/**

  * 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.htmlpage;

 import java.util.ArrayList;

 import java.util.List;

 import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;

 import org.apidesign.bck2brwsr.htmlpage.api.Page;

 import org.apidesign.bck2brwsr.htmlpage.api.Property;

 import static org.testng.Assert.*;

 import org.testng.annotations.Test;

 /**

  *

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

  */

 @Page(xhtml = "Empty.html", className = "Model", properties = {

     @Property(name = "value", type = int.class),

     @Property(name = "unrelated", type = long.class)

 })

 public class ModelTest {

     @Test public void classGeneratedWithSetterGetter() {

         Class<?> c = Model.class;

         assertNotNull(c, "Class for empty page generated");

         Model.setValue(10);

         assertEquals(10, Model.getValue(), "Value changed");

     }

     @Test public void computedMethod() {

         Model.setValue(4);

         assertEquals(16, Model.getPowerValue());

     }

     @Test public void derivedPropertiesAreNotified() {

         MockKnockout my = new MockKnockout();

         MockKnockout.next = my;

         Model.applyBindings();

         Model.setValue(33);

         assertEquals(my.mutated.size(), 2, "Two properties changed: " + my.mutated);

         assertTrue(my.mutated.contains("powerValue"), "Power value is in there: " + my.mutated);

         assertTrue(my.mutated.contains("value"), "Simple value is in there: " + my.mutated);

         my.mutated.clear();

         Model.setUnrelated(44);

         assertEquals(my.mutated.size(), 1, "One property changed");

         assertTrue(my.mutated.contains("unrelated"), "Its name is unrelated");

     }

     @Test public void computedPropertyCannotWriteToModel() {

         try {

             String res = Model.getNotAllowedWrite();

             fail("We should not be allowed to write to the model: " + res);

         } catch (IllegalStateException ex) {

             // OK, we can't read

         }

     }

     @Test public void computedPropertyCannotReadToModel() {

         try {

             String res = Model.getNotAllowedRead();

             fail("We should not be allowed to read from the model: " + res);

         } catch (IllegalStateException ex) {

             // OK, we can't read

         }

     }

     @ComputedProperty

     static int powerValue(int value) {

         return value * value;

     }

     @ComputedProperty

     static String notAllowedRead() {

         return "Not allowed callback: " + Model.getUnrelated();

     }

     @ComputedProperty

     static String notAllowedWrite() {

         Model.setUnrelated(11);

         return "Not allowed callback!";

     }

     static class MockKnockout extends Knockout {

         List<String> mutated = new ArrayList<String>();

         @Override

         public void valueHasMutated(String prop) {

             mutated.add(prop);

         }

     }

 }