/*
 * Copyright 2012-2015 Red Hat, Inc.
 *
 * This file is part of Thermostat.
 *
 * Thermostat 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; either version 2, or (at your
 * option) any later version.
 *
 * Thermostat 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 Thermostat; see the file COPYING.  If not see
 * <http://www.gnu.org/licenses/>.
 *
 * Linking this code with other modules is making a combined work
 * based on this code.  Thus, the terms and conditions of the GNU
 * General Public License cover the whole combination.
 *
 * As a special exception, the copyright holders of this code give
 * you permission to link this code with independent modules to
 * produce an executable, regardless of the license terms of these
 * independent modules, and to copy and distribute the resulting
 * executable under terms of your choice, provided that you also
 * meet, for each linked independent module, the terms and conditions
 * of the license of that module.  An independent module is a module
 * which is not derived from or based on this code.  If you modify
 * this code, you may extend this exception to your version of the
 * library, but you are not obligated to do so.  If you do not wish
 * to do so, delete this exception statement from your version.
 */

package com.redhat.thermostat.storage.core;

import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.redhat.thermostat.storage.core.Connection;
import com.redhat.thermostat.storage.core.Connection.ConnectionStatus;

public class ConnectionTest {

    private Connection connection;

    private Connection.ConnectionListener listener1;
    private Connection.ConnectionListener listener2;

    @Before
    public void setUp() {

        connection = new Connection() {
            
            @Override
            public void disconnect() {
                /* NO-OP */
            }
            
            @Override
            public void connect() {
                /* NO-OP */
            }
        };
        listener1 = mock(Connection.ConnectionListener.class);
        listener2 = mock(Connection.ConnectionListener.class);
        connection.addListener(listener1);
        connection.addListener(listener2);
    }

    @After
    public void tearDown() {
        connection = null;
        listener1 = null;
        listener2 = null;
    }

    @Test
    public void testListenersConnecting() throws Exception {
        verifyListenersStatus(ConnectionStatus.CONNECTING);
    }

    @Test
    public void testListenersConnected() throws Exception {
        verifyListenersStatus(ConnectionStatus.CONNECTED);
    }

    @Test
    public void testListenersFailedToConnect() throws Exception {
        verifyListenersStatus(ConnectionStatus.FAILED_TO_CONNECT);
    }

    @Test
    public void testListenersDisconnected() throws Exception {
        verifyListenersStatus(ConnectionStatus.DISCONNECTED);
    }

    private void verifyListenersStatus(ConnectionStatus status) {
        connection.fireChanged(status);
        verify(listener1).changed(status);
        verify(listener2).changed(status);
    }
    
    @Test
    public void verifyToString() {
        // URL == null should return empty string
        String actual = connection.toString();
        assertEquals("", actual);
        String newUrl = "mongodb://someurl";
        connection.setUrl(newUrl);
        actual = connection.toString();
        assertEquals(newUrl, actual);
    }

}