package org.apidesign.vm4brwsr;

 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 StringTest {

     @Test public void firstChar() throws Exception {

         assertExec(

             "First char in Hello is H",

             "org_apidesign_vm4brwsr_StringSample_sayHelloCI",

             "H", 0

         );

     }

     @Test public void toStringConcatenation() throws Exception {

         assertExec(

             "Five executions should generate 5Hello World!",

             "org_apidesign_vm4brwsr_StringSample_toStringTestLjava_lang_StringI",

             "5Hello World!", 5

         );

     }

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

         StringBuilder sb = new StringBuilder();

         Invocable i = StaticMethodTest.compileClass(sb, 

             "org/apidesign/vm4brwsr/StringSample",

             "java/lang/String"

         );

         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);

     }

 }