1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 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 21 * questions. 22 */ 23 24 import java.util.logging.*; 25 26 /* 27 * @test 28 * @bug 8010727 29 * @summary LogManager.addLogger should succeed to add a logger named "" 30 * if LogManager.getLogger("") returns null. 31 * 32 * @run main LogManagerInstanceTest 33 */ 34 35 public class LogManagerInstanceTest { main(String[] argv)36 public static void main(String[] argv) { 37 LogManager mgr = LogManager.getLogManager(); 38 if (getRootLogger(mgr) == null) { 39 throw new RuntimeException("Root logger not exist"); 40 } 41 42 SecondLogManager mgr2 = new SecondLogManager(); 43 Logger root = getRootLogger(mgr2); 44 if (mgr2.base != root) { 45 throw new RuntimeException(mgr2.base + " is not the root logger"); 46 } 47 } 48 getRootLogger(LogManager mgr)49 private static Logger getRootLogger(LogManager mgr) { 50 Logger l = mgr.getLogger(""); 51 if (l != null && !l.getName().isEmpty()) { 52 throw new RuntimeException(l.getName() + " is not an invalid root logger"); 53 } 54 return l; 55 } 56 57 static class SecondLogManager extends LogManager { 58 final Logger base; SecondLogManager()59 private SecondLogManager() { 60 Logger root = getLogger(""); 61 if (root == null) { 62 root = new BaseLogger("", null); 63 if (!super.addLogger(root)) 64 throw new RuntimeException("Fail to addLogger " + root); 65 } else { 66 throw new RuntimeException("Root logger already exists"); 67 } 68 this.base = root; 69 } 70 } 71 static class BaseLogger extends Logger { BaseLogger(String name, String rbname)72 BaseLogger(String name, String rbname) { 73 super(name, rbname); 74 } 75 } 76 } 77