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@1227: import java.io.Reader;
jaroslav@1170: import java.lang.reflect.InvocationTargetException;
jaroslav@1170: import java.lang.reflect.Method;
jaroslav@1170: import java.net.URL;
jaroslav@1174: import java.net.URLClassLoader;
jaroslav@1182: import java.util.ArrayList;
jaroslav@1182: import java.util.Arrays;
jaroslav@1184: import java.util.Collection;
jaroslav@1182: import java.util.List;
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@1184: import org.apidesign.html.boot.spi.Fn;
jaroslav@1184: import org.apidesign.html.boot.impl.FindResources;
jaroslav@1184: import org.apidesign.html.boot.impl.FnUtils;
jaroslav@1170: import static org.testng.Assert.*;
jaroslav@1170: import org.testng.annotations.BeforeClass;
jaroslav@1282: import org.testng.annotations.BeforeMethod;
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@1282:     private static Fn.Presenter presenter;
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@1174:         final URL my = JsClassLoaderTest.class.getProtectionDomain().getCodeSource().getLocation();
jaroslav@1170:         ClassLoader parent = JsClassLoaderTest.class.getClassLoader().getParent();
jaroslav@1174:         final URLClassLoader ul = new URLClassLoader(new URL[] { my }, parent);
jaroslav@1184:         class Fr implements FindResources, Fn.Presenter {
jaroslav@1174:             @Override
jaroslav@1184:             public void findResources(String path, Collection<? super URL> results, boolean oneIsEnough) {
jaroslav@1184:                 URL u = ul.getResource(path);
jaroslav@1184:                 if (u != null) {
jaroslav@1184:                     results.add(u);
jaroslav@1184:                 }
jaroslav@1174:             }
jaroslav@1184: 
jaroslav@1170:             @Override
jaroslav@1184:             public Fn defineFn(String code, String... names) {
jaroslav@1170:                 StringBuilder sb = new StringBuilder();
jaroslav@1170:                 sb.append("(function() {");
jaroslav@1182:                 sb.append("return 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("})()");
jaroslav@1170:                 try {
jaroslav@1170:                     final Object val = eng.eval(sb.toString());
jaroslav@1282:                     return new Fn(this) {
jaroslav@1170:                         @Override
jaroslav@1181:                         public Object invoke(Object thiz, Object... args) throws Exception {
jaroslav@1182:                             List<Object> all = new ArrayList<Object>(args.length + 1);
jaroslav@1182:                             all.add(thiz == null ? val : thiz);
jaroslav@1182:                             all.addAll(Arrays.asList(args));
jaroslav@1170:                             Invocable inv = (Invocable)eng;
jaroslav@1182:                             Object ret = inv.invokeMethod(val, "call", all.toArray());
jaroslav@1182:                             return ret == val ? null : ret;
jaroslav@1170:                         }
jaroslav@1170:                     };
jaroslav@1170:                 } catch (ScriptException ex) {
jaroslav@1170:                     throw new LinkageError("Can't parse: " + sb, ex);
jaroslav@1170:                 }
jaroslav@1170:             }
jaroslav@1175: 
jaroslav@1175:             @Override
jaroslav@1184:             public void displayPage(URL page, Runnable onPageLoad) {
jaroslav@1175:                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
jaroslav@1175:             }
jaroslav@1227: 
jaroslav@1227:             @Override
jaroslav@1227:             public void loadScript(Reader code) throws Exception {
jaroslav@1227:                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
jaroslav@1227:             }
jaroslav@1184:         }
jaroslav@1170:         
jaroslav@1282:         Fr fr = new Fr();
jaroslav@1282:         presenter = fr;
jaroslav@1282:         loader = FnUtils.newLoader(fr, fr, parent);
jaroslav@1170:         methodClass = loader.loadClass(JsMethods.class.getName());
jaroslav@1170:     }
jaroslav@1170:     
jaroslav@1282:     @BeforeMethod public void registerPresenter() {
jaroslav@1282:         FnUtils.currentPresenter(presenter);
jaroslav@1282:     }
jaroslav@1282:     
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@1172:     
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@1178: 
jaroslav@1178:     @Test public void overloadedMethod() throws Throwable {
jaroslav@1178:         Method plus = methodClass.getMethod("plus", int.class);
jaroslav@1178:         try {
jaroslav@1178:             assertEquals(plus.invoke(null, 10), 10);
jaroslav@1178:         } catch (InvocationTargetException ex) {
jaroslav@1178:             throw ex.getTargetException();
jaroslav@1178:         }
jaroslav@1178:     }
jaroslav@1181:     
jaroslav@1181:     @Test public void instanceMethod() throws Throwable {
jaroslav@1181:         Method plus = methodClass.getMethod("plusInst", int.class);
jaroslav@1181:         Object inst = methodClass.newInstance();
jaroslav@1181:         try {
jaroslav@1181:             assertEquals(plus.invoke(inst, 10), 10);
jaroslav@1181:         } catch (InvocationTargetException ex) {
jaroslav@1181:             throw ex.getTargetException();
jaroslav@1181:         }
jaroslav@1181:     }
jaroslav@1181:     
jaroslav@1181:     @Test public void staticThis() throws Throwable {
jaroslav@1181:         Method st = methodClass.getMethod("staticThis");
jaroslav@1181:         try {
jaroslav@1181:             assertNull(st.invoke(null));
jaroslav@1181:         } catch (InvocationTargetException ex) {
jaroslav@1181:             throw ex.getTargetException();
jaroslav@1181:         }
jaroslav@1181:     }
jaroslav@1181: 
jaroslav@1181:     @Test public void getThis() throws Throwable {
jaroslav@1181:         Object th = methodClass.newInstance();
jaroslav@1181:         Method st = methodClass.getMethod("getThis");
jaroslav@1181:         try {
jaroslav@1181:             assertEquals(st.invoke(th), th);
jaroslav@1181:         } catch (InvocationTargetException ex) {
jaroslav@1181:             throw ex.getTargetException();
jaroslav@1181:         }
jaroslav@1181:     }
jaroslav@1181:     
jaroslav@1170: }