/**

  * Back 2 Browser Bytecode Translator

  * Copyright (C) 2012-2015 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 java.util.concurrent.Callable;

 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 = window("mul");

             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);

     }

     @BrwsrTest public void quotedStar() throws Exception {

         assertMulNotDefinedForTheFirstTime();

         HtmlAnnotations.empty();

         Object fn = window("all");

         String msg = invoke(fn);

         assert "*/*".equals(msg) : "String '*/*' as expected: " + msg;

     }

     @BrwsrTest public void date() throws Exception {

         Object april = HtmlAnnotations.april2016();

         assertEquals(HtmlAnnotations.year(april), 2016);

     }

     @BrwsrTest public void yes() throws Exception {

         String yes = HtmlAnnotations.yesNo(new Callable<Boolean>() {

             @Override

             public Boolean call() throws Exception {

                 return Boolean.TRUE;

             }

         });

         assertEquals(yes, "yes", "TRUE is true");

     }

     @BrwsrTest public void no() throws Exception {

         String no = HtmlAnnotations.yesNo(new Callable<Boolean>() {

             @Override

             public Boolean call() throws Exception {

                 return Boolean.FALSE;

             }

         });

         assertEquals(no, "no", "FALSE is false");

     }

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

         if (real - exp < 0.01) {

             return;

         }

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

     }

     private static void assertEquals(Object real, Object exp, String msg) {

         if (real == exp) {

             return;

         }

         if (real != null && real.equals(exp)) {

             return;

         }

         throw new AssertionError(msg + " expected: " + exp + " real: " + real);

     }

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

         assert obj != null : msg;

     }

     @JavaScriptBody(args = { "n" }, body = "return window[n] ? window[n] : null;")

     private static native Object window(String name);

     @JavaScriptBody(args = { "fn" }, body = "return fn();")

     private static native String invoke(Object fn);

     @Factory public static Object[] create() {

         return VMTest.create(HtmlAnnotationsTest.class);

     }

 }