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 /java/lang/invoke/common
 29  * @enablePreview
 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() {
 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         } 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         } catch (Exception e) {
101             throw new InternalError();
102         }
103         throw t;
104     }
105 
106     static MethodHandle thrower(String message, Class<? extends Throwable> t) {
107         try {
108             return InstructionHelper.ldcDynamicConstant(
109                     MethodHandles.lookup(),
110                     message, t,
111                     "throwingBsm",
112                     methodType(Throwable.class, MethodHandles.Lookup.class, String.class, Class.class)
113             );
114         } catch (Exception e) {
115             throw new Error(e);
116         }
117     }
118 }