1 /* 2 * Copyright (c) 2016, 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 * @modules java.base/jdk.internal.misc 27 * @library /testlibrary /test/lib /compiler/whitebox .. 28 * @build sun.hotspot.WhiteBox 29 * @compile/module=java.base java/lang/reflect/ModuleHelper.java 30 * @run main ClassFileInstaller sun.hotspot.WhiteBox 31 * sun.hotspot.WhiteBox$WhiteBoxPermission 32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI JVMCanReadModule 33 */ 34 35 import static jdk.test.lib.Asserts.*; 36 37 public class JVMCanReadModule { 38 39 public static void main(String args[]) throws Throwable { 40 MyClassLoader asking_cl = new MyClassLoader(); 41 MyClassLoader target_cl = new MyClassLoader(); 42 Object asking_module, target_module; 43 boolean result; 44 45 asking_module = ModuleHelper.ModuleObject("asking_module", asking_cl, new String[] { "mypackage" }); 46 assertNotNull(asking_module, "Module should not be null"); 47 ModuleHelper.DefineModule(asking_module, "9.0", "asking_module/here", new String[] { "mypackage" }); 48 target_module = ModuleHelper.ModuleObject("target_module", target_cl, new String[] { "yourpackage" }); 49 assertNotNull(target_module, "Module should not be null"); 50 ModuleHelper.DefineModule(target_module, "9.0", "target_module/here", new String[] { "yourpackage" }); 51 52 // Set up relationship 53 ModuleHelper.AddReadsModule(asking_module, target_module); 54 55 // Null asking_module argument, expect an NPE 56 try { 57 result = ModuleHelper.CanReadModule(null, target_module); 58 throw new RuntimeException("Failed to get the expected NPE"); 59 } catch(NullPointerException e) { 60 // Expected 61 } 62 63 // Bad asking_module argument, expect an IAE 64 try { 65 result = ModuleHelper.CanReadModule(asking_cl, target_module); 66 throw new RuntimeException("Failed to get the expected IAE"); 67 } catch(IllegalArgumentException e) { 68 // Expected 69 } 70 71 // Bad target_module argument, expect an IAE 72 try { 73 result = ModuleHelper.CanReadModule(asking_module, asking_cl); 74 throw new RuntimeException("Failed to get the expected IAE"); 75 } catch(IllegalArgumentException e) { 76 // Expected 77 } 78 79 // Verify strict modules can not read the unnamed module 80 result = ModuleHelper.CanReadModule(target_module, null); 81 assertFalse(result, "target_module can not read unnamed module"); 82 83 // Verify asking_module can read itself 84 result = ModuleHelper.CanReadModule(asking_module, asking_module); 85 assertTrue(result, "asking_module can read itself"); 86 87 // Verify asking_module can read target_module 88 result = ModuleHelper.CanReadModule(asking_module, target_module); 89 assertTrue(result, "asking_module can read target_module"); 90 91 // Verify target_module cannot read asking_module 92 result = ModuleHelper.CanReadModule(target_module, asking_module); 93 assertTrue(!result, "target_module cannot read asking_module"); 94 } 95 96 static class MyClassLoader extends ClassLoader { } 97 }