/*
 * Copyright 2012-2014 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.thread.harvester;

import com.redhat.thermostat.storage.core.WriterID;
import com.redhat.thermostat.thread.dao.ThreadDao;
import com.redhat.thermostat.thread.model.ThreadSession;
import com.redhat.thermostat.thread.model.ThreadSummary;
import java.lang.management.ThreadMXBean;
import org.junit.Before;
import org.junit.Test;

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

/*
 */
public class ThreadSummaryHelperTest {

    private static final String DEFAULT_W_ID = "0xcafe";
    private static final int DEFAULT_THREAD_COUNT = 42;
    private static final int DEFAULT_DAEMON_THREAD_COUNT = 7;

    private String vmId;
    private WriterID writerId;
    private ThreadDao threadDao;

    private ThreadMXBean collectorBean;

    private ThreadSession session;

    @Before
    public void setUp() throws Exception {
        vmId = "testVM";
        writerId  = mock(WriterID.class);
        when(writerId.getWriterID()).thenReturn(DEFAULT_W_ID);

        threadDao = mock(ThreadDao.class);

        collectorBean = mock(ThreadMXBean.class);
        when(collectorBean.getThreadCount()).thenReturn(DEFAULT_THREAD_COUNT);
        when(collectorBean.getDaemonThreadCount()).thenReturn(DEFAULT_DAEMON_THREAD_COUNT);

        session = new ThreadSession();
        session.setSession("0xcafe");
    }

    @Test
    public void testCreateThreadSummary() throws Exception {
        ThreadSummaryHelper helper =
                new ThreadSummaryHelper(threadDao, writerId, vmId);

        long timestamp = -1l;

        ThreadSummary summary = helper.createThreadSummary(collectorBean, timestamp, session);

        assertNotNull(summary);

        verify(writerId).getWriterID();
        verify(collectorBean).getThreadCount();
        verify(collectorBean).getDaemonThreadCount();

        assertEquals(summary.getAgentId(), DEFAULT_W_ID);
        assertEquals(summary.getVmId(), vmId);

        assertEquals(summary.getSession(), session.getSession());

        assertEquals(summary.getCurrentLiveThreads(), DEFAULT_THREAD_COUNT);
        assertEquals(summary.getCurrentDaemonThreads(), DEFAULT_DAEMON_THREAD_COUNT);
        assertEquals(summary.getTimeStamp(), timestamp);
    }

    @Test
    public void testSaveSummary() throws Exception {
        ThreadSummaryHelper helper =
                new ThreadSummaryHelper(threadDao, writerId, vmId);

        ThreadSummary summary  = mock(ThreadSummary.class);
        helper.saveSummary(summary);
        
        verify(threadDao).saveSummary(summary);
    }
}
