/**

  * 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 java.io.ByteArrayInputStream;

 import java.io.ByteArrayOutputStream;

 import java.io.DataInputStream;

 import java.io.DataOutputStream;

 import java.io.IOException;

 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

         );

     }

     @Test public void javaRem() {

         assertEquals(3, Numbers.rem(303, 10));

     }

     @Test public void jsRem() throws Exception {

         assertExec("Should be three", "org_apidesign_vm4brwsr_Numbers_remIII", 

             Double.valueOf(3.0), 303, 10

         );

     }

     @Test public void deserializeInt() throws Exception {

         int exp = Numbers.deserInt();

         assertExec("Should be the same", "org_apidesign_vm4brwsr_Numbers_deserIntI", 

             Double.valueOf(exp)

         );

     }

     @Test public void deserializeSimpleLong() throws Exception {

         assertExec("Should be 3454", "org_apidesign_vm4brwsr_Numbers_deserLongJAB", 

             Double.valueOf(3454), 

             new byte[] { (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)13, (byte)126 }

         );

     }

     /* XXX: JavaScript cannot represent as big longs as Java. 

     @Test public void deserializeLargeLong() throws Exception {

         final byte[] arr = new byte[] {

             (byte)64, (byte)8, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0, (byte)0

         };

         long exp = Numbers.deserLong(arr);

         assertExec("Should be " + exp, "org_apidesign_vm4brwsr_Numbers_deserLongJAB", 

             Double.valueOf(exp), arr);

     }

     */

     @Test public void deserializeFloatInJava() throws Exception {

         float f = 54324.32423f;

         float r = Numbers.deserFloat();

         assertEquals(r, f, "Floats are the same");

     }

     @Test public void deserializeFloatInJS() throws Exception {

         float f = 54324.32423f;

         assertExec("Should be the same", "org_apidesign_vm4brwsr_Numbers_deserFloatF", 

             Double.valueOf(f)

         );

     }

     @Test public void deserializeDoubleInJava() throws Exception {

         double f = 3.0;

         double r = Numbers.deserDouble();

         assertEquals(r, f, 0.001, "Doubles are the same");

     }

     @Test public void deserializeDoubleInJS() throws Exception {

         double f = 3.0;

         assertExec("Should be the same", "org_apidesign_vm4brwsr_Numbers_deserDoubleD", f);

     }

     /*

     @Test public void serDouble() throws IOException {

         double f = 3.0;

         ByteArrayOutputStream os = new ByteArrayOutputStream();

         DataOutputStream d = new DataOutputStream(os);

         d.writeLong(3454);

         d.close();

         StringBuilder sb = new StringBuilder();

         byte[] arr = os.toByteArray();

         for (int i = 0; i < arr.length; i++) {

             sb.append("(byte)").append(arr[i]).append(", ");

         }

         fail("" + sb);

     }

 */    

     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);

     }

 }