author | shurailine |
Tue, 27 Oct 2015 20:06:02 -0700 | |
changeset 33402 | 1156d495a525 |
parent 30376 | 2ccf2cf7ea48 |
permissions | -rw-r--r-- |
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/* |
30376
2ccf2cf7ea48
8078896: Add @modules as needed to the jdk_svc tests
ykantser
parents:
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changeset
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* Copyright (c) 2003, 2015, 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 4882798 5067523 |
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* @summary insure redefine is supported. exercise a class, then redefine it and do it again |
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* @author Gabriel Adauto, Wily Technology |
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* |
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* @run build RedefineClassesTests |
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* @run shell RedefineSetUp.sh |
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* @run shell MakeJAR.sh redefineAgent |
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* @run main/othervm -javaagent:redefineAgent.jar RedefineClassesTests RedefineClassesTests |
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*/ |
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import java.io.*; |
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import java.lang.instrument.*; |
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import java.lang.reflect.*; |
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public class |
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RedefineClassesTests |
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extends ASimpleInstrumentationTestCase |
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{ |
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/** |
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* Constructor for RedefineClassesTests. |
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* @param name |
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*/ |
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public RedefineClassesTests(String name) |
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{ |
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super(name); |
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} |
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public static void |
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main (String[] args) |
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throws Throwable { |
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ATestCaseScaffold test = new RedefineClassesTests(args[0]); |
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test.runTest(); |
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} |
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protected final void |
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doRunTest() |
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throws Throwable { |
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testIsRedefineClassesSupported(); |
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testSimpleRedefineClasses(); |
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testUnmodifiableClassException(); |
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} |
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public void |
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testIsRedefineClassesSupported() |
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{ |
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boolean canRedef = fInst.isRedefineClassesSupported(); |
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assertTrue("Cannot redefine classes", canRedef); |
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} |
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public void |
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testSimpleRedefineClasses() |
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throws Throwable |
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{ |
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// first load the class and prove that it is the right one |
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ExampleRedefine ex = new ExampleRedefine(); |
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// with this version of the class, doSomething is a nop |
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int firstGet = ex.get(); |
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ex.doSomething(); |
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int secondGet = ex.get(); |
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assertEquals(firstGet, secondGet); |
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// now redefine the class. This will change doSomething to be an increment |
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// this class is stored in a different place (scratch directory) to avoid collisions |
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File f = new File("Different_ExampleRedefine.class"); |
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System.out.println("Reading test class from " + f); |
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InputStream redefineStream = new FileInputStream(f); |
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byte[] redefineBuffer = NamedBuffer.loadBufferFromStream(redefineStream); |
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ClassDefinition redefineParamBlock = new ClassDefinition( ExampleRedefine.class, |
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redefineBuffer); |
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fInst.redefineClasses(new ClassDefinition[] {redefineParamBlock}); |
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int thirdGet = ex.get(); |
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ex.doSomething(); |
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int fourthGet = ex.get(); |
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assertEquals(thirdGet + 1, fourthGet); |
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} |
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public void |
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testUnmodifiableClassException() |
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throws Throwable |
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{ |
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System.out.println("Testing UnmodifiableClassException"); |
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// Load any class |
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File f = new File("Different_ExampleRedefine.class"); |
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InputStream redefineStream = new FileInputStream(f); |
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byte[] redefineBuffer = NamedBuffer.loadBufferFromStream(redefineStream); |
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System.out.println("Try to redefine class for primitive type"); |
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try { |
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ClassDefinition redefineParamBlock = |
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new ClassDefinition( byte.class, redefineBuffer ); |
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fInst.redefineClasses(new ClassDefinition[] {redefineParamBlock}); |
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fail(); |
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} catch (UnmodifiableClassException x) { |
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} |
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System.out.println("Try to redefine class for array type"); |
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try { |
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ClassDefinition redefineParamBlock = |
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new ClassDefinition( byte[].class, redefineBuffer ); |
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fInst.redefineClasses(new ClassDefinition[] {redefineParamBlock}); |
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fail(); |
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} catch (UnmodifiableClassException x) { |
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} |
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} |
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} |