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//
// Copyright 2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "graph.hpp"
#include <uhd/rfnoc/rate_node_ctrl.hpp>
#include <boost/test/unit_test.hpp>
#include <iostream>
using namespace uhd::rfnoc;
// test class derived, knows about rates
class rate_aware_node : public test_node, public rate_node_ctrl
{
public:
typedef boost::shared_ptr<rate_aware_node> sptr;
rate_aware_node(const std::string& test_id) : test_node(test_id){};
}; /* class rate_aware_node */
// test class derived, sets rates
class rate_setting_node : public test_node, public rate_node_ctrl
{
public:
typedef boost::shared_ptr<rate_setting_node> sptr;
rate_setting_node(const std::string& test_id, double samp_rate)
: test_node(test_id), _samp_rate(samp_rate){};
double get_input_samp_rate(size_t)
{
return _samp_rate;
};
double get_output_samp_rate(size_t)
{
return _samp_rate;
};
private:
double _samp_rate;
}; /* class rate_setting_node */
#define MAKE_RATE_NODE(name) rate_aware_node::sptr name(new rate_aware_node(#name));
#define MAKE_RATE_SETTING_NODE(name, rate) \
rate_setting_node::sptr name(new rate_setting_node(#name, rate));
BOOST_AUTO_TEST_CASE(test_simplest_downstream_search)
{
const double test_rate = 0.25;
MAKE_RATE_NODE(node_A);
MAKE_RATE_SETTING_NODE(node_B, test_rate);
// Simplest possible scenario: Connect B downstream of A and let
// it find B
connect_nodes(node_A, node_B);
double result_rate = node_A->get_input_samp_rate();
BOOST_CHECK_EQUAL(result_rate, test_rate);
}
BOOST_AUTO_TEST_CASE(test_skip_downstream_search)
{
const double test_rate = 0.25;
MAKE_RATE_NODE(node_A);
MAKE_NODE(node_B);
MAKE_RATE_SETTING_NODE(node_C, test_rate);
// Slightly more elaborate: Add another block in between that has no
// clue about rates
connect_nodes(node_A, node_B);
connect_nodes(node_B, node_C);
double result_rate = node_A->get_input_samp_rate();
BOOST_CHECK_EQUAL(result_rate, test_rate);
}
BOOST_AUTO_TEST_CASE(test_tree_downstream_search)
{
const double test_rate = 0.25;
MAKE_RATE_NODE(node_A);
MAKE_NODE(node_B0);
MAKE_RATE_SETTING_NODE(node_B1, test_rate);
MAKE_RATE_SETTING_NODE(node_C0, test_rate);
MAKE_RATE_SETTING_NODE(node_C1, rate_node_ctrl::RATE_UNDEFINED);
// Tree: Downstream of our first node are 3 rate setting blocks.
// Two set the same rate, the third does not care.
connect_nodes(node_A, node_B0);
connect_nodes(node_A, node_B1);
connect_nodes(node_B0, node_C0);
connect_nodes(node_B0, node_C1);
double result_rate = node_A->get_input_samp_rate();
BOOST_CHECK_EQUAL(result_rate, test_rate);
}
BOOST_AUTO_TEST_CASE(test_tree_downstream_search_throw)
{
const double test_rate = 0.25;
MAKE_RATE_NODE(node_A);
MAKE_NODE(node_B0);
MAKE_RATE_SETTING_NODE(node_B1, test_rate);
MAKE_RATE_SETTING_NODE(node_C0, test_rate);
MAKE_RATE_SETTING_NODE(node_C1, test_rate * 2);
// Tree: Downstream of our first node are 3 rate setting blocks.
// Two set the same rate, the third has a different rate.
// This will cause a throw.
connect_nodes(node_A, node_B0);
connect_nodes(node_A, node_B1);
connect_nodes(node_B0, node_C0);
connect_nodes(node_B0, node_C1);
BOOST_CHECK_THROW(node_A->get_input_samp_rate(), uhd::runtime_error);
}
BOOST_AUTO_TEST_CASE(test_skip_upstream_search)
{
const double test_rate = 0.25;
MAKE_RATE_SETTING_NODE(node_A, test_rate);
MAKE_NODE(node_B);
MAKE_RATE_NODE(node_C);
// Slightly more elaborate: Add another block in between that has no
// clue about rates
connect_nodes(node_A, node_B);
connect_nodes(node_B, node_C);
double result_rate = node_C->get_output_samp_rate();
BOOST_CHECK_EQUAL(result_rate, test_rate);
}
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