@Issue("https://github.com/gradle/gradle/issues/3545")
    def "runs onAfterClass hook only once per test class"() {
        given:
        def testClass = Stub(ITestClass) {
            getTestMethods() >> []
        }
        resultProcessorAdapter.onBeforeClass(testClass)

        when:
        resultProcessorAdapter.onAfterClass(testClass)

        then:

    /**
     * for compatibility reasons with testng 6.9.10
     */
    void onBeforeClass(ITestClass testClass, IMethodInstance mi);

    void onAfterClass(ITestClass testClass);

    /**
     * for compatibility reasons with testng 6.9.10
     */
    void onAfterClass(ITestClass testClass, IMethodInstance mi);

        }
    }

    @Override
    public void onBeforeClass(ITestClass testClass, IMethodInstance mi) {
    }

    @Override
    public void onAfterClass(ITestClass testClass) {
        Object id = null;
        synchronized (lock) {
            TestClassInfo info = testClassInfo.get(testClass);
            if (info != null) {