/*
 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */
package com.oracle.truffle.api.impl;

import java.util.concurrent.Executors;

import org.junit.BeforeClass;
import org.junit.Test;

import com.oracle.truffle.api.source.Source;
import com.oracle.truffle.api.vm.ImplicitExplicitExportTest.ExportImportLanguage1;
import static com.oracle.truffle.api.vm.ImplicitExplicitExportTest.L1;
import com.oracle.truffle.api.vm.PolyglotEngine;
import java.lang.reflect.Method;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

public class AccessorTest {
    public static Method find;

    @BeforeClass
    public static void initAccessors() throws Exception {
        find = Accessor.class.getDeclaredMethod("findLanguageByClass", Object.class, Class.class);
        find.setAccessible(true);
    }

    @Test
    public void canGetAccessToOwnLanguageInstance() throws Exception {
        PolyglotEngine vm = PolyglotEngine.newBuilder().executor(Executors.newSingleThreadExecutor()).build();
        PolyglotEngine.Language language = vm.getLanguages().get(L1);
        assertNotNull("L1 language is defined", language);

        Source s = Source.fromText("return nothing", "nothing");
        Object ret = language.eval(s).get();
        assertNull("nothing is returned", ret);

        ExportImportLanguage1 afterInitialization = (ExportImportLanguage1) find.invoke(null, vm, ExportImportLanguage1.class);
        assertNotNull("Language found", afterInitialization);
    }
}