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 /test/lib/bytecode  /java/lang/invoke/common
  29  * @build jdk.experimental.bytecode.BasicClassBuilder test.java.lang.invoke.lib.InstructionHelper
  30  * @run testng CondyBSMException
  31  * @run testng/othervm -XX:+UnlockDiagnosticVMOptions -XX:UseBootstrapCallInfo=3 CondyBSMException
  32  */
  33 
  34 import org.testng.Assert;
  35 import org.testng.annotations.Test;
  36 import test.java.lang.invoke.lib.InstructionHelper;
  37 
  38 import java.lang.invoke.MethodHandle;
  39 import java.lang.invoke.MethodHandles;
  40 import java.lang.reflect.Constructor;
  41 
  42 import static java.lang.invoke.MethodType.methodType;
  43 
  44 public class CondyBSMException {
  45 
  46     @Test
  47     public void testThrowable() {
  48         test("Throwable", BootstrapMethodError.class, Throwable.class);
  49     }
  50 
  51     @Test
  52     public void testError() {
  53         test("Error", Error.class);
  54     }
  55 
  56     @Test
  57     public void testBootstrapMethodError() {
  58         test("BootstrapMethodError", BootstrapMethodError.class);
  59     }
  60 
  61     @Test
  62     public void testRuntimeException() {
  63         test("RuntimeException", BootstrapMethodError.class, RuntimeException.class);
  64     }
  65 
  66     @Test
  67     public void testException() throws Throwable {
  68         test("Exception", BootstrapMethodError.class, Exception.class);
  69     }
  70 
  71     static void test(String message, Class<? extends Throwable>... ts) {
  72         MethodHandle mh = thrower(message, ts[ts.length - 1]);
  73         Throwable caught = null;
  74         try {
  75             mh.invoke();
  76         }
  77         catch (Throwable t) {
  78             caught = t;
  79         }
  80 
  81         if (caught == null) {
  82             Assert.fail("Throwable expected");
  83         }
  84 
  85         String actualMessage = null;
  86         for (int i = 0; i < ts.length; i++) {
  87             actualMessage = caught.getMessage();
  88             Assert.assertNotNull(caught);
  89             Assert.assertTrue(ts[i].isAssignableFrom(caught.getClass()));
  90             caught = caught.getCause();
  91         }
  92 
  93         Assert.assertEquals(actualMessage, message);
  94     }
  95 
  96     static Throwable throwingBsm(MethodHandles.Lookup l, String name, Class<Throwable> type) throws Throwable {
  97         Throwable t;
  98         try {
  99             Constructor<Throwable> c = type.getDeclaredConstructor(String.class);
 100             t = c.newInstance(name);
 101         }
 102         catch (Exception e) {
 103             throw new InternalError();
 104         }
 105         throw t;
 106     }
 107 
 108     static MethodHandle thrower(String message, Class<? extends Throwable> t) {
 109         try {
 110             return InstructionHelper.ldcDynamicConstant(
 111                     MethodHandles.lookup(),
 112                     message, t,
 113                     "throwingBsm", methodType(Throwable.class, MethodHandles.Lookup.class, String.class, Class.class),
 114                     S -> { });
 115         } catch (Exception e) {
 116             throw new Error(e);
 117         }
 118     }
 119 }