1 /*
   2  * Copyright (c) 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  * @bug 8186046
  27  * @summary Test bootstrap methods throwing an exception
  28  * @library /lib/testlibrary/bytecode  /java/lang/invoke/common
  29  * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper
  30  * @run testng CondyBSMException
  31  */
  32 
  33 import org.testng.Assert;
  34 import org.testng.annotations.Test;
  35 import test.java.lang.invoke.lib.InstructionHelper;
  36 
  37 import java.lang.invoke.MethodHandle;
  38 import java.lang.invoke.MethodHandles;
  39 import java.lang.reflect.Constructor;
  40 
  41 import static java.lang.invoke.MethodType.methodType;
  42 
  43 public class CondyBSMException {
  44 
  45     @Test
  46     public void testThrowable() {
  47         test("Throwable", BootstrapMethodError.class, Throwable.class);
  48     }
  49 
  50     @Test
  51     public void testError() {
  52         test("Error", Error.class);
  53     }
  54 
  55     @Test
  56     public void testBootstrapMethodError() {
  57         test("BootstrapMethodError", BootstrapMethodError.class);
  58     }
  59 
  60     @Test
  61     public void testRuntimeException() {
  62         test("RuntimeException", BootstrapMethodError.class, RuntimeException.class);
  63     }
  64 
  65     @Test
  66     public void testException() throws Throwable {
  67         test("Exception", BootstrapMethodError.class, Exception.class);
  68     }
  69 
  70     static void test(String message, Class<? extends Throwable>... ts) {
  71         MethodHandle mh = thrower(message, ts[ts.length - 1]);
  72         Throwable caught = null;
  73         try {
  74             mh.invoke();
  75         }
  76         catch (Throwable t) {
  77             caught = t;
  78         }
  79 
  80         if (caught == null) {
  81             Assert.fail("Throwable expected");
  82         }
  83 
  84         String actualMessage = null;
  85         for (int i = 0; i < ts.length; i++) {
  86             actualMessage = caught.getMessage();
  87             Assert.assertNotNull(caught);
  88             Assert.assertTrue(ts[i].isAssignableFrom(caught.getClass()));
  89             caught = caught.getCause();
  90         }
  91 
  92         Assert.assertEquals(actualMessage, message);
  93     }
  94 
  95     static Throwable throwingBsm(MethodHandles.Lookup l, String name, Class<Throwable> type) throws Throwable {
  96         Throwable t;
  97         try {
  98             Constructor<Throwable> c = type.getDeclaredConstructor(String.class);
  99             t = c.newInstance(name);
 100         }
 101         catch (Exception e) {
 102             throw new InternalError();
 103         }
 104         throw t;
 105     }
 106 
 107     static MethodHandle thrower(String message, Class<? extends Throwable> t) {
 108         try {
 109             return InstructionHelper.ldcDynamicConstant(
 110                     MethodHandles.lookup(),
 111                     message, t,
 112                     "throwingBsm", methodType(Throwable.class, MethodHandles.Lookup.class, String.class, Class.class),
 113                     S -> { });
 114         } catch (Exception e) {
 115             throw new Error(e);
 116         }
 117     }
 118 }