package apifest;

import junit.framework.TestCase;

import org.apidesign.apifest08.currency.CurrencyRate;

import org.apidesign.apifest08.currency.CurrencyRateFactory;

/** Write a test that works with version from task A and fails with version B.

 */

public class CurrencyTest extends TestCase {

    public CurrencyTest(String n) {

        super(n);

    }

    public void testCompatibility() throws Exception {

        CurrencyRate rate = CurrencyRateFactory.getInstance().createCurrencyRate("CZK", "USD", 1, 2);

        assertEquals("Implements one interface", 1, rate.getClass().getInterfaces().length);

    }

}