/**

  * 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.bck2brwsr.vmtest.impl;

 import org.apidesign.bck2brwsr.core.JavaScriptBody;

 import org.apidesign.bck2brwsr.vmtest.BrwsrTest;

 import org.apidesign.bck2brwsr.vmtest.VMTest;

 import org.testng.annotations.Factory;

 /** Verify cooperation with net.java.html.js annotations.

  *

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

  */

 public class HtmlAnnotationsTest {

     static int firstCheck;

     private void assertMulNotDefinedForTheFirstTime() {

         if (firstCheck++ == 0) {

             Object mul = windowMul();

             assert mul == null : "htmlannotations.js should not be processed before first call to HtmlAnnotations class";

         }

     }

     @BrwsrTest public void fourtyTwo() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         assertEquals(HtmlAnnotations.fourtyTwo(), 42);

     }

     @BrwsrTest public void externalMul() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         assertEquals(HtmlAnnotations.useExternalMul(7, 6), 42);

     }

     @BrwsrTest public void callRunnableFromJS() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         assertEquals(HtmlAnnotations.callback(), 1);

     }

     @BrwsrTest public void callStaticMethodFromJS() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         assertEquals(HtmlAnnotations.staticCallback(), 1);

     }

     @BrwsrTest public void callbackWithFourParamsAndReturnType() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         Object instance = HtmlAnnotations.create();

         assertNotNull(instance, "Instance created");

         assertEquals(HtmlAnnotations.first(instance, 42, 31), 42);

     }

     @BrwsrTest public void callbackWithObjectParamsAndReturnType() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         Object instance = HtmlAnnotations.create();

         assertNotNull(instance, "Instance created");

         assertEquals(HtmlAnnotations.onError(instance, 42.0), 42.0);

     }

     private static void assertEquals(double real, double exp) {

         if (real - exp < 0.01) {

             return;

         }

         assert false : "Expecting " + exp + " but was " + real;

     }

     private static void assertNotNull(Object obj, String msg) {

         assert obj != null : msg;

     }

     @JavaScriptBody(args = {}, body = "return window.mul ? window.mul : null;")

     private static native Object windowMul();

     @Factory public static Object[] create() {

         return VMTest.create(HtmlAnnotationsTest.class);

     }

 }