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  * The Original Software is NetBeans. The Initial Developer of the Original

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 package net.java.html.boot.truffle;

 import com.oracle.truffle.api.source.Source;

 import com.oracle.truffle.api.vm.PolyglotEngine;

 import java.lang.annotation.Annotation;

 import java.lang.reflect.Method;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.concurrent.Executors;

 import net.java.html.boot.BrowserBuilder;

 import org.netbeans.html.boot.spi.Fn;

 import org.netbeans.html.json.tck.JavaScriptTCK;

 import org.netbeans.html.json.tck.KOTest;

 import org.testng.Assert;

 import static org.testng.Assert.assertEquals;

 import org.testng.SkipException;

 import org.testng.annotations.Factory;

 import org.testng.annotations.Test;

 /**

  *

  * @author Jaroslav Tulach

  */

 public class TruffleJavaScriptTest {

     private static Class<?> browserClass;

     private static Fn.Presenter browserPresenter;

     public TruffleJavaScriptTest() {

     }

     @Factory public static Object[] compatibilityTests() throws Exception {

         PolyglotEngine engine = PolyglotEngine.newBuilder().build();

         PolyglotEngine.Value result = null;

         try {

             result = engine.eval(Source.fromText("6 * 7", "test.js").withMimeType("text/javascript"));

         } catch (Exception notSupported) {

             if (notSupported.getMessage().contains("text/javascript")) {

                 return new Object[] { new SkipTest(notSupported.getMessage()) };

             }

         }

         assertEquals(42, result.as(Number.class).intValue(), "Executed OK");

         final BrowserBuilder bb = BrowserBuilder.newBrowser(TrufflePresenters.create(SingleCase.JS)).

             loadClass(TruffleJavaScriptTest.class).

             loadPage("empty.html").

             invoke("initialized");

         Executors.newSingleThreadExecutor().submit(new Runnable() {

             @Override

             public void run() {

                 bb.showAndWait();

             }

         });

         List<Object> res = new ArrayList<>();

         Class<? extends Annotation> test = 

             loadClass().getClassLoader().loadClass(KOTest.class.getName()).

             asSubclass(Annotation.class);

         Class[] arr = (Class[]) loadClass().getDeclaredMethod("tests").invoke(null);

         for (Class c : arr) {

             if (c.getSimpleName().contains("GC")) {

                 continue;

             }

             for (Method m : c.getMethods()) {

                 if (m.getAnnotation(test) != null) {

                     res.add(new SingleCase(browserPresenter, m));

                 }

             }

         }

         return res.toArray();

     }

     static synchronized Class<?> loadClass() throws InterruptedException {

         while (browserClass == null) {

             TruffleJavaScriptTest.class.wait();

         }

         return browserClass;

     }

     public static synchronized void ready(Class<?> browserCls) throws Exception {

         browserClass = browserCls;

         browserPresenter = Fn.activePresenter();

         TruffleJavaScriptTest.class.notifyAll();

     }

     public static void initialized() throws Exception {

         Assert.assertSame(TruffleJavaScriptTest.class.getClassLoader(),

             ClassLoader.getSystemClassLoader(),

             "No special classloaders"

         );

         TruffleJavaScriptTest.ready(Tck.class);

     }

     public static final class Tck extends JavaScriptTCK {

         public static Class[] tests() {

             return testClasses();

         }

     }

     public static class SkipTest {

         private final String message;

         public SkipTest(String message) {

             this.message = message;

         }

         @Test

         public void needsGraalVMToExecuteTheTests() {

             throw new SkipException(message);

         }

     }

 }