1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.
8  *
9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
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22  */
23 
24 /*
25  * @test
26  * @bug 8216363
27  * @summary Test that Handler.isLoggable(null) returns false
28  * @run main/othervm IsLoggableHandlerTest
29  */
30 import java.io.File;
31 import java.io.IOException;
32 import java.util.UUID;
33 import java.util.logging.ConsoleHandler;
34 import java.util.logging.FileHandler;
35 import java.util.logging.Handler;
36 import java.util.logging.Level;
37 import java.util.logging.LogRecord;
38 import java.util.logging.MemoryHandler;
39 import java.util.logging.StreamHandler;
40 import java.util.stream.Stream;
41 
42 public class IsLoggableHandlerTest {
43 
44 
main(String... args)45     public static void main(String... args) throws IOException {
46         String userDir = System.getProperty("user.dir", ".");
47         File logfile = new File(userDir, "IsLoggableHandlerTest_" + UUID.randomUUID() + ".log");
48         try {
49             System.out.println("Dummy logfile: " + logfile.getAbsolutePath());
50             Handler h = new CustomHandler();
51             testIsLoggable(h);
52             testIsLoggable(new MemoryHandler(h, 1, Level.ALL));
53             testIsLoggable(new StreamHandler(System.out, new java.util.logging.SimpleFormatter()));
54             testIsLoggable(new FileHandler(logfile.getAbsolutePath()));
55             testIsLoggable(new ConsoleHandler());
56         } finally {
57             if (logfile.canRead()) {
58                 try {
59                     System.out.println("Deleting dummy logfile: " + logfile.getAbsolutePath());
60                     logfile.delete();
61                 } catch (Throwable t) {
62                     System.out.println("Warning: failed to delete dummy logfile: " + t);
63                     t.printStackTrace();
64                 }
65             }
66         }
67     }
68 
testIsLoggable(Handler h)69     public static void testIsLoggable(Handler h) {
70         System.out.println("Testing " + h.getClass().getName());
71         // should not throw NPE but return false
72         if (h.isLoggable(null)) {
73             throw new AssertionError(h.getClass().getName()
74                     + ": null record should not be loggable");
75         }
76         h.setLevel(Level.ALL);
77         // should still not throw NPE but return false
78         if (h.isLoggable(null)) {
79             throw new AssertionError(h.getClass().getName()
80                     + ": null record should not be loggable");
81         }
82         // should not throw NPE
83         h.publish(null);
84     }
85 
86     public static final class CustomHandler extends Handler {
87         @Override
publish(LogRecord record)88         public void publish(LogRecord record) { }
89         @Override
flush()90         public void flush() { }
91         @Override
close()92         public void close() throws SecurityException { }
93     }
94 
95 
96 }
97