1 /* 2 * Copyright (c) 2016, 2017, 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 /test/lib .. 28 * @compile p2/c2.java 29 * @compile p1/c1.java 30 * @build sun.hotspot.WhiteBox 31 * @compile/module=java.base java/lang/ModuleHelper.java 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI ExportTwice 35 */ 36 37 import static jdk.test.lib.Asserts.*; 38 39 public class ExportTwice { 40 41 // Check that a package can not be exported unqualifiedly, and then exported 42 // to a specific package. 43 // Also, check that a package can be exported to a specific package and then 44 // exported unqualifiedly. 45 public static void main(String args[]) throws Throwable { 46 Object m1x, m2x, m3x; 47 48 // Get the java.lang.Module object for module java.base. 49 Class jlObject = Class.forName("java.lang.Object"); 50 Object jlObject_jlM = jlObject.getModule(); 51 assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null"); 52 53 // Get the class loader for ExportTwice and assume it's also used to 54 // load classes p1.c1 and p2.c2. 55 ClassLoader this_cldr = ExportTwice.class.getClassLoader(); 56 57 // Define a module for p1. 58 m1x = ModuleHelper.ModuleObject("module_one", this_cldr, new String[] { "p1" }); 59 assertNotNull(m1x, "Module should not be null"); 60 ModuleHelper.DefineModule(m1x, "9.0", "m1x/here", new String[] { "p1" }); 61 ModuleHelper.AddReadsModule(m1x, jlObject_jlM); 62 63 // Define a module for p2. 64 m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" }); 65 assertNotNull(m2x, "Module should not be null"); 66 ModuleHelper.DefineModule(m2x, "9.0", "m2x/there", new String[] { "p2" }); 67 ModuleHelper.AddReadsModule(m2x, jlObject_jlM); 68 69 // Define a module for p3. 70 m3x = ModuleHelper.ModuleObject("module_three", this_cldr, new String[] { "p3" }); 71 assertNotNull(m3x, "Module should not be null"); 72 ModuleHelper.DefineModule(m3x, "9.0", "m3x/there", new String[] { "p3" }); 73 ModuleHelper.AddReadsModule(m3x, jlObject_jlM); 74 75 // Make package p1 in m1x visible to everyone. 76 ModuleHelper.AddModuleExportsToAll(m1x, "p1"); 77 78 // Try to export p1 only to m2x after it was exported unqualifiedly. It 79 // should silently succeed. 80 ModuleHelper.AddModuleExports(m1x, "p1", m2x); 81 82 // Export p2 to m3x then export it again unqualifiedly. 83 ModuleHelper.AddModuleExports(m2x, "p2", m3x); 84 ModuleHelper.AddModuleExportsToAll(m2x, "p2"); 85 86 // p1.c1's ctor tries to call a method in p2.c2. This should work because 87 // p1's module can read p2's module and p2 is now exported unqualifiedly. 88 ModuleHelper.AddReadsModule(m1x, m2x); 89 Class p1_c1_class = Class.forName("p1.c1"); 90 p1_c1_class.newInstance(); 91 } 92 }