jaroslav@0: /*
jaroslav@0: Java 4 Browser Bytecode Translator
jaroslav@0: Copyright (C) 2012-2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@0: 
jaroslav@0: This program is free software: you can redistribute it and/or modify
jaroslav@0: it under the terms of the GNU General Public License as published by
jaroslav@0: the Free Software Foundation, version 2 of the License.
jaroslav@0: 
jaroslav@0: This program is distributed in the hope that it will be useful,
jaroslav@0: but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@0: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@0: GNU General Public License for more details.
jaroslav@0: 
jaroslav@0: You should have received a copy of the GNU General Public License
jaroslav@0: along with this program. Look for COPYING file in the top folder.
jaroslav@0: If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@0: */
jaroslav@0: package org.apidesign.java4browser;
jaroslav@0: 
jaroslav@0: import java.io.IOException;
jaroslav@0: import java.io.InputStream;
jaroslav@0: import javax.script.Invocable;
jaroslav@0: import javax.script.ScriptEngine;
jaroslav@0: import javax.script.ScriptEngineManager;
jaroslav@0: import javax.script.ScriptException;
jaroslav@0: import static org.testng.Assert.*;
jaroslav@0: import org.testng.annotations.Test;
jaroslav@0: 
jaroslav@0: /** Checks the basic behavior of the translator.
jaroslav@0:  *
jaroslav@0:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@0:  */
jaroslav@0: public class StaticMethodTest {
jaroslav@0:     @Test public void threePlusFour() throws Exception {
jaroslav@2:         assertExec(
jaroslav@2:             "Should be seven", 
jaroslav@2:             "org_apidesign_java4browser_StaticMethod_sumIII", 
jaroslav@2:             Double.valueOf(7), 
jaroslav@2:             3, 4
jaroslav@2:         );
jaroslav@0:     }
jaroslav@0: 
jaroslav@1:     @Test public void powerOfThree() throws Exception {
jaroslav@2:         assertExec(
jaroslav@2:             "Should be nine", 
jaroslav@2:             "org_apidesign_java4browser_StaticMethod_powerFF", 
jaroslav@2:             Double.valueOf(9),
jaroslav@2:             3.0f
jaroslav@2:         );
jaroslav@1:     }
jaroslav@1: 
jaroslav@2:     @Test public void doubleWithoutLong() throws Exception {
jaroslav@2:         assertExec(
jaroslav@2:             "Should be two",
jaroslav@2:             "org_apidesign_java4browser_StaticMethod_minusDDJ", 
jaroslav@2:             Double.valueOf(2),
jaroslav@2:             3.0d, 1l
jaroslav@2:         );
jaroslav@2:     }
jaroslav@2:     
jaroslav@2:     private static void assertExec(String msg, String methodName, Object expRes, Object... args) throws Exception {
jaroslav@2:         StringBuilder sb = new StringBuilder();
jaroslav@2:         Invocable i = compileClass("StaticMethod.class", sb);
jaroslav@2:         
jaroslav@2:         Object ret = null;
jaroslav@2:         try {
jaroslav@2:             ret = i.invokeFunction(methodName, args);
jaroslav@2:         } catch (NoSuchMethodException ex) {
jaroslav@2:             fail("Cannot find method in " + sb, ex);
jaroslav@2:         }
jaroslav@2:         if (ret == null && expRes == null) {
jaroslav@2:             return;
jaroslav@2:         }
jaroslav@2:         if (expRes.equals(ret)) {
jaroslav@2:             return;
jaroslav@2:         }
jaroslav@2:         assertEquals(ret, expRes, msg + "\n" + sb);
jaroslav@2:         
jaroslav@2:     }
jaroslav@2: 
jaroslav@2:     static Invocable compileClass(String name, StringBuilder sb) throws ScriptException, IOException {
jaroslav@0:         InputStream is = StaticMethodTest.class.getResourceAsStream(name);
jaroslav@0:         assertNotNull(is, "Class file found");
jaroslav@2:         if (sb == null) {
jaroslav@2:             sb = new StringBuilder();
jaroslav@2:         }
jaroslav@0:         ByteCodeToJavaScript.compile(name, is, sb);
jaroslav@0:         ScriptEngineManager sem = new ScriptEngineManager();
jaroslav@0:         ScriptEngine js = sem.getEngineByExtension("js");
jaroslav@0:         try {
jaroslav@0:             Object res = js.eval(sb.toString());
jaroslav@0:             assertTrue(js instanceof Invocable, "It is invocable object: " + res);
jaroslav@0:             return (Invocable)js;
jaroslav@0:         } catch (ScriptException ex) {
jaroslav@0:             fail("Could not compile:\n" + sb, ex);
jaroslav@0:             return null;
jaroslav@0:         }
jaroslav@0:     }
jaroslav@0: }