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// Tags: JDK1.1
// Copyright (C) 2005 Free Software Foundation, Inc.
// Written by Jeroen Frijters <jeroen@frijters.net>
// This file is part of Mauve.
// Mauve is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// Mauve 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 for more details.
// You should have received a copy of the GNU General Public License
// along with Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA. */
package gnu.testlet.java.lang.ClassLoader;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
public class findLoadedClass extends ClassLoader implements Testlet
{
// This represents the class:
// class Triv extends java.util.Hashtable {}
private static byte[] trivialClassDef = {
(byte)0xCA, (byte)0xFE, (byte)0xBA, (byte)0xBE, (byte)0x00, (byte)0x03,
(byte)0x00, (byte)0x2D, (byte)0x00, (byte)0x0F, (byte)0x07, (byte)0x00,
(byte)0x0C, (byte)0x07, (byte)0x00, (byte)0x0E, (byte)0x0A, (byte)0x00,
(byte)0x02, (byte)0x00, (byte)0x04, (byte)0x0C, (byte)0x00, (byte)0x06,
(byte)0x00, (byte)0x05, (byte)0x01, (byte)0x00, (byte)0x03, (byte)0x28,
(byte)0x29, (byte)0x56, (byte)0x01, (byte)0x00, (byte)0x06, (byte)0x3C,
(byte)0x69, (byte)0x6E, (byte)0x69, (byte)0x74, (byte)0x3E, (byte)0x01,
(byte)0x00, (byte)0x04, (byte)0x43, (byte)0x6F, (byte)0x64, (byte)0x65,
(byte)0x01, (byte)0x00, (byte)0x0D, (byte)0x43, (byte)0x6F, (byte)0x6E,
(byte)0x73, (byte)0x74, (byte)0x61, (byte)0x6E, (byte)0x74, (byte)0x56,
(byte)0x61, (byte)0x6C, (byte)0x75, (byte)0x65, (byte)0x01, (byte)0x00,
(byte)0x0A, (byte)0x45, (byte)0x78, (byte)0x63, (byte)0x65, (byte)0x70,
(byte)0x74, (byte)0x69, (byte)0x6F, (byte)0x6E, (byte)0x73, (byte)0x01,
(byte)0x00, (byte)0x0E, (byte)0x4C, (byte)0x6F, (byte)0x63, (byte)0x61,
(byte)0x6C, (byte)0x56, (byte)0x61, (byte)0x72, (byte)0x69, (byte)0x61,
(byte)0x62, (byte)0x6C, (byte)0x65, (byte)0x73, (byte)0x01, (byte)0x00,
(byte)0x0A, (byte)0x53, (byte)0x6F, (byte)0x75, (byte)0x72, (byte)0x63,
(byte)0x65, (byte)0x46, (byte)0x69, (byte)0x6C, (byte)0x65, (byte)0x01,
(byte)0x00, (byte)0x04, (byte)0x54, (byte)0x72, (byte)0x69, (byte)0x76,
(byte)0x01, (byte)0x00, (byte)0x09, (byte)0x54, (byte)0x72, (byte)0x69,
(byte)0x76, (byte)0x2E, (byte)0x6A, (byte)0x61, (byte)0x76, (byte)0x61,
(byte)0x01, (byte)0x00, (byte)0x13, (byte)0x6A, (byte)0x61, (byte)0x76,
(byte)0x61, (byte)0x2F, (byte)0x75, (byte)0x74, (byte)0x69, (byte)0x6C,
(byte)0x2F, (byte)0x48, (byte)0x61, (byte)0x73, (byte)0x68, (byte)0x74,
(byte)0x61, (byte)0x62, (byte)0x6C, (byte)0x65, (byte)0x00, (byte)0x00,
(byte)0x00, (byte)0x01, (byte)0x00, (byte)0x02, (byte)0x00, (byte)0x00,
(byte)0x00, (byte)0x00, (byte)0x00, (byte)0x01, (byte)0x00, (byte)0x00,
(byte)0x00, (byte)0x06, (byte)0x00, (byte)0x05, (byte)0x00, (byte)0x01,
(byte)0x00, (byte)0x07, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x11,
(byte)0x00, (byte)0x01, (byte)0x00, (byte)0x01, (byte)0x00, (byte)0x00,
(byte)0x00, (byte)0x05, (byte)0x2A, (byte)0xB7, (byte)0x00, (byte)0x03,
(byte)0xB1, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00,
(byte)0x01, (byte)0x00, (byte)0x0B, (byte)0x00, (byte)0x00, (byte)0x00,
(byte)0x02, (byte)0x00, (byte)0x0D
};
private boolean broken;
public findLoadedClass()
{
}
protected synchronized Class loadClass(String name, boolean resolve)
throws ClassNotFoundException
{
if (broken)
throw new ClassNotFoundException();
else
return super.loadClass(name, resolve);
}
private findLoadedClass(ClassLoader parent)
{
super(parent);
}
public void test(TestHarness harness)
{
defineClass("Triv", trivialClassDef, 0, trivialClassDef.length);
// defineClass should have registered the class
harness.checkPoint("defineClass should register");
checkLoaded(harness, this, "Triv");
// make sure that the VM registers the initiating class loader
harness.checkPoint("VM should register");
checkLoaded(harness, this, "java.util.Hashtable");
// types that weren't loaded shouldn't be visible
harness.checkPoint("premature");
harness.check(findLoadedClass("java.lang.Object") == null);
// Class.forName() should register the initiating loader.
harness.checkPoint("Class.forName");
try
{
Class.forName("java.lang.Object", false, this);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
}
checkLoaded(harness, this, "java.lang.Object");
// The above should also apply to arrays
// Note that on Sun JDK 1.4 (not on 1.5), loading the component type
// also make the array type visible, so we don't test that the array
// is not visible at this point.
try
{
Class.forName("[Ljava.lang.Object;", false, this);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
}
checkLoaded(harness, this, "[Ljava.lang.Object;");
// Loading an array type, makes available the ultimate component type
harness.checkPoint("array implies component type");
harness.check(findLoadedClass("java.util.Vector") == null);
try
{
Class.forName("[[Ljava.util.Vector;", false, this);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
}
checkLoaded(harness, this, "java.util.Vector");
// After loading a class thru a parent, we shouldn't be able to define it.
harness.checkPoint("no redefine");
findLoadedClass cl = new findLoadedClass(this);
harness.check(cl.findLoadedClass("Triv") == null);
try
{
Class.forName("Triv", false, cl);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
throw new Error(x);
}
checkLoaded(harness, cl, "Triv");
try
{
cl.defineClass("Triv", trivialClassDef, 0, trivialClassDef.length);
harness.check(false);
}
catch(LinkageError _)
{
harness.check(true);
}
// Check multi level trickery
harness.checkPoint("multi level");
findLoadedClass grandParent = new findLoadedClass();
grandParent.defineClass("Triv", trivialClassDef, 0, trivialClassDef.length);
findLoadedClass parent = new findLoadedClass(grandParent);
findLoadedClass child = new findLoadedClass(parent);
try
{
Class.forName("Triv", false, child);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
throw new Error(x);
}
try
{
parent.defineClass("Triv", trivialClassDef, 0, trivialClassDef.length);
harness.check(true);
}
catch(LinkageError x)
{
harness.debug(x);
harness.check(false);
}
try
{
Class c = Class.forName("Triv", false, child);
harness.check(c.getClassLoader() == grandParent);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
harness.check(false);
}
catch(LinkageError x)
{
harness.debug(x);
harness.check(false);
}
// Even if a class loader is broken, Class.forName() should continue
// to work.
child.broken = true;
try
{
Class c = Class.forName("Triv", false, child);
harness.check(c.getClassLoader() == grandParent);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
harness.check(false);
}
catch(LinkageError x)
{
harness.debug(x);
harness.check(false);
}
// The VM should also look in the loaded classes cache, before calling loadClass()
harness.checkPoint("VM consults cache");
findLoadedClass newLoader = new findLoadedClass();
try
{
Class.forName("java.util.Hashtable", false, newLoader);
}
catch(ClassNotFoundException x)
{
harness.debug(x);
throw new Error(x);
}
newLoader.broken = true;
newLoader.defineClass("Triv", trivialClassDef, 0, trivialClassDef.length);
}
private void checkLoaded(TestHarness harness, findLoadedClass cl, String name)
{
Class c = cl.findLoadedClass(name);
harness.check(c != null && c.getName().equals(name));
}
}
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