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/*
* Copyright (c) 2002, 2024, 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.
*/
package nsk.jdi.VirtualMachine.redefineClasses;
import nsk.share.*;
import nsk.share.jpda.*;
import nsk.share.jdi.*;
import com.sun.jdi.*;
import com.sun.jdi.request.*;
import com.sun.jdi.event.*;
import java.util.*;
import java.io.*;
/**
* The test against the method <code>com.sun.jdi.VirtualMachine.redefineClasses()</code>
* and checks up the following assertion: <br>
* "If the bytes do not represent a valid class, <code>ClassFormatError</code>
* will be thrown."
*
* The test consists of the following files: <br>
* <code>redefineclasses029.java</code> - debugger <br>
* <code>redefineclasses029a.java</code> - initial debuggee <br>
*
* This test creates byte code, that has zero-length, and tries it
* to redefine the debugee. The test expects <code>ClassFormatError</code> exception.
* When <code>canRedefineClasses()</code> is <code>false</code>, the test is
* considered as passed and completes it's execution.
*/
public class redefineclasses029 {
public final static String UNEXPECTED_STRING = "***Unexpected exception ";
public final static String EXPECTED_STRING = "!!!Expected exception ";
private final static String prefix = "nsk.jdi.VirtualMachine.redefineClasses.";
private final static String debuggerName = prefix + "redefineclasses029";
private final static String debugeeName = debuggerName + "a";
private static int exitStatus;
private static Log log;
private static Debugee debugee;
private static String statDebugee;
private ReferenceType testedClass;
private static void display(String msg) {
log.display(msg);
}
private static void complain(String msg) {
log.complain("debugger FAILURE> " + msg + "\n");
}
public static void main(String argv[]) {
int result = run(argv,System.out);
if (result != 0) {
throw new RuntimeException("TEST FAILED with result " + result);
}
}
public static int run(String argv[], PrintStream out) {
exitStatus = Consts.TEST_PASSED;
redefineclasses029 thisTest = new redefineclasses029();
ArgumentHandler argHandler = new ArgumentHandler(argv);
log = new Log(out, argHandler);
debugee = Debugee.prepareDebugee(argHandler, log, debugeeName);
try {
thisTest.execTest();
} catch (TestBug e) {
exitStatus = Consts.TEST_FAILED;
e.printStackTrace();
} catch (Exception e) {
exitStatus = Consts.TEST_FAILED;
e.printStackTrace();
} finally {
debugee.resume();
debugee.quit();
}
display("Test finished. exitStatus = " + exitStatus);
return exitStatus;
}
private void execTest() throws TestBug {
if (!debugee.VM().canRedefineClasses()) {
display("\n>>>canRedefineClasses() is false<<< test canceled.\n");
return;
}
testedClass = debugee.classByName(debugeeName);
display(typePrompt(testedClass) + "\t:" + testedClass.name());
display("\nTEST BEGINS");
display("===========");
HashMap<com.sun.jdi.ReferenceType,byte[]> mapBytes = new HashMap<com.sun.jdi.ReferenceType,byte[]>();
display(">attempting to redefine a class by \"empty\" class-file...");
mapBytes.put(testedClass, new byte[0]);
try {
debugee.VM().redefineClasses(mapBytes);
exitStatus = Consts.TEST_FAILED;
complain("***ClassFormatError is not thrown");
} catch (ClassFormatError e) {
display(EXPECTED_STRING + e);
} catch (Exception e) {
exitStatus = Consts.TEST_FAILED;
complain(UNEXPECTED_STRING + e);
e.printStackTrace();
}
debugee.resume();
display("\n=============");
display("TEST FINISHES\n");
}
private String typePrompt(ReferenceType refType) {
String msg = "Tested ";
if (refType instanceof InterfaceType) {
msg += "interface";
} else if (refType instanceof ClassType) {
msg += "class";
} else {
msg += "type";
}
return msg;
}
}
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