jaroslav@1453: /**
jaroslav@1453:  * Back 2 Browser Bytecode Translator
jaroslav@1453:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@1453:  *
jaroslav@1453:  * This program is free software: you can redistribute it and/or modify
jaroslav@1453:  * it under the terms of the GNU General Public License as published by
jaroslav@1453:  * the Free Software Foundation, version 2 of the License.
jaroslav@1453:  *
jaroslav@1453:  * This program is distributed in the hope that it will be useful,
jaroslav@1453:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@1453:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@1453:  * GNU General Public License for more details.
jaroslav@1453:  *
jaroslav@1453:  * You should have received a copy of the GNU General Public License
jaroslav@1453:  * along with this program. Look for COPYING file in the top folder.
jaroslav@1453:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@1453:  */
jaroslav@1453: /*
jaroslav@1453:  * To change this license header, choose License Headers in Project Properties.
jaroslav@1453:  * To change this template file, choose Tools | Templates
jaroslav@1453:  * and open the template in the editor.
jaroslav@1453:  */
jaroslav@1453: 
jaroslav@1453: package org.apidesign.vm4brwsr;
jaroslav@1453: 
jaroslav@1457: import java.io.IOException;
jaroslav@1457: import java.io.InputStream;
jaroslav@1544: import static org.testng.Assert.*;
jaroslav@1453: import org.testng.annotations.AfterClass;
jaroslav@1453: import org.testng.annotations.BeforeClass;
jaroslav@1453: import org.testng.annotations.Test;
jaroslav@1453: 
jaroslav@1453: /**
jaroslav@1453:  *
jaroslav@1453:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@1453:  */
jaroslav@1453: public class SizeOfAMethodTest {
jaroslav@1457:     private static String code;
jaroslav@1453: 
jaroslav@1453:     @Test public void sumXYShouldBeSmall() {
jaroslav@1457:         String s = code;
jaroslav@1453:         int beg = s.indexOf("c.sum__III");
jaroslav@1704:         int end = s.indexOf(".access", beg);
jaroslav@1453:         
jaroslav@1457:         assertTrue(beg > 0, "Found sum method in " + code);
jaroslav@1457:         assertTrue(beg < end, "Found end of sum method in " + code);
jaroslav@1453:         
jaroslav@1453:         String method = s.substring(beg, end);
jaroslav@1453:         
jaroslav@1457:         
jaroslav@1457:         assertEquals(method.indexOf("st"), -1, "There should be no stack operations:\n" + method);
jaroslav@1457:     }
jaroslav@1457: 
jaroslav@1544:     @Test public void betterConstructor() {
jaroslav@1544:         String s = code;
jaroslav@1544:         int beg = s.indexOf("c.initInflater__IIZ");
jaroslav@1704:         int end = s.indexOf(".access", beg);
jaroslav@1544:         
jaroslav@1544:         assertTrue(beg > 0, "Found initInflater method in " + code);
jaroslav@1544:         assertTrue(beg < end, "Found end of initInflater method in " + code);
jaroslav@1544:         
jaroslav@1544:         String method = s.substring(beg, end);
jaroslav@1544:         
jaroslav@1544:         assertEquals(method.indexOf("stA1"), -1, "No need for stA1 register:\n" + method);
jaroslav@1544:     }
jaroslav@1544: 
jaroslav@1545:     @Test public void deepConstructor() {
jaroslav@1545:         String s = code;
jaroslav@1545:         int beg = s.indexOf("c.intHolder__I");
jaroslav@1704:         int end = s.indexOf(".access", beg);
jaroslav@1545:         
jaroslav@1545:         assertTrue(beg > 0, "Found intHolder method in " + code);
jaroslav@1545:         assertTrue(beg < end, "Found end of intHolder method in " + code);
jaroslav@1545:         
jaroslav@1545:         String method = s.substring(beg, end);
jaroslav@1545:         
jaroslav@1545:         assertEquals(method.indexOf("stA3"), -1, "No need for stA3 register on second constructor:\n" + method);
jaroslav@1545:     }
jaroslav@1545: 
jaroslav@1457:     @Test public void emptyConstructorRequiresNoStack() {
jaroslav@1457:         String s = code;
jaroslav@1457:         int beg = s.indexOf("CLS.cons__V");
jaroslav@1704:         int end = s.indexOf(".access", beg);
jaroslav@1457:         
jaroslav@1457:         assertTrue(beg > 0, "Found constructor in " + code);
jaroslav@1457:         assertTrue(beg < end, "Found end of constructor in " + code);
jaroslav@1457:         
jaroslav@1457:         String method = s.substring(beg, end);
jaroslav@1457:         method = method.replace("constructor", "CNSTR");
jaroslav@1457:         
jaroslav@1453:         assertEquals(method.indexOf("st"), -1, "There should be no stack operations:\n" + method);
jaroslav@1469:         assertEquals(method.indexOf("for"), -1, "There should be no for blocks:\n" + method);
jaroslav@1453:     }
jaroslav@1453:     
jaroslav@1472:     @Test public void dontGeneratePrimitiveFinalConstants() {
jaroslav@1472:         assertEquals(code.indexOf("MISSING_CONSTANT"), -1, "MISSING_CONSTANT field should not be generated");
jaroslav@1472:     }
jaroslav@1453:     
jaroslav@1453:     @BeforeClass 
jaroslav@1453:     public static void compileTheCode() throws Exception {
jaroslav@1457:         final String res = "org/apidesign/vm4brwsr/StaticMethod";
jaroslav@1453:         StringBuilder sb = new StringBuilder();
jaroslav@1457:         class JustStaticMethod implements Bck2Brwsr.Resources {
jaroslav@1457:             @Override
jaroslav@1457:             public InputStream get(String resource) throws IOException {
jaroslav@1457:                 final String cn = res + ".class";
jaroslav@1457:                 if (resource.equals(cn)) {
jaroslav@1457:                     return getClass().getClassLoader().getResourceAsStream(cn);
jaroslav@1457:                 }
jaroslav@1457:                 return null;
jaroslav@1457:             }
jaroslav@1457:         }
jaroslav@1457:         Bck2Brwsr.generate(sb, new JustStaticMethod(), res);
jaroslav@1457:         code = sb.toString();
jaroslav@1453:     }
jaroslav@1453:     @AfterClass
jaroslav@1453:     public static void releaseTheCode() {
jaroslav@1453:         code = null;
jaroslav@1453:     }
jaroslav@1453:     
jaroslav@1453: }