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package org.apidesign.codeinjection;

import org.apidesign.codeinjection.spi.CountDownExtender;

import org.junit.Test;

import org.netbeans.junit.MockServices;

import static org.junit.Assert.*;

/** Final count down test.

 *

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

 */

public class Version20Test {

    public Version20Test() {

    }

    /** creates version 2.0 */

    private static CountDown create(int value) {

        return new CountDownImplV2(value);

    }

    @Test

    public void testDecrementFourTimes() {

        MockServices.setServices();

        CountDown counter = create(4);

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertTrue("Down now", counter.isDown());

    }

    // BEGIN: codeinjection.twice

    @Test

    public void testDecrementTwoTimesEnough() {

        MockServices.setServices(DecrementByTwo.class);

        CountDown counter = create(4);

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertFalse("Not down yet", counter.isDown()); counter.down();

        assertTrue("Two Down is enough", counter.isDown());

    }

    public static final class DecrementByTwo implements CountDownExtender {

        public int decrement(int value) {

            return value - 2;

        }

    }

    // END: codeinjection.twice

}