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/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @build Initializer Test ExceptionInClassInitialization
* @run main ExceptionInClassInitialization
* @summary ensure InvocationTargetException thrown due to the initialization of
* the declaring class wrapping with the proper cause
*/
import java.lang.reflect.InvocationTargetException;
public class ExceptionInClassInitialization {
public static void main(String... argv) throws ReflectiveOperationException {
Class<?> c = Class.forName("Initializer");
testExecMethod(c);
testFieldAccess(c);
}
static void testExecMethod(Class<?> cls) throws ReflectiveOperationException {
try {
cls.getDeclaredMethod("execMethod").invoke(null);
throw new RuntimeException("InvocationTargetException not thrown");
} catch (InvocationTargetException e) {
// InvocationTargetException wraps the exception that was thrown while reflection.
Throwable t = e.getCause();
if (t instanceof ExceptionInInitializerError eiie) {
if (eiie.getCause() instanceof MyException) {
return;
}
throw new RuntimeException("ExceptionInInitializerError due to other exception than MyException!", eiie);
}
throw new RuntimeException("InvocationTargetException was thrown not due to error while initialization!", e);
}
}
static void testFieldAccess(Class<?> cls) throws ReflectiveOperationException {
try {
cls.getDeclaredMethod("fieldAccess").invoke(null);
throw new RuntimeException("InvocationTargetException not thrown");
} catch (InvocationTargetException e) {
// the class initialization was run and failed. NoClassDefFoundError
// should be thrown in this second attempt.
Throwable t = e.getCause();
if (t instanceof NoClassDefFoundError ncdfe) {
t = t.getCause();
if (t instanceof ExceptionInInitializerError eiie) {
return;
}
}
throw new RuntimeException("InvocationTargetException was thrown not due to error while initialization!", e);
}
}
}
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