class is generated by the ObjectFactory.
                // Injected classes reuse the protection domain. See ClassLoaderUtils.define and defineDecorator.
                return null;
            }

            objects.newInstance(Thing)
"""

        expect:
        fails()
        failure.assertHasCause("Could not create an instance of type Thing.")
        failure.assertHasCause("Could not generate a decorated class for type Thing.")
        failure.assertHasCause("Cannot have abstract method Thing.getProp().")
    }

    def "services are injected into instances using constructor or getter"() {
        buildFile """

/**
 * Wraps another {@link JavaCompiler.CompilationTask} and sets up its annotation processors
 * according to the provided processor declarations and processor path. Incremental processors
 * are decorated in order to validate their behavior.
 *
 * This class also serves a purpose when incremental annotation processing is not active.
 * It replaces the normal processor discovery, which suffers from file descriptor leaks