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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

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package jdk.jfr.api.consumer;

import java.util.List;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedClass;

import jdk.jfr.consumer.RecordedClassLoader;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Asserts;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

import jdk.test.lib.jfr.TestClassLoader;

/*

 * @test

 * @summary Verifies the methods of the RecordedClassLoader

 * @key jfr

 * @library /test/lib

 * @run main/othervm jdk.jfr.api.consumer.TestRecordedClassLoader

 */

public class TestRecordedClassLoader {

    private final static String TEST_CLASS_NAME = "jdk.jfr.api.consumer.TestRecordedClassLoader$MyTestClass";

    private final static String EVENT_NAME = EventNames.ClassDefine;

    static class MyTestClass {

    }

    public static void main(String[] args) throws Exception {

        Recording recording = new Recording();

        recording.enable(EVENT_NAME).withoutStackTrace();

        TestClassLoader cl = new TestClassLoader();

        recording.start();

        cl.loadClass(TEST_CLASS_NAME);

        recording.stop();

        List<RecordedEvent> events = Events.fromRecording(recording);

        boolean isDefined = false;

        for (RecordedEvent event : events) {

            RecordedClass definedClass = event.getValue("definedClass");

            if (TEST_CLASS_NAME.equals(definedClass.getName())) {

                System.out.println(event);

                // get the RecordedClassLoader from the RecordedClass, the "definedClass"

                RecordedClassLoader definingClassLoader = definedClass.getClassLoader();

                Asserts.assertNotNull(definingClassLoader, "Defining Class Loader should not be null");

                // invoke RecordedClassLoader.getType() in order to validate the type of the RecordedClassLoader

                RecordedClass definingClassLoaderType = definingClassLoader.getType();

                Asserts.assertNotNull(definingClassLoaderType, "The defining Class Loader type should not be null");

                // verify matching types

                Asserts.assertEquals(cl.getClass().getName(), definingClassLoaderType.getName(),

                    "Expected type " + cl.getClass().getName() + ", got type " + definingClassLoaderType.getName());

                // get a RecordedClassLoader directly from the "definingClassLoader" field as well

                RecordedClassLoader definingClassLoaderFromField = event.getValue("definingClassLoader");

                Asserts.assertNotNull(definingClassLoaderFromField,

                    "Defining Class Loader instantatiated from field should not be null");

                // ensure that the class loader instance used in the test actually has a name

                Asserts.assertNotNull(cl.getName(),

                    "Expected a valid name for the TestClassLoader");

                // invoke RecordedClassLoader.getName() to get the name of the class loader instance

                Asserts.assertEquals(cl.getName(), definingClassLoader.getName(),

                    "Defining Class Loader should have the same name as the original class loader");

                Asserts.assertEquals(definingClassLoaderFromField.getName(), definingClassLoader.getName(),

                    "Defining Class Loader representations should have the same class loader name");

                // invoke uniqueID()

                Asserts.assertGreaterThan(definingClassLoader.getId(), 0L, "Invalid id assignment");

                // second order class loader information ("check class loader of the class loader")

                RecordedClassLoader classLoaderOfDefClassLoader = definingClassLoaderType.getClassLoader();

                Asserts.assertNotNull(classLoaderOfDefClassLoader,

                    "The class loader for the definining class loader should not be null");

                Asserts.assertEquals(cl.getClass().getClassLoader().getName(), classLoaderOfDefClassLoader.getName(),

                    "Expected class loader name " + cl.getClass().getClassLoader().getName() + ", got name " + classLoaderOfDefClassLoader.getName());

                RecordedClass classLoaderOfDefClassLoaderType = classLoaderOfDefClassLoader.getType();

                Asserts.assertNotNull(classLoaderOfDefClassLoaderType,

                    "The class loader type for the defining class loader should not be null");

                Asserts.assertEquals(cl.getClass().getClassLoader().getClass().getName(), classLoaderOfDefClassLoaderType.getName(),

                    "Expected type " + cl.getClass().getClassLoader().getClass().getName() + ", got type " + classLoaderOfDefClassLoaderType.getName());

                Asserts.assertGreaterThan(definingClassLoader.getId(), classLoaderOfDefClassLoader.getId(),

                    "expected id assignment invariant broken for Class Loaders");

                isDefined = true;

            }

        }

        Asserts.assertTrue(isDefined, "No class define event found to verify RecordedClassLoader");

    }

}