Files
MicrOBU/microbu-esp32c5/external/vanetza-idf/vanetza/dcc/tests/limeric_budget.cpp
T
Ashin Walpola 0e9525162d Keep the colleague's microbu-esp32c5 tree in this repository
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but
that tree was gitignored, so a clone of this repository could not build the
firmware it ships. It is now committed here as ordinary files in its own
folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP
bridge's signature verification (--trust) used on the bench. Nothing is
fetched from or pushed to the colleague's repository; this repository and
its remotes carry everything. The folder's own .gitignore keeps build output,
downloaded components and private key material out, as it did there; the
committed file set is identical to that repository's tracked files.

The ESP32-C5 is still flashed from obu-firmware/, which only takes
vanetza-idf from microbu-esp32c5/, so the two stay separate folders.
FLASHING.md says how to take a newer version of the colleague's tree (copy
it over the folder, rebuild, test, commit).
2026-09-23 17:46:40 +02:00

93 lines
2.6 KiB
C++

#include <gtest/gtest.h>
#include <vanetza/common/manual_runtime.hpp>
#include <vanetza/dcc/duty_cycle_permit.hpp>
#include <vanetza/dcc/limeric_budget.hpp>
#include <chrono>
using namespace vanetza;
using namespace vanetza::dcc;
using std::chrono::milliseconds;
using std::chrono::microseconds;
namespace std { namespace chrono {
template<typename Rep, typename Period>
void PrintTo(const duration<Rep, Period> d, std::ostream* os)
{
duration<double, std::milli> ms = d;
*os << ms.count() << " ms";
}
}}
class LimericBudgetTest : public ::testing::Test
{
public:
LimericBudgetTest() : budget(dcp, runtime) {}
class MockDutyCyclePermit : public vanetza::dcc::DutyCyclePermit
{
public:
MockDutyCyclePermit() : m_duty_cycle(0.02) {}
UnitInterval permitted_duty_cycle() const { return m_duty_cycle; }
void permitted_duty_cycle(double dc) { m_duty_cycle = UnitInterval { dc }; }
private:
UnitInterval m_duty_cycle;
};
ManualRuntime runtime;
MockDutyCyclePermit dcp;
LimericBudget budget;
};
TEST_F(LimericBudgetTest, init)
{
EXPECT_EQ(milliseconds(25), budget.interval());
EXPECT_EQ(milliseconds(0), budget.delay());
}
TEST_F(LimericBudgetTest, notify)
{
budget.notify(milliseconds(2));
EXPECT_EQ(milliseconds(100), budget.interval());
EXPECT_EQ(budget.interval(), budget.delay());
runtime.trigger(milliseconds(60));
EXPECT_EQ(milliseconds(100), budget.interval());
EXPECT_EQ(milliseconds(40), budget.delay());
runtime.trigger(milliseconds(60));
EXPECT_EQ(milliseconds(0), budget.delay());
budget.notify(microseconds(100));
EXPECT_EQ(milliseconds(25), budget.interval()); // lower limit
budget.notify(milliseconds(30));
EXPECT_EQ(milliseconds(1000), budget.interval()); // upper limit
}
TEST_F(LimericBudgetTest, update)
{
budget.update(); // usually this should be called by Limeric's hook directly
EXPECT_EQ(milliseconds(25), budget.interval()); // no previous transmission duration known yet
budget.notify(milliseconds(1));
EXPECT_EQ(milliseconds(50), budget.interval());
runtime.trigger(milliseconds(10));
EXPECT_EQ(milliseconds(40), budget.delay());
dcp.permitted_duty_cycle(0.01); // half of previous duty cycle
budget.update();
EXPECT_EQ(milliseconds(90), budget.interval());
EXPECT_EQ(milliseconds(80), budget.delay());
runtime.trigger(milliseconds(62));
dcp.permitted_duty_cycle(0.04);
budget.update();
EXPECT_EQ(milliseconds(77), budget.interval());
EXPECT_EQ(milliseconds(5), budget.delay());
}