/**

  * Java 4 Browser Bytecode Translator

  * Copyright (C) 2012-2012 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 org.testng.annotations.Test;

 import static org.testng.Assert.*;

 import org.testng.annotations.BeforeClass;

 import org.testng.annotations.BeforeTest;

 /**

  *

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

  */

 public class InstanceTest {

     @Test public void verifyDefaultDoubleValue() throws Exception {

         assertExec(

             "Will be zero",

             "org_apidesign_vm4brwsr_Instance_defaultDblValueD",

             Double.valueOf(0)

         );

     }

     @Test public void verifyStaticMethodCall() throws Exception {

         assertExec(

             "Will be zero",

             "org_apidesign_vm4brwsr_InstanceSub_recallDblD",

             Double.valueOf(0)

         );

     }

     @Test public void verifyAssignedByteValue() throws Exception {

         assertExec(

             "Will one thirty one",

             "org_apidesign_vm4brwsr_Instance_assignedByteValueB",

             Double.valueOf(31)

         );

     }

     @Test public void verifyMagicOne() throws Exception {

         assertExec(

             "Should be three and something",

             "org_apidesign_vm4brwsr_Instance_magicOneD",

             Double.valueOf(3.3)

         );

     }

     @Test public void verifyInstanceMethods() throws Exception {

         assertExec(

             "Should be eleven as we invoke overwritten method, plus 44",

             "org_apidesign_vm4brwsr_Instance_virtualBytesI",

             Double.valueOf(55)

         );

     }

     @Test public void verifyInterfaceMethods() throws Exception {

         assertExec(

             "Retruns default value",

             "org_apidesign_vm4brwsr_Instance_interfaceBytesF",

             Double.valueOf(31)

         );

     }

     @Test public void isNull() throws Exception {

         assertExec(

             "Yes, we are instance",

             "org_apidesign_vm4brwsr_Instance_isNullZ",

             Double.valueOf(0.0)

         );

     }

     @Test public void isInstanceOf() throws Exception {

         assertExec(

             "Yes, we are instance",

             "org_apidesign_vm4brwsr_Instance_instanceOfZZ",

             Double.valueOf(1.0), true

         );

     }

     @Test public void notInstanceOf() throws Exception {

         assertExec(

             "No, we are not an instance",

             "org_apidesign_vm4brwsr_Instance_instanceOfZZ",

             Double.valueOf(0.0), false

         );

     }

     @Test public void verifyCastToClass() throws Exception {

         assertExec(

             "Five signals all is good",

             "org_apidesign_vm4brwsr_Instance_castsWorkIZ",

             Double.valueOf(5.0), false

         );

     }

     @Test public void verifyCastToInterface() throws Exception {

         assertExec(

             "Five signals all is good",

             "org_apidesign_vm4brwsr_Instance_castsWorkIZ",

             Double.valueOf(5.0), true

         );

     }

     protected String startCompilationWith() {

         return "org/apidesign/vm4brwsr/Instance";

     }

     private static CharSequence codeSeq;

     private static Invocable code;

     @BeforeTest 

     public void compileTheCode() throws Exception {

         if (codeSeq == null) {

             StringBuilder sb = new StringBuilder();

             code = StaticMethodTest.compileClass(sb, startCompilationWith());

             codeSeq = sb;

         }

     }

     private 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;

         }

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

     }

 }