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 package org.apidesign.java4browser;

 import javax.script.Invocable;

 import javax.script.ScriptException;

 import org.testng.annotations.Test;

 import static org.testng.Assert.*;

 /**

  *

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

  */

 public class InstanceTest {

     @Test public void verifyMagicOne() throws Exception {

         assertExec(

             "Should be seven",

             "org_apidesign_java4browser_Instance_magicOneD",

             Double.valueOf(3.3)

         );

     }

     private static void assertExec(String msg, String methodName, Object expRes, Object... args) throws Exception {

         StringBuilder sb = new StringBuilder();

         Invocable i = StaticMethodTest.compileClass("Instance.class", sb);

         Object ret = null;

         try {

             ret = i.invokeFunction(methodName, args);

         } catch (ScriptException ex) {

             fail("Execution failed in " + sb, ex);

         } catch (NoSuchMethodException ex) {

             fail("Cannot find method in " + sb, ex);

         }

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

             return;

         }

         if (expRes.equals(ret)) {

             return;

         }

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

     }

 }