/**

  * 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.tck;

 import java.lang.annotation.Retention;

 import java.lang.annotation.RetentionPolicy;

 import java.lang.reflect.Method;

 import java.util.Arrays;

 import java.util.Collections;

 import java.util.List;

 import org.apidesign.bck2brwsr.core.JavaScriptBody;

 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 ReflectionTest {

     @Compare public boolean nonNullThis() {

         return this == null;

     }

     @Compare public String intType() {

         return Integer.TYPE.toString();

     }

     @Compare public String voidType() throws Exception {

         return void.class.toString();

     }

     @Compare public String longClass() {

         return long.class.toString();

     }

     @Compare public boolean isRunnableInterface() {

         return Runnable.class.isInterface();

     }

     @Compare public String isRunnableHasRunMethod() throws NoSuchMethodException {

         return Runnable.class.getMethod("run").getName();

     }

     @Compare public String namesOfMethods() {

         StringBuilder sb = new StringBuilder();

         String[] arr = new String[20];

         int i = 0;

         for (Method m : StaticUse.class.getMethods()) {

             arr[i++] = m.getName();

         }

         for (String s : sort(arr, i)) {

             sb.append(s).append("\n");

         }

         return sb.toString();

     }

     @Compare public String namesOfDeclaringClassesOfMethods() {

         StringBuilder sb = new StringBuilder();

         String[] arr = new String[20];

         int i = 0;

         for (Method m : StaticUse.class.getMethods()) {

             arr[i++] = m.getName() + "@" + m.getDeclaringClass().getName();

         }

         for (String s : sort(arr, i)) {

             sb.append(s).append("\n");

         }

         return sb.toString();

     }

     @Compare public String cannotCallNonStaticMethodWithNull() throws Exception {

         StaticUse.class.getMethod("instanceMethod").invoke(null);

         return "should not happen";

     }

     @Compare public Object voidReturnType() throws Exception {

         return StaticUse.class.getMethod("instanceMethod").getReturnType();

     }

     @Retention(RetentionPolicy.RUNTIME)

     @interface Ann {

     }

     @Compare public String annoClass() throws Exception {

         Retention r = Ann.class.getAnnotation(Retention.class);

         assert r != null : "Annotation is present";

         assert r.value() == RetentionPolicy.RUNTIME : "Policy value is OK: " + r.value();

         return r.annotationType().getName();

     }

     enum E { A, B };

     @Compare public boolean isEnum() {

         return E.A.getClass().isEnum();

     }

     @Compare public boolean isNotEnum() {

         return "".getClass().isEnum();

     }

     @Compare public String newInstanceFails() throws InstantiationException {

         try {

             return "success: " + StaticUse.class.newInstance();

         } catch (IllegalAccessException ex) {

             return ex.getClass().getName();

         }

     }

     @Compare public String paramTypes() throws Exception {

         Method plus = StaticUse.class.getMethod("plus", int.class, Integer.TYPE);

         final Class[] pt = plus.getParameterTypes();

         return pt[0].getName();

     }

     @Compare public String paramTypesNotFound() throws Exception {

         return StaticUse.class.getMethod("plus", int.class, double.class).toString();

     }

     @Compare public int methodWithArgs() throws Exception {

         Method plus = StaticUse.class.getMethod("plus", int.class, Integer.TYPE);

         return (Integer)plus.invoke(null, 2, 3);

     }

     @Compare public String classGetNameForByte() {

          return byte.class.getName();

     }

     @Compare public String classGetNameForBaseObject() {

         return newObject().getClass().getName();

     }

     @Compare public String classGetNameForJavaObject() {

         return new Object().getClass().getName();

     }

     @Compare public String classGetNameForObjectArray() {

         return (new Object[3]).getClass().getName();

     }

     @Compare public String classGetNameForSimpleIntArray() {

         return (new int[3]).getClass().getName();

     }

     @Compare public boolean sameClassGetNameForSimpleCharArray() {

         return (new char[3]).getClass() == (new char[34]).getClass();

     }

     @Compare public String classGetNameForMultiIntArray() {

         return (new int[3][4][5][6][7][8][9]).getClass().getName();

     }

     @Compare public String classGetNameForMultiIntArrayInner() {

         final int[][][][][][][] arr = new int[3][4][5][6][7][8][9];

         int[][][][][][] subarr = arr[0];

         int[][][][][] subsubarr = subarr[0];

         return subsubarr.getClass().getName();

     }

     @Compare public String classGetNameForMultiStringArray() {

         return (new String[3][4][5][6][7][8][9]).getClass().getName();

     }

     @Compare public String classForByte() throws Exception {

         return Class.forName("[Z").getName();

     }

     @Compare public String classForUnknownArray() {

         try {

             return Class.forName("[W").getName();

         } catch (Exception ex) {

             return ex.getClass().getName();

         }

     }

     @Compare public String classForUnknownDeepArray() {

         try {

             return Class.forName("[[[[[W").getName();

         } catch (Exception ex) {

             return ex.getClass().getName();

         }

     }

     @Compare public String componentGetNameForObjectArray() {

         return (new Object[3]).getClass().getComponentType().getName();

     }

     @Compare public boolean sameComponentGetNameForObjectArray() {

         return (new Object[3]).getClass().getComponentType() == Object.class;

     }

     @Compare public String componentGetNameForSimpleIntArray() {

         return (new int[3]).getClass().getComponentType().getName();

     }

     @Compare public String componentGetNameForMultiIntArray() {

         return (new int[3][4][5][6][7][8][9]).getClass().getComponentType().getName();

     }

     @Compare public String componentGetNameForMultiStringArray() {

         Class<?> c = (new String[3][4][5][6][7][8][9]).getClass();

         StringBuilder sb = new StringBuilder();

         for (;;) {

             sb.append(c.getName()).append("\n");

             c = c.getComponentType();

             if (c == null) {

                 break;

             }

         }

         return sb.toString();

     }

     @Compare public boolean isArray() {

         return new Object[0].getClass().isArray();

     }

     @JavaScriptBody(args = { "arr", "len" }, body="var a = arr.slice(0, len); a.sort(); return a;")

     private static String[] sort(String[] arr, int len) {

         List<String> list = Arrays.asList(arr).subList(0, len);

         Collections.sort(list);

         return list.toArray(new String[0]);

     }

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

     private static Object newObject() {

         return new Object();

     }

     @Factory

     public static Object[] create() {

         return VMTest.create(ReflectionTest.class);

     }

 }