/**

 * 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.vm4brwsr;

import javax.script.Invocable;

import javax.script.ScriptException;

import static org.testng.Assert.*;

class TestUtils {

    static Object execCode(Invocable code, CharSequence codeSeq,

        String msg, Class<?> clazz, String method, Object expRes, Object... args) 

            throws Exception

    {

        Object ret = null;

        try {

            ret = code.invokeFunction("bck2brwsr");

            ret = code.invokeMethod(ret, "loadClass", clazz.getName());

            ret = code.invokeMethod(ret, method, args);

        } catch (ScriptException ex) {

            fail("Execution failed in " + StaticMethodTest.dumpJS(codeSeq), ex);

        } catch (NoSuchMethodException ex) {

            fail("Cannot find method in " + StaticMethodTest.dumpJS(codeSeq), ex);

        }

        if (ret == null && expRes == null) {

            return null;

        }

        if (expRes != null && expRes.equals(ret)) {

            return null;

        }

        if (expRes instanceof Number) {

            // in case of Long it is necessary convert it to number

            // since the Long is represented by two numbers in JavaScript

            try {

                ret = code.invokeMethod(ret, "toFP");

                ret = code.invokeFunction("Number", ret);

            } catch (ScriptException ex) {

                fail("Conversion to number failed in " + StaticMethodTest.dumpJS(codeSeq), ex);

            } catch (NoSuchMethodException ex) {

                fail("Cannot find global Number(x) function in " + StaticMethodTest.dumpJS(codeSeq), ex);

            }

        }

        return ret;

    }

}