1 /*
   2  * Copyright (c) 2015, 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 /test/lib ..
  28  * @compile p2/c2.java
  29  * @compile p1/c1.java
  30  * @build sun.hotspot.WhiteBox
  31  * @compile/module=java.base java/lang/reflect/ModuleHelper.java
  32  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  33  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI CCE_module_msg
  35  */
  36 
  37 import java.lang.reflect.Module;
  38 import static jdk.test.lib.Asserts.*;
  39 
  40 // Test that the message in a runtime ClassCastException contains module info.
  41 public class CCE_module_msg {
  42 
  43     public static void main(String[] args) throws Throwable {
  44         // Should not display version
  45         invalidObjectToDerived();
  46         // Should display version
  47         invalidClassToString();
  48     }
  49 
  50     public static void invalidObjectToDerived() {
  51         java.lang.Object instance = new java.lang.Object();
  52         int left = 23;
  53         int right = 42;
  54         try {
  55             for (int i = 0; i < 1; i += 1) {
  56                 left = ((Derived) instance).method(left, right);
  57             }
  58             throw new RuntimeException("ClassCastException wasn't thrown, test failed.");
  59         } catch (ClassCastException cce) {
  60             System.out.println(cce.getMessage());
  61             if (!cce.getMessage().contains("java.base/java.lang.Object cannot be cast to Derived")) {
  62                 throw new RuntimeException("Wrong message: " + cce.getMessage());
  63             }
  64         }
  65     }
  66 
  67     public static void invalidClassToString() throws Throwable {
  68         Object m1, m2;
  69 
  70         // Get the java.lang.reflect.Module object for module java.base.
  71         Class jlObject = Class.forName("java.lang.Object");
  72         Object jlObject_jlrM = jlObject.getModule();
  73         assertNotNull(jlObject_jlrM, "jlrModule object of java.lang.Object should not be null");
  74 
  75         // Get the class loader for AccessCheckRead and assume it's also used to
  76         // load classes p1.c1 and p2.c2.
  77         ClassLoader this_cldr = AccessCheckRead.class.getClassLoader();
  78 
  79         // Define a module for p1.
  80         m1 = ModuleHelper.ModuleObject("module1", this_cldr, new String[] { "p1" });
  81         assertNotNull(m1, "Module should not be null");
  82         ModuleHelper.DefineModule(m1, "9.0", "m1/here", new String[] { "p1" });
  83         ModuleHelper.AddReadsModule(m1, jlObject_jlrM);
  84 
  85         // Define a module for p2.
  86         m2 = ModuleHelper.ModuleObject("module2", this_cldr, new String[] { "p2" });
  87         assertNotNull(m2, "Module should not be null");
  88         ModuleHelper.DefineModule(m2, "9.0", "m2/there", new String[] { "p2" });
  89         ModuleHelper.AddReadsModule(m2, jlObject_jlrM);
  90 
  91         try {
  92             ModuleHelper.AddModuleExportsToAll(m2, "p2");
  93             Object p2Obj = new p2.c2();
  94             System.out.println((String)p2Obj);
  95         } catch (ClassCastException cce) {
  96             String exception = cce.getMessage();
  97             System.out.println(exception);
  98             if (exception.contains("module2/p2.c2") ||
  99                 !(exception.contains("module2@") &&
 100                   exception.contains("/p2.c2 cannot be cast to java.base/java.lang.String"))) {
 101                 throw new RuntimeException("Wrong message: " + exception);
 102             }
 103         }
 104     }
 105 }
 106 
 107 class Derived extends java.lang.Object {
 108     public int method(int left, int right) {
 109         return right;
 110     }
 111 }