jaroslav@201: /**
jaroslav@201:  * Back 2 Browser Bytecode Translator
jaroslav@201:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@201:  *
jaroslav@201:  * This program is free software: you can redistribute it and/or modify
jaroslav@201:  * it under the terms of the GNU General Public License as published by
jaroslav@201:  * the Free Software Foundation, version 2 of the License.
jaroslav@201:  *
jaroslav@201:  * This program is distributed in the hope that it will be useful,
jaroslav@201:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@201:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@201:  * GNU General Public License for more details.
jaroslav@201:  *
jaroslav@201:  * You should have received a copy of the GNU General Public License
jaroslav@201:  * along with this program. Look for COPYING file in the top folder.
jaroslav@201:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@201:  */
jaroslav@201: package org.apidesign.vm4brwsr;
jaroslav@201: 
jaroslav@201: import javax.script.ScriptContext;
jaroslav@201: import javax.script.ScriptEngine;
jaroslav@201: import javax.script.ScriptException;
jaroslav@201: import org.testng.annotations.BeforeClass;
jaroslav@201: import static org.testng.Assert.*;
jaroslav@789: import org.testng.annotations.AfterClass;
jaroslav@201: import org.testng.annotations.Test;
jaroslav@201: 
jaroslav@201: /** Implements loading class by class.
jaroslav@201:  *
jaroslav@201:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@201:  */
jaroslav@201: public class VMLazyTest {
jaroslav@708:     private static TestVM code;
jaroslav@201: 
jaroslav@201:     @BeforeClass
jaroslav@789:     public static void compileTheCode() throws Exception {
jaroslav@201:         StringBuilder sb = new StringBuilder();
jaroslav@277:         sb.append("\nvar data = {};");
jaroslav@277:         sb.append("\nfunction test(clazz, method) {");
jaroslav@277:         sb.append("\n  if (!data.bck2brwsr) data.bck2brwsr = bck2brwsr(function(name) { return loader.get(name); });");
jaroslav@277:         sb.append("\n  var c = data.bck2brwsr.loadClass(clazz);");
jaroslav@201:         sb.append("\n  return c[method]();");
jaroslav@201:         sb.append("\n}");
jaroslav@201:         
jaroslav@507:         sb.append("\nfunction checkKO() {");
jaroslav@507:         sb.append("\n  return ko !== null;");
jaroslav@507:         sb.append("\n}");
jaroslav@277:        
jaroslav@201:         ScriptEngine[] arr = { null };
jaroslav@708:         code = TestVM.compileClass(sb, arr,
Martin@594:             new String[]{"org/apidesign/vm4brwsr/VM", "org/apidesign/vm4brwsr/StaticMethod"}
jaroslav@201:         );
jaroslav@298:         arr[0].getContext().setAttribute("loader", new BytesLoader(), ScriptContext.ENGINE_SCOPE);
jaroslav@201:     }
jaroslav@789:     @AfterClass
jaroslav@789:     public static void releaseTheCode() {
jaroslav@789:         code = null;
jaroslav@789:     }
jaroslav@201:     
jaroslav@201:     @Test public void invokeStaticMethod() throws Exception {
jaroslav@201:         assertExec("Trying to get -1", "test", Double.valueOf(-1),
jaroslav@277:             StaticMethod.class.getName(), "minusOne__I"
jaroslav@201:         );
jaroslav@201:     }
jaroslav@214: 
jaroslav@214:     @Test public void loadDependantClass() throws Exception {
jaroslav@277:         assertExec("Expecting zero", "test", Double.valueOf(0),
jaroslav@277:             InstanceSub.class.getName(), "recallDbl__D"
jaroslav@214:         );
jaroslav@214:     }
jaroslav@201: 
jaroslav@503:     @Test public void loadClassWithAssociatedScript() throws Exception {
jaroslav@503:         assertExec("ko is defined", "test", true,
jaroslav@503:             Script.class.getName(), "checkNotNull__Z"
jaroslav@503:         );
jaroslav@507:         
jaroslav@507:         Object res = code.invokeFunction("checkKO");
jaroslav@507:         assertEquals(res, true, "KO is defined on a global level");
jaroslav@503:     }
jaroslav@503: 
jaroslav@201:     private static void assertExec(String msg, String methodName, Object expRes, Object... args) throws Exception {
jaroslav@201:         Object ret = null;
jaroslav@201:         try {
jaroslav@201:             ret = code.invokeFunction(methodName, args);
jaroslav@201:         } catch (ScriptException ex) {
jaroslav@708:             fail("Execution failed in\n" + code.toString(), ex);
jaroslav@201:         } catch (NoSuchMethodException ex) {
jaroslav@708:             fail("Cannot find method in\n" + code.toString(), ex);
jaroslav@201:         }
jaroslav@201:         if (ret == null && expRes == null) {
jaroslav@201:             return;
jaroslav@201:         }
jaroslav@1392:         if (expRes instanceof Double && ret instanceof Number) {
jaroslav@1392:             ret = ((Number)ret).doubleValue();
jaroslav@1392:         }
jaroslav@201:         if (expRes.equals(ret)) {
jaroslav@201:             return;
jaroslav@201:         }
jaroslav@708:         assertEquals(ret, expRes, msg + "was: " + ret + "\n" + code.toString());
jaroslav@201:     }
jaroslav@201: }