/*

Java 4 Browser Bytecode Translator

Copyright (C) 2012-2012 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.java4browser;

import java.io.IOException;

import java.io.InputStream;

import javax.script.Invocable;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineManager;

import javax.script.ScriptException;

import static org.testng.Assert.*;

import org.testng.annotations.Test;

/** Checks the basic behavior of the translator.

 *

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

 */

public class StaticMethodTest {

    @Test public void threePlusFour() throws Exception {

        Invocable i = compileClass("StaticMethod.class");

        Object ret = i.invokeFunction("org_apidesign_java4browser_StaticMethod_sumIII", 3, 4);

        assertEquals(ret, Double.valueOf(7), "Should be seven");

    }

    static Invocable compileClass(String name) throws ScriptException, IOException {

        InputStream is = StaticMethodTest.class.getResourceAsStream(name);

        assertNotNull(is, "Class file found");

        StringBuilder sb = new StringBuilder();

        ByteCodeToJavaScript.compile(name, is, sb);

        ScriptEngineManager sem = new ScriptEngineManager();

        ScriptEngine js = sem.getEngineByExtension("js");

        try {

            Object res = js.eval(sb.toString());

            assertTrue(js instanceof Invocable, "It is invocable object: " + res);

            return (Invocable)js;

        } catch (ScriptException ex) {

            fail("Could not compile:\n" + sb, ex);

            return null;

        }

    }

}