1/* 2 * Copyright (c) 1999, 2011, 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/* 25 * @test 26 * @bug 4273454 7054918 7052537 27 * @library ../testlibrary 28 * @summary Make sure getProviders(filter) doesn't throw NPE 29 * @run main/othervm NoInstalledProviders 30 */ 31 32import java.security.*; 33 34public class NoInstalledProviders { 35 36 public static void main(String[] args) throws Exception { 37 ProvidersSnapshot snapshot = ProvidersSnapshot.create(); 38 try { 39 main0(args); 40 } finally { 41 snapshot.restore(); 42 } 43 } 44 45 public static void main0(String[] args) throws Exception { 46 47 Provider[] provs = Security.getProviders(); 48 // make sure there are no providers in the system 49 for(int i = 0; i < provs.length; i++ ) { 50 Security.removeProvider( provs[i].getName()); 51 } 52 53 String filter = "Signature.SHA1withDSA"; 54 55 provs = Security.getProviders(filter); 56 } 57} 58