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/* -*- c++ -*- */
/*
* Copyright 2007,2011,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gnuradio/blocks/head.h>
#include <gnuradio/blocks/nop.h>
#include <gnuradio/blocks/null_sink.h>
#include <gnuradio/blocks/null_source.h>
#include <gnuradio/messages/msg_passing.h>
#include <gnuradio/top_block.h>
#include <boost/test/unit_test.hpp>
#include <boost/thread/thread.hpp>
/*
* The gr::block::nop block has been instrumented so that it counts
* the number of messages sent to it. We use this feature to confirm
* that gr::blocks::nop's call to set_msg_handler is working correctly.
*/
BOOST_AUTO_TEST_CASE(t0)
{
static const int NMSGS = 10;
gr::top_block_sptr tb = gr::make_top_block("top");
gr::block_sptr src = gr::blocks::null_source::make(sizeof(int));
gr::blocks::nop::sptr nop = gr::blocks::nop::make(sizeof(int));
gr::block_sptr dst = gr::blocks::null_sink::make(sizeof(int));
tb->connect(src, 0, nop, 0);
tb->connect(nop, 0, dst, 0);
// Must start graph before sending messages
tb->start();
// Send them...
pmt::pmt_t port(pmt::intern("port"));
for (int i = 0; i < NMSGS; i++) {
send(nop, port, pmt::mp(pmt::mp("example-msg"), pmt::mp(i)));
}
// Give the messages a chance to be processed
boost::this_thread::sleep(boost::posix_time::milliseconds(100));
tb->stop();
tb->wait();
// Confirm that the nop block received the right number of messages.
BOOST_CHECK_EQUAL(NMSGS, nop->nmsgs_received());
}
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