/* -*- c++ -*- */
/*
 * Copyright 2002,2013,2018 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio 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 3, or (at your option)
 * any later version.
 *
 * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "circular_file.h"
#include <unistd.h>
#include <boost/test/unit_test.hpp>

static const char* test_file = "qa_gr_circular_file.data";
static const int BUFFER_SIZE = 8192;
static const int NWRITE = 8192 * 9 / 8;

BOOST_AUTO_TEST_CASE(t1)
{
#ifdef HAVE_MMAP
    gr::circular_file* cf_writer;
    gr::circular_file* cf_reader;

    // write the data...
    cf_writer = new gr::circular_file(test_file, true, BUFFER_SIZE * sizeof(short));

    short sd;
    for (int i = 0; i < NWRITE; i++) {
        sd = i;
        cf_writer->write(&sd, sizeof(sd));
    }

    delete cf_writer;

    // now read it back...
    cf_reader = new gr::circular_file(test_file);
    for (int i = 0; i < BUFFER_SIZE; i++) {
        int n = cf_reader->read(&sd, sizeof(sd));
        BOOST_CHECK_EQUAL((int)sizeof(sd), n);
        BOOST_CHECK_EQUAL(NWRITE - BUFFER_SIZE + i, (int)sd);
    }

    int n = cf_reader->read(&sd, sizeof(sd));
    BOOST_CHECK_EQUAL(0, n);

    delete cf_reader;
    unlink(test_file);
#endif // HAVE_MMAP
}