jaroslav@1170: /**
jaroslav@1170:  * Back 2 Browser Bytecode Translator
jaroslav@1170:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@1170:  *
jaroslav@1170:  * This program is free software: you can redistribute it and/or modify
jaroslav@1170:  * it under the terms of the GNU General Public License as published by
jaroslav@1170:  * the Free Software Foundation, version 2 of the License.
jaroslav@1170:  *
jaroslav@1170:  * This program is distributed in the hope that it will be useful,
jaroslav@1170:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@1170:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@1170:  * GNU General Public License for more details.
jaroslav@1170:  *
jaroslav@1170:  * You should have received a copy of the GNU General Public License
jaroslav@1170:  * along with this program. Look for COPYING file in the top folder.
jaroslav@1170:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@1170:  */
jaroslav@1170: package org.apidesign.bck2brwsr.launcher.fximpl;
jaroslav@1170: 
jaroslav@1170: import java.lang.reflect.InvocationTargetException;
jaroslav@1170: import java.lang.reflect.Method;
jaroslav@1170: import java.net.URL;
jaroslav@1170: import javax.script.Invocable;
jaroslav@1170: import javax.script.ScriptEngine;
jaroslav@1170: import javax.script.ScriptEngineManager;
jaroslav@1170: import javax.script.ScriptException;
jaroslav@1170: import static org.testng.Assert.*;
jaroslav@1170: import org.testng.annotations.BeforeClass;
jaroslav@1170: import org.testng.annotations.Test;
jaroslav@1170: 
jaroslav@1170: /**
jaroslav@1170:  *
jaroslav@1170:  * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@1170:  */
jaroslav@1170: public class JsClassLoaderTest {
jaroslav@1170:     private static ClassLoader loader;
jaroslav@1170:     private static Class<?> methodClass;
jaroslav@1170:     
jaroslav@1170:     public JsClassLoaderTest() {
jaroslav@1170:     }
jaroslav@1170: 
jaroslav@1170:     @BeforeClass
jaroslav@1170:     public static void setUpClass() throws Exception {
jaroslav@1170:         ScriptEngineManager sem = new ScriptEngineManager();
jaroslav@1170:         final ScriptEngine eng = sem.getEngineByMimeType("text/javascript");
jaroslav@1170:         
jaroslav@1170:         URL my = JsClassLoaderTest.class.getProtectionDomain().getCodeSource().getLocation();
jaroslav@1170:         ClassLoader parent = JsClassLoaderTest.class.getClassLoader().getParent();
jaroslav@1170:         loader = new JsClassLoader(new URL[] { my }, parent) {
jaroslav@1170:             @Override
jaroslav@1170:             protected JsClassLoader.Fn defineFn(String code, String... names) {
jaroslav@1170:                 StringBuilder sb = new StringBuilder();
jaroslav@1170:                 sb.append("(function() {");
jaroslav@1170:                 sb.append("var r = {};");
jaroslav@1170:                 sb.append("r.fn = function(");
jaroslav@1170:                 String sep = "";
jaroslav@1170:                 for (String n : names) {
jaroslav@1170:                     sb.append(sep);
jaroslav@1170:                     sb.append(n);
jaroslav@1170:                     sep = ", ";
jaroslav@1170:                 }
jaroslav@1170:                 sb.append(") {");
jaroslav@1170:                 sb.append(code);
jaroslav@1170:                 sb.append("};");
jaroslav@1170:                 sb.append("return r;");
jaroslav@1170:                 sb.append("})()");
jaroslav@1170:                 try {
jaroslav@1170:                     final Object val = eng.eval(sb.toString());
jaroslav@1170:                     return new JsClassLoader.Fn() {
jaroslav@1170:                         @Override
jaroslav@1170:                         public Object invoke(Object... args) throws Exception {
jaroslav@1170:                             Invocable inv = (Invocable)eng;
jaroslav@1170:                             return inv.invokeMethod(val, "fn", args);
jaroslav@1170:                         }
jaroslav@1170:                     };
jaroslav@1170:                 } catch (ScriptException ex) {
jaroslav@1170:                     throw new LinkageError("Can't parse: " + sb, ex);
jaroslav@1170:                 }
jaroslav@1170:             }
jaroslav@1170:         };
jaroslav@1170:         
jaroslav@1170:         methodClass = loader.loadClass(JsMethods.class.getName());
jaroslav@1170:     }
jaroslav@1170:     
jaroslav@1170:     @Test public void noParamMethod() throws Throwable {
jaroslav@1170:         Method plus = methodClass.getMethod("fortyTwo");
jaroslav@1170:         try {
jaroslav@1170:             final Object val = plus.invoke(null);
jaroslav@1170:             assertTrue(val instanceof Number, "A number returned " + val);
jaroslav@1170:             assertEquals(((Number)val).intValue(), 42);
jaroslav@1170:         } catch (InvocationTargetException ex) {
jaroslav@1170:             throw ex.getTargetException();
jaroslav@1170:         }
jaroslav@1170:     }
jaroslav@1170:     /*
jaroslav@1170:     @Test public void testExecuteScript() throws Throwable {
jaroslav@1170:         Method plus = methodClass.getMethod("plus", int.class, int.class);
jaroslav@1170:         try {
jaroslav@1170:             assertEquals(plus.invoke(null, 10, 20), 30);
jaroslav@1170:         } catch (InvocationTargetException ex) {
jaroslav@1170:             throw ex.getTargetException();
jaroslav@1170:         }
jaroslav@1170:     }
jaroslav@1170:     */
jaroslav@1170: 
jaroslav@1170: }