/**

  * 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.tck;

 import java.io.Serializable;

 import java.lang.ClassValue;

 import org.apidesign.bck2brwsr.vmtest.Compare;

 import org.apidesign.bck2brwsr.vmtest.VMTest;

 import org.testng.annotations.Factory;

 /**

  *

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

  */

 public class ReflectionClassValueTest {

     private static final class StringValue extends ClassValue<String> {

         private final boolean upper;

         public StringValue(boolean upper) {

             this.upper = upper;

         }

         @Override

         protected String computeValue(Class<?> type) {

             final String str = new String(type.toString());

             return upper ? str.toUpperCase() : str.toLowerCase();

         }

     }

     private static final StringValue UPPER = new StringValue(true);

     private static final StringValue LOWER = new StringValue(false);

     @Compare public String upperRunnable() {

         return UPPER.get(Runnable.class);

     }

     @Compare public String lowerRunnable() {

         return LOWER.get(Runnable.class);

     }

     @Compare public boolean valueIsCached() {

         String one = LOWER.get(Runnable.class);

         String two = LOWER.get(Runnable.class);

         return one == two;

     }

     @Compare public String upperObject() {

         return UPPER.get(Object.class);

     }

     @Compare public String lowerObject() {

         return LOWER.get(Object.class);

     }

     @Compare public String upperLowerString() {

         return UPPER.get(String.class) + LOWER.get(String.class);

     }

     @Compare public String lowerUpperSeq() {

         return LOWER.get(CharSequence.class) + UPPER.get(CharSequence.class);

     }

     private static final class CountingNull extends ClassValue<Object> {

         int cnt;

         @Override

         protected Object computeValue(Class<?> type) {

             cnt++;

             return null;

         }

     }

     @Compare public int getNullThreeTimes() {

         CountingNull counter = new CountingNull();

         Object o1 = counter.get(Serializable.class);

         Object o2 = counter.get(Serializable.class);

         Object o3 = counter.get(Serializable.class);

         assert o1 == null;

         assert o2 == null;

         assert o3 == null;

         return counter.cnt;

     }

     private static final class NewObj extends ClassValue<Integer> {

         int cnt;

         @Override

         protected Integer computeValue(Class<?> type) {

             cnt++;

             return new Integer(cnt);

         }

     }

     @Compare public boolean valueCanBeCleared() {

         NewObj cache = new NewObj();

         Integer one = cache.get(Runnable.class);

         Integer two = cache.get(Runnable.class);

         assert one == two;

         cache.remove(Runnable.class);

         Integer three = cache.get(Runnable.class);

         return one != three;

     }

     @Factory

     public static Object[] create() {

         return VMTest.create(ReflectionClassValueTest.class);

     }

 }