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 AccessCheckWorks
  35  */
  36 
  37 import static jdk.test.lib.Asserts.*;
  38 
  39 public class AccessCheckWorks {
  40 
  41     // Check that a class in a package in module_one can successfully access a
  42     // class in module_two when module_one can read module_two and the class's package
  43     // has been exported.
  44     public static void main(String args[]) throws Throwable {
  45         Object m1x, m2x;
  46 
  47         // Get the java.lang.Module object for module java.base.
  48         Class jlObject = Class.forName("java.lang.Object");
  49         Object jlObject_jlM = jlObject.getModule();
  50         assertNotNull(jlObject_jlM, "jlModule object of java.lang.Object should not be null");
  51 
  52         // Get the class loader for AccessCheckWorks and assume it's also used to
  53         // load classes p1.c1 and p2.c2.
  54         ClassLoader this_cldr = AccessCheckWorks.class.getClassLoader();
  55 
  56         // Define a module for p1.
  57         m1x = ModuleHelper.ModuleObject("module_one", this_cldr, new String[] { "p1" });
  58         assertNotNull(m1x, "Module should not be null");
  59         ModuleHelper.DefineModule(m1x, "9.0", "m1x/here", new String[] { "p1" });
  60         ModuleHelper.AddReadsModule(m1x, jlObject_jlM);
  61 
  62         // Define a module for p2.
  63         m2x = ModuleHelper.ModuleObject("module_two", this_cldr, new String[] { "p2" });
  64         assertNotNull(m2x, "Module should not be null");
  65         ModuleHelper.DefineModule(m2x, "9.0", "m2x/there", new String[] { "p2" });
  66         ModuleHelper.AddReadsModule(m2x, jlObject_jlM);
  67 
  68         // Make package p1 in m1x visible to everyone.
  69         ModuleHelper.AddModuleExportsToAll(m1x, "p1");
  70 
  71         // p1.c1's ctor tries to call a method in p2.c2.  This should work because
  72         // p1's module can read p2's module and p2 is exported to p1's module.
  73         ModuleHelper.AddReadsModule(m1x, m2x);
  74         ModuleHelper.AddModuleExports(m2x, "p2", m1x);
  75         Class p1_c1_class = Class.forName("p1.c1");
  76         p1_c1_class.newInstance();
  77     }
  78 }
  79