jdk-24/test/jdk/java/util/logging/IsLoggableHandlerTest.java
Daniel Fuchs e58a4da301 8216363: NullPointerException in java.util.logging.Handler#isLoggable
The implementation is changed to match the spec: isLoggable(null) returns false.

Reviewed-by: mchung, lancea
2019-02-21 16:57:47 +00:00

97 lines
3.5 KiB
Java

/*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @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 { }
}
}