/*
 Copyright (C) 2007 Richard Gomes

 This source code is release under the BSD License.

 This file is part of JQuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://jquantlib.org/

 JQuantLib is free software: you can redistribute it and/or modify it
 under the terms of the JQuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 . The license is also available online at
 .

 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 license for more details.

 JQuantLib is based on QuantLib. http://quantlib.org/
 When applicable, the original copyright notice follows this notice.
 */

/*
 Copyright (C) 2003 RiskMap srl

 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/

 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 . The license is also available online at
 .

 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 license for more details.
 */

package org.jquantlib.testsuite.instruments;

import static org.junit.Assert.fail;

import org.jquantlib.QL;
import org.jquantlib.instruments.Instrument;
import org.jquantlib.instruments.Stock;
import org.jquantlib.quotes.Quote;
import org.jquantlib.quotes.RelinkableHandle;
import org.jquantlib.quotes.SimpleQuote;
import org.jquantlib.testsuite.util.Flag;
import org.junit.Test;

public class InstrumentsTest {

    public InstrumentsTest() {
        QL.info("::::: "+this.getClass().getSimpleName()+" :::::");
    }

    @Test
    public void testObservable() {

        QL.info("Testing observability of instruments...");


        final SimpleQuote me1 = new SimpleQuote(0.0);
        final RelinkableHandle  h = new RelinkableHandle(me1);
        final Instrument s = new Stock(h);

        final Flag f = new Flag();
        s.addObserver(f); //f.registerWith(s);

        s.NPV();
        me1.setValue(3.14);
        if (!f.isUp()) {
            fail("Observer was not notified of instrument change");
        }

        s.NPV();
        f.lower();
        final SimpleQuote me2 = new SimpleQuote(0.0);

        h.linkTo(me2);
        if (!f.isUp()) {
            fail("Observer was not notified of instrument change");
        }

        f.lower();
        s.freeze();
        s.NPV();
        me2.setValue(2.71);
        if (f.isUp()) {
            fail("Observer was notified of frozen instrument change");
        }

        s.NPV();
        s.unfreeze();
        if (!f.isUp()) {
            fail("Observer was not notified of instrument change");
        }
    }

}