jtulach@169: /**
jtulach@169:  * Back 2 Browser Bytecode Translator
jtulach@169:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jtulach@169:  *
jtulach@169:  * This program is free software: you can redistribute it and/or modify
jtulach@169:  * it under the terms of the GNU General Public License as published by
jtulach@169:  * the Free Software Foundation, version 2 of the License.
jtulach@169:  *
jtulach@169:  * This program is distributed in the hope that it will be useful,
jtulach@169:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jtulach@169:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jtulach@169:  * GNU General Public License for more details.
jtulach@169:  *
jtulach@169:  * You should have received a copy of the GNU General Public License
jtulach@169:  * along with this program. Look for COPYING file in the top folder.
jtulach@169:  * If not, see http://opensource.org/licenses/GPL-2.0.
jtulach@169:  */
jtulach@169: package org.apidesign.vm4brwsr;
jtulach@169: 
jaroslav@170: import java.io.File;
jaroslav@170: import java.io.FileWriter;
jaroslav@170: import java.io.IOException;
jaroslav@170: import java.io.InputStream;
jtulach@169: import static org.testng.Assert.*;
jtulach@169: import javax.script.Invocable;
jtulach@169: import org.testng.annotations.BeforeClass;
jtulach@169: import org.testng.annotations.Test;
jtulach@169: 
jtulach@169: /**
jtulach@169:  *
jtulach@169:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jtulach@169:  */
jtulach@169: public class VMinVMTest {
jtulach@169: 
jtulach@169:     private static CharSequence codeSeq;
jtulach@169:     private static Invocable code;
jtulach@169:     
jaroslav@302:     @Test public void compareGeneratedCodeForArrayClass() throws Exception {
jaroslav@302:         compareCode("/org/apidesign/vm4brwsr/Array.class");
jaroslav@302:     }
jaroslav@302:     
jaroslav@302:     @BeforeClass
jaroslav@302:     public void compileTheCode() throws Exception {
jaroslav@302:         StringBuilder sb = new StringBuilder();
jaroslav@302:         code = StaticMethodTest.compileClass(sb, 
jaroslav@302:             "org/apidesign/vm4brwsr/VMinVM"
jaroslav@302:         );
jaroslav@302:         codeSeq = sb;
jaroslav@302:     }
jaroslav@302:     
jaroslav@302:     private static byte[] readClass(String res) throws IOException {
jaroslav@302:         InputStream is1 = VMinVMTest.class.getResourceAsStream(res);
jaroslav@302:         assertNotNull(is1, "Stream found");
jaroslav@302:         byte[] arr = new byte[is1.available()];
jaroslav@302:         int len = is1.read(arr);
jaroslav@302:         is1.close();
jaroslav@302:         if (len != arr.length) {
jaroslav@302:             throw new IOException("Wrong len " + len + " for arr: " + arr.length);
jaroslav@302:         }
jaroslav@302:         return arr;
jaroslav@302:     }
jaroslav@302: 
jaroslav@302:     private void compareCode(final String nm) throws Exception, IOException {
jaroslav@302:         byte[] arr = readClass(nm);
jaroslav@170:         String ret1 = VMinVM.toJavaScript(arr);
jtulach@169:         
jaroslav@170:         Object ret;
jaroslav@170:         try {
jaroslav@279:             ret = code.invokeFunction("bck2brwsr");
jaroslav@279:             ret = code.invokeMethod(ret, "loadClass", VMinVM.class.getName());
jaroslav@248:             ret = code.invokeMethod(ret, "toJavaScript__Ljava_lang_String_2_3B", arr);
jaroslav@170:         } catch (Exception ex) {
jaroslav@170:             File f = File.createTempFile("execution", ".js");
jaroslav@170:             FileWriter w = new FileWriter(f);
jaroslav@173:             w.append("var byteCode = [\n  ");
jaroslav@173:             String sep = "";
jaroslav@173:             for (int i = 0; i < arr.length; i++) {
jaroslav@173:                 w.append(sep).append(Integer.toString((arr[i] + 256) % 256));
jaroslav@173:                 sep = ", ";
jaroslav@173:                 if (i % 20 == 0) {
jaroslav@173:                     w.append("\n  ");
jaroslav@173:                 }
jaroslav@173:             }
jaroslav@173:             w.append("\n];\n");
jaroslav@170:             w.append(codeSeq);
jaroslav@170:             w.close();
jaroslav@170:             throw new Exception(ex.getMessage() + " file: " + f, ex);
jaroslav@170:         }
jaroslav@170: 
jaroslav@170:         
jtulach@169:         assertTrue(ret instanceof String, "It is string: " + ret);
jtulach@169:         
jaroslav@302:         if (!ret1.toString().equals(ret)) {
jaroslav@302:             StringBuilder msg = StaticMethodTest.dumpJS(ret1);
jaroslav@302:             msg.append(" is not the same as ");
jaroslav@302:             msg.append(StaticMethodTest.dumpJS((CharSequence) ret));
jaroslav@302:             fail(msg.toString());
jaroslav@170:         }
jaroslav@170:     }
jtulach@169: }