100 lines
4.3 KiB
Java
100 lines
4.3 KiB
Java
/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2018, SAP SE. 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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import java.lang.reflect.Constructor;
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import java.lang.reflect.Method;
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import org.testng.Assert;
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import org.testng.annotations.Test;
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import jdk.test.lib.dcmd.CommandExecutor;
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import jdk.test.lib.dcmd.JMXExecutor;
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import jdk.test.lib.process.OutputAnalyzer;
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/*
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* @test
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* @summary Test that various diagnostic commands which can show core reflection
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* invocation targets do so correctly (See: JDK-8203343).
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* @library /test/lib
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* @run testng/othervm -Dsun.reflect.noInflation=true ShowReflectionTargetTest
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* @author stuefe
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*/
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public class ShowReflectionTargetTest {
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@SuppressWarnings("unused")
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private static class Dummy {
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int _i;
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public Dummy(int i) { _i = i; }
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public int get_i() { return _i; }
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}
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public void run(CommandExecutor executor) throws Exception {
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// Do some reflection; since we set -Dsun.reflect.noInflation=true, this should
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// immediately generate Generated{Method|Constructor}Accessor objects.
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Class<?> c = Class.forName("ShowReflectionTargetTest$Dummy");
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Constructor<?> ctor = c.getConstructor(int.class);
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Method m = c.getMethod("get_i");
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Object o = ctor.newInstance(17);
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int j = ((Integer)m.invoke(o)).intValue();
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Assert.assertEquals(j, 17);
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// Now invoke VM.class_hierarchy and check its output.
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// Should show reflection targets, e.g.:
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// ....
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// |--jdk.internal.reflect.MagicAccessorImpl/null
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// | |--jdk.internal.reflect.FieldAccessorImpl/null
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// | | |--jdk.internal.reflect.UnsafeFieldAccessorImpl/null
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// | | | |--jdk.internal.reflect.UnsafeStaticFieldAccessorImpl/null
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// | | | | |--jdk.internal.reflect.UnsafeQualifiedStaticFieldAccessorImpl/null
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// | | | | | |--jdk.internal.reflect.UnsafeQualifiedStaticObjectFieldAccessorImpl/null
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// | |--jdk.internal.reflect.ConstructorAccessorImpl/null
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// | | |--jdk.internal.reflect.DelegatingConstructorAccessorImpl/null
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// | | |--jdk.internal.reflect.NativeConstructorAccessorImpl/null
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// > | | |--jdk.internal.reflect.GeneratedConstructorAccessor1/0x00007f75f04889b0 (invokes: java/lang/management/ManagementPermission::<init> (Ljava/lang/String;)V)
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// > | | |--jdk.internal.reflect.GeneratedConstructorAccessor2/0x00007f75f0494990 (invokes: ShowReflectionTargetTest$Dummy::<init> (I)V)
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// | | |--jdk.internal.reflect.BootstrapConstructorAccessorImpl/null
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// | |--jdk.internal.reflect.MethodAccessorImpl/null
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// > | | |--jdk.internal.reflect.GeneratedMethodAccessor1/0x00007f75f0494450 (invokes: ShowReflectionTargetTest$Dummy::get_i ()I)
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// | | |--jdk.internal.reflect.DelegatingMethodAccessorImpl/null
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// ...
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OutputAnalyzer output = executor.execute("VM.class_hierarchy");
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output.shouldMatch(".*jdk.internal.reflect.GeneratedConstructorAccessor.*invokes.*ShowReflectionTargetTest\\$Dummy::<init>.*");
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output.shouldMatch(".*jdk.internal.reflect.GeneratedMethodAccessor.*invokes.*ShowReflectionTargetTest\\$Dummy::get_i.*");
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}
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@Test
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public void jmx() throws Exception {
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run(new JMXExecutor());
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}
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}
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