/**

 * 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.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 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 cannotCallNonStaticMethodWithNull() throws Exception {

        try {

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

            return "should not happen";

        } catch (Exception ex) {

            return ex.getClass().getName() + ":" + ex.getMessage();

        }

    }

    @Compare public String newInstanceFails() throws InstantiationException {

        try {

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

        } catch (IllegalAccessException ex) {

            return ex.getClass().getName();

        }

    }

    @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]);

    }

    @Factory

    public static Object[] create() {

        return VMTest.create(ReflectionTest.class);

    }

}