We use unit test suites to verify the correctness of our virtual machine. Here you can access the source code of the tests.
/*
* Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
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*/
package at.ssw.hotswap.test.body;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
import at.ssw.hotswap.HotSwapTool;
/**
* Tests redefinition of a class such that old code still accesses a redefined private method.
*
* @author Thomas Wuerthinger
*/
public class RedefinePrivateMethodTest {
// Version 0
public static class A {
public int foo() {
int result = bar();
HotSwapTool.toVersion(RedefinePrivateMethodTest.class, 1);
result += bar();
return result;
}
private int bar() {
return 1;
}
}
// Version 1
public static class A___1 {
public int foo() {
return -1;
}
private int bar() {
return 2;
}
}
@Before
public void setUp() throws Exception {
HotSwapTool.toVersion(RedefinePrivateMethodTest.class, 0);
}
@Test
public void testRedefinePrivateMethod() {
assert HotSwapTool.getCurrentVersion(RedefinePrivateMethodTest.class) == 0;
A a = new A();
assertEquals(3, a.foo());
assert HotSwapTool.getCurrentVersion(RedefinePrivateMethodTest.class) == 1;
assertEquals(-1, a.foo());
HotSwapTool.toVersion(RedefinePrivateMethodTest.class, 0);
assertEquals(3, a.foo());
assert HotSwapTool.getCurrentVersion(RedefinePrivateMethodTest.class) == 1;
assertEquals(-1, a.foo());
HotSwapTool.toVersion(RedefinePrivateMethodTest.class, 0);
}
}
