object : TestListener {
            override fun beforeTest(test: TestDescriptor) = Unit
            override fun afterTest(test: TestDescriptor, result: TestResult) = Unit
            override fun beforeSuite(suite: TestDescriptor) {
                if (suite.parent == null) {
                    forEachJavaProcess { pid, _ ->
                        // processes that exist before the test suite execution should

@EventScope(Scope.Build.class)
@DeprecatedInGradleScope
public interface TestListener {
    /**
     * Called before a test suite is started.
     * @param suite The suite whose tests are about to be executed.
     */
    void beforeSuite(TestDescriptor suite);

    /**
     * Called after a test suite is finished.
     * @param suite The suite whose tests have finished being executed.
     * @param result The aggregate result for the suite.
     */

     *
     * @param closure The closure to call.
     */
    public void beforeSuite(Closure closure) {
        addDispatchAsTestListener("beforeSuite", closure);
    }

    /**
     * <p>Adds a closure to be notified after a test suite has executed. A {@link TestDescriptor} and {@link TestResult} instance are passed to the closure as a

            def listener = new TestListenerImpl()
            test {
                addTestListener(listener)
            }
            class TestListenerImpl implements TestListener {
                void beforeSuite(TestDescriptor suite) { println "START [$suite] [$suite.name]" }
                void afterSuite(TestDescriptor suite, TestResult result) { println "FINISH [$suite] [$suite.name]" }

    def "reports unsupported build listener #listenerType registration on #registrationPoint"() {
        given:
        buildFile("""
            class TestAdapter implements TestListener {
                @Override void beforeSuite(TestDescriptor suite) {}
                @Override void afterSuite(TestDescriptor suite, TestResult result) {}
                @Override void beforeTest(TestDescriptor testDescriptor) {}

Method <org.gradle.api.tasks.testing.AbstractTestTask.beforeSuite(groovy.lang.Closure)> has arguments/return type groovy.lang.Closure that is not Gradle public API or primitive or built-in JDK classes or Kotlin classes in (AbstractTestTask.java:0)