AbstractObservableTransformerSourceTest.java

/*
 * This file is part of the GeoLatte project.
 *
 *     GeoLatte is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     GeoLatte 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 Lesser General Public License for more details.
 *
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with GeoLatte.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Copyright (C) 2010 - 2010 and Ownership of code is shared by:
 * Qmino bvba - Romeinsestraat 18 - 3001 Heverlee  (http://www.qmino.com)
 * Geovise bvba - Generaal Eisenhowerlei 9 - 2140 Antwerpen (http://www.geovise.com)
 */

package org.geolatte.common.transformer;

import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.integration.junit4.JUnit4Mockery;
import org.junit.Before;
import org.junit.Test;

/**
 * No comment provided yet for this class.
 * <p/>
 * <p>
 * <i>Creation-Date</i>: 06-May-2010<br>
 * <i>Creation-Time</i>:  14:36:18<br>
 * </p>
 *
 * @author Bert Vanhooff
 * @author <a href="http://www.qmino.com">Qmino bvba</a>
 * @since SDK1.5
 */
public class AbstractObservableTransformerSourceTest {
    Mockery context = new JUnit4Mockery();

        AbstractObservableTransformerSource transformerSource;

        @Before
        public void setUp() throws Exception {

            transformerSource = new ConcreteObservableTransformerSource();
        }

        /**
         * Checks whether the TransformerErrorEvent is fired correctly once.
         */
        @Test
        public void test_TransformerSourceEventListenerSubscribeAndFire() {

            final TransformerSourceEventListener subscriber = context.mock(TransformerSourceEventListener.class);
            transformerSource.addTransformerSourceEventListener(subscriber);

            // Expectations
            final TransformerSourceErrorEvent expectedEvent = new TransformerSourceErrorEvent(this,null);
            context.checking(new Expectations() {
                {oneOf (subscriber).ErrorOccurred(expectedEvent);}
            });

            // Fire the event
            transformerSource.onSourceErrorOccurred(expectedEvent);

            // Check whether expectations have are satisfied
            context.assertIsSatisfied();
        }

        /**
         * Checks whether unsubscribing the TransformerErrorEvent works correctly.
         */
        @Test
        public void test_TransformerSourceEventListenerUnsubscribe() {

            final TransformerSourceEventListener subscriber = context.mock(TransformerSourceEventListener.class);

            // subscribe and unscubscribe
            transformerSource.addTransformerSourceEventListener(subscriber);
            transformerSource.removeTransformerSourceEventListener(subscriber);

            // Expectations
            final TransformerSourceErrorEvent expectedEvent = new TransformerSourceErrorEvent(this,null);
            context.checking(new Expectations() {
                {never (subscriber).ErrorOccurred(with(any(TransformerSourceErrorEvent.class)));}
            });

            // Fire the event
            transformerSource.onSourceErrorOccurred(expectedEvent);

            // Check whether expectations have are satisfied
            context.assertIsSatisfied();
        }

        /**
         * Most basic implementation of AbstractObservableTransformer, just to test whether the event system works correctly.
         */
        private class ConcreteObservableTransformerSource extends AbstractObservableTransformerSource {

            @Override
            protected Iterable output() {
                return null;
            }
        }
    }