/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, version 2 of the License.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. Look for COPYING file in the top folder.

  * If not, see http://opensource.org/licenses/GPL-2.0.

  */

 package org.apidesign.vm4brwsr;

 import javax.script.Invocable;

 import javax.script.ScriptException;

 import static org.testng.Assert.*;

 import org.testng.annotations.BeforeClass;

 import org.testng.annotations.Test;

 /**

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 public class NumberTest {

     @Test public void integerFromString() throws Exception {

         assertExec("Can convert string to integer", "java_lang_Integer_parseIntILjava_lang_String",

             Double.valueOf(333), "333"

         );

     }

     @Test public void doubleFromString() throws Exception {

         assertExec("Can convert string to double", "java_lang_Double_parseDoubleDLjava_lang_String",

             Double.valueOf(33.3), "33.3"

         );

     }

     @Test public void autoboxDouble() throws Exception {

         assertExec("Autoboxing of doubles is OK", "org_apidesign_vm4brwsr_Numbers_autoboxDblToStringLjava_lang_String",

             "3.3"

         );

     }

     @Test public void javalog1000() throws Exception {

         assertEquals(3.0, Math.log10(1000.0), 0.00003, "log_10(1000) == 3");

     }

     @Test public void jslog1000() throws Exception {

         assertExec("log_10(1000) == 3", "java_lang_Math_log10DD", 

             Double.valueOf(3.0), 1000.0

         );

     }

     private static CharSequence codeSeq;

     private static Invocable code;

     @BeforeClass

     public void compileTheCode() throws Exception {

         if (codeSeq == null) {

             StringBuilder sb = new StringBuilder();

             code = StaticMethodTest.compileClass(sb, "org/apidesign/vm4brwsr/Numbers");

             codeSeq = sb;

         }

     }

     private static void assertExec(

         String msg, String methodName, Object expRes, Object... args) throws Exception {

         Object ret = null;

         try {

             ret = code.invokeFunction(methodName, args);

         } catch (ScriptException ex) {

             fail("Execution failed in\n" + codeSeq, ex);

         } catch (NoSuchMethodException ex) {

             fail("Cannot find method in\n" + codeSeq, ex);

         }

         if (ret == null && expRes == null) {

             return;

         }

         if (expRes.equals(ret)) {

             return;

         }

         if (expRes instanceof Double && ret instanceof Double) {

             double expD = ((Double)expRes).doubleValue();

             double retD = ((Double)ret).doubleValue();

             assertEquals(retD, expD, 0.000004, msg + " was " + ret + "\n" + codeSeq);

             return;

         }

         assertEquals(ret, expRes, msg + "was: " + ret + "\n" + codeSeq);

     }

 }