/**

 * 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.ScriptEngine;

import javax.script.ScriptEngineManager;

import static org.testng.Assert.fail;

import org.testng.annotations.AfterClass;

import org.testng.annotations.BeforeClass;

import org.testng.annotations.Test;

/**

 *

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

 */

public class InstanceTest {

    @Test public void verifyDefaultDoubleValue() throws Exception {

        assertExec(

            "Will be zero",

            Instance.class, "defaultDblValue__D",

            Double.valueOf(0)

        );

    }

    @Test public void verifyStaticMethodCall() throws Exception {

        assertExec(

            "Will be zero",

            InstanceSub.class, "recallDbl__D",

            Double.valueOf(0)

        );

    }

    @Test public void verifyAssignedByteValue() throws Exception {

        assertExec(

            "Will one thirty one",

            Instance.class, "assignedByteValue__B",

            Double.valueOf(31)

        );

    }

    @Test public void noInstOfExposed() throws Exception {

        assertExec(

            "No instOf properties found",

            Instance.class, "noInstOfExposed__I",

            Double.valueOf(0)

        );

    }

    @Test public void noIterablePropsOnObject() throws Exception {

        assertExec(

            "No instOf properties found",

            Instance.class, "props__Ljava_lang_String_2",

            ""

        );

    }

    @Test public void verifyMagicOne() throws Exception {

        assertExec(

            "Should be three and something",

            Instance.class, "magicOne__D",

            Double.valueOf(3.3)

        );

    }

    @Test public void verifyInstanceMethods() throws Exception {

        assertExec(

            "Should be eleven as we invoke overwritten method, plus 44",

            Instance.class, "virtualBytes__I",

            Double.valueOf(55)

        );

    }

    @Test public void verifyInterfaceMethods() throws Exception {

        assertExec(

            "Retruns default value",

            Instance.class, "interfaceBytes__F",

            Double.valueOf(31)

        );

    }

    @Test public void isNull() throws Exception {

        assertExec(

            "Yes, we are instance",

            Instance.class, "isNull__Z",

            Double.valueOf(0.0)

        );

    }

    @Test public void isInstanceOf() throws Exception {

        assertExec(

            "Yes, we are instance",

            Instance.class, "instanceOf__ZI",

            Double.valueOf(1.0), 2

        );

    }

    @Test public void notInstanceOf() throws Exception {

        assertExec(

            "No, we are not an instance",

            Instance.class, "instanceOf__ZI",

            Double.valueOf(0.0), 1

        );

    }

    @Test public void nullInstanceOf() throws Exception {

        assertExec(

            "No, null is not an instance",

            Instance.class, "instanceOf__ZI",

            Double.valueOf(0.0), 0

        );

    }

    @Test public void verifyCastToClass() throws Exception {

        assertExec(

            "Five signals all is good",

            Instance.class, "castsWork__IZ",

            Double.valueOf(5.0), false

        );

    }

    @Test public void verifyCastToInterface() throws Exception {

        assertExec(

            "Five signals all is good",

            Instance.class, "castsWork__IZ",

            Double.valueOf(5.0), true

        );

    }

    @Test public void sharedConstructor() throws Exception {

        assertExec(

            "Constructor of first and 2nd instance should be the same",

            Instance.class, "sharedConstructor__Z",

            Double.valueOf(1.0)

        );

    }

    @Test public void differentConstructor() throws Exception {

        assertExec(

            "Constructor of X and Y should be the different",

            Instance.class, "differentConstructor__Z",

            Double.valueOf(0)

        );

    }

    @Test public void jsObjectIsLikeJavaObject() throws Exception {

        assertExec(

            "JavaScript object is instance of Java Object",

            Instance.class, "iofObject__Z",

            Double.valueOf(1)

        );

    }

    @Test public void jsCallingConvention() throws Exception {

        assertExec(

            "Pointer to 'this' is passed automatically (and not as a first argument)",

            Instance.class, "jscall__I",

            Double.valueOf(31)

        );

    }

    protected String startCompilationWith() {

        return "org/apidesign/vm4brwsr/Instance";

    }

    private static TestVM code;

    @BeforeClass

    public void compileTheCode() throws Exception {

        code = TestVM.compileClass(startCompilationWith());

    }

    @AfterClass

    public static void releaseTheCode() {

        code = null;

    }

    private void assertExec(

        String msg, Class clazz, String method, Object expRes, Object... args

    ) throws Exception {

        code.assertExec(msg, clazz, method, expRes, args);

    }

}