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