package test.javassist.proxy;
import junit.framework.TestCase;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.reflect.Method;
import javassist.util.proxy.MethodFilter;
import javassist.util.proxy.MethodHandler;
import javassist.util.proxy.Proxy;
import javassist.util.proxy.ProxyFactory;
public class ProxySimpleTest extends TestCase {
String testResult;
public void testProxyFactory() throws Exception {
ProxyFactory f = new ProxyFactory();
f.writeDirectory = "./proxy";
f.setSuperclass(Foo.class);
f.setFilter(new MethodFilter() {
public boolean isHandled(Method m) {
return m.getName().startsWith("f");
}
});
Class c = f.createClass();
MethodHandler mi = new MethodHandler() {
public Object invoke(Object self, Method m, Method proceed,
Object[] args) throws Throwable {
testResult += args[0].toString();
return proceed.invoke(self, args); // execute the original method.
}
};
Foo foo = (Foo)c.newInstance();
((Proxy)foo).setHandler(mi);
testResult = "";
foo.foo(1);
foo.foo2(2);
foo.bar(3);
assertEquals("12", testResult);
}
public static class Foo {
public int foo(int i) { return i + 1; }
public int foo2(int i) { return i + 2; }
public int bar(int i) { return i + 1; }
}
public void testReadWrite() throws Exception {
final String fileName = "read-write.bin";
ProxyFactory.ClassLoaderProvider cp = ProxyFactory.classLoaderProvider;
ProxyFactory.classLoaderProvider = new ProxyFactory.ClassLoaderProvider() {
public ClassLoader get(ProxyFactory pf) {
return new javassist.Loader();
}
};
ProxyFactory pf = new ProxyFactory();
pf.setSuperclass(ReadWriteData.class);
Object data = pf.createClass().newInstance();
// Object data = new ReadWriteData();
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(fileName));
oos.writeObject(data);
oos.close();
ProxyFactory.classLoaderProvider = cp;
ObjectInputStream ois = new ObjectInputStream(new FileInputStream(fileName));
Object data2 = ois.readObject();
ois.close();
int i = ((ReadWriteData)data2).foo();
assertEquals(4, i);
}
public static class ReadWriteData implements Serializable {
public int foo() { return 4; }
}
public void testWriteReplace() throws Exception {
ProxyFactory pf = new ProxyFactory();
pf.setSuperclass(WriteReplace.class);
Object data = pf.createClass().newInstance();
assertEquals(data, ((WriteReplace)data).writeReplace());
ProxyFactory pf2 = new ProxyFactory();
pf2.setSuperclass(WriteReplace2.class);
Object data2 = pf2.createClass().newInstance();
Method meth = data2.getClass().getDeclaredMethod("writeReplace", new Class[0]);
assertEquals("javassist.util.proxy.SerializedProxy",
meth.invoke(data2, new Object[0]).getClass().getName());
}
public static class WriteReplace implements Serializable {
public Object writeReplace() { return this; }
}
public static class WriteReplace2 implements Serializable {
public Object writeReplace(int i) { return new Integer(i); }
}
}