81 lines
2.7 KiB
Java
81 lines
2.7 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8150778
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* @summary Test exception depths, and code to get stack traces
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* @modules java.base/jdk.internal.misc:open
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* @modules java.base/java.lang:open
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* @library /test/lib
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* @run main/othervm -XX:MaxJavaStackTraceDepth=1024 TestThrowable
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*/
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import java.lang.reflect.Field;
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import jdk.test.lib.Asserts;
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public class TestThrowable {
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// Inner class that throws a lot of exceptions
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static class Thrower {
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static int MaxJavaStackTraceDepth = 1024; // as above
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int[] depths = {10, 34, 100, 1023, 1024, 1025};
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int count = 0;
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int getDepth(Throwable t) throws Exception {
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Field f = Throwable.class.getDeclaredField("depth");
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f.setAccessible(true); // it's private
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return f.getInt(t);
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}
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void callThrow(int depth) {
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if (++count < depth) {
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callThrow(depth);
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} else {
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throw new RuntimeException("depth tested " + depth);
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}
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}
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void testThrow() throws Exception {
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for (int d : depths) {
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try {
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count = getDepth(new Throwable());
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callThrow(d);
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} catch(Exception e) {
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e.getStackTrace();
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System.out.println(e.getMessage());
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int throwableDepth = getDepth(e);
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Asserts.assertTrue(throwableDepth == d ||
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(d > MaxJavaStackTraceDepth && throwableDepth == MaxJavaStackTraceDepth),
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"depth should return the correct value: depth tested=" +
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d + " throwableDepth=" + throwableDepth);
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}
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}
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}
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}
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public static void main(String... unused) throws Exception {
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Thrower t = new Thrower();
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t.testThrow();
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}
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}
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