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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

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

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * 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

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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 */

/*

 * @test

 * @bug 8216363

 * @summary Test that Handler.isLoggable(null) returns false

 * @run main/othervm IsLoggableHandlerTest

 */

import java.io.File;

import java.io.IOException;

import java.util.UUID;

import java.util.logging.ConsoleHandler;

import java.util.logging.FileHandler;

import java.util.logging.Handler;

import java.util.logging.Level;

import java.util.logging.LogRecord;

import java.util.logging.MemoryHandler;

import java.util.logging.StreamHandler;

import java.util.stream.Stream;

public class IsLoggableHandlerTest {

    public static void main(String... args) throws IOException {

        String userDir = System.getProperty("user.dir", ".");

        File logfile = new File(userDir, "IsLoggableHandlerTest_" + UUID.randomUUID() + ".log");

        try {

            System.out.println("Dummy logfile: " + logfile.getAbsolutePath());

            Handler h = new CustomHandler();

            testIsLoggable(h);

            testIsLoggable(new MemoryHandler(h, 1, Level.ALL));

            testIsLoggable(new StreamHandler(System.out, new java.util.logging.SimpleFormatter()));

            testIsLoggable(new FileHandler(logfile.getAbsolutePath()));

            testIsLoggable(new ConsoleHandler());

        } finally {

            if (logfile.canRead()) {

                try {

                    System.out.println("Deleting dummy logfile: " + logfile.getAbsolutePath());

                    logfile.delete();

                } catch (Throwable t) {

                    System.out.println("Warning: failed to delete dummy logfile: " + t);

                    t.printStackTrace();

                }

            }

        }

    }

    public static void testIsLoggable(Handler h) {

        System.out.println("Testing " + h.getClass().getName());

        // should not throw NPE but return false

        if (h.isLoggable(null)) {

            throw new AssertionError(h.getClass().getName()

                    + ": null record should not be loggable");

        }

        h.setLevel(Level.ALL);

        // should still not throw NPE but return false

        if (h.isLoggable(null)) {

            throw new AssertionError(h.getClass().getName()

                    + ": null record should not be loggable");

        }

        // should not throw NPE

        h.publish(null);

    }

    public static final class CustomHandler extends Handler {

        @Override

        public void publish(LogRecord record) { }

        @Override

        public void flush() { }

        @Override

        public void close() throws SecurityException { }

    }

}