px4-firmware/EKF/tests/ringbuffer/ringbuffer.cpp

122 lines
4.1 KiB
C++

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/**
* @file ringbuffer.cpp
* Test routines for the EKF ringbuffer
*
* @author Roman Bast <bapstroman@gmail.com>
*
*/
#include <stdint.h>
#include <cassert>
#include "../../RingBuffer.h"
extern "C" __EXPORT int ringbuffer_main(int argc, char *argv[]);
struct sample {
uint64_t time_us;
float data[3];
};
int ringbuffer_main(int argc, char *argv[])
{
sample x;
x.time_us = 1000000;
x.data[0] = x.data[1] = x.data[2] = 1.5f;
sample y;
y.time_us = 2000000;
y.data[0] = y.data[1] = y.data[2] = 3.0f;
sample z;
z.time_us = 3000000;
z.data[0] = z.data[1] = z.data[2] = 4.0f;
// Test1: false buffer allocation
bool initialised = false;
RingBuffer<sample> buffer;
initialised = buffer.allocate(-1);
assert(initialised == false);
initialised = buffer.allocate(0);
assert(initialised == false);
// Test2: good initialisation
initialised = buffer.allocate(3);
assert(initialised == true);
// Test3: pushing data into ringbuffer
buffer.push(x);
assert(buffer.get_newest().time_us == x.time_us);
assert(buffer.get_oldest().time_us == 0);
buffer.push(y);
buffer.push(z);
assert(buffer.get_newest().time_us == z.time_us);
assert(buffer.get_oldest().time_us == x.time_us);
// Test3: Retreiving data from the buffer
sample pop = {};
// this should return false, because there is no data older than t = 0
assert(buffer.pop_first_older_than(0, &pop) == false);
assert(buffer.pop_first_older_than(x.time_us + 1 , &pop) == true);
assert(pop.time_us == x.time_us);
assert(buffer.pop_first_older_than(y.time_us + 100 , &pop) == true);
assert(pop.time_us == y.time_us);
assert(buffer.pop_first_older_than(z.time_us + 100 , &pop) == true);
assert(pop.time_us == z.time_us);
// Test 4: Bigger buffer, redo Test3
buffer.allocate(10);
buffer.push(x);
assert(buffer.get_newest().time_us == x.time_us);
assert(buffer.get_oldest().time_us == 0);
buffer.push(y);
buffer.push(z);
assert(buffer.get_newest().time_us == z.time_us);
// this should return false, because the diff to 0 is too large
// buffer will not accept measurement will is older than 0.5 seconds
assert(buffer.pop_first_older_than(600000, &pop) == false);
assert(buffer.pop_first_older_than(x.time_us + 1 , &pop) == true);
assert(pop.time_us == x.time_us);
assert(buffer.pop_first_older_than(y.time_us + 100 , &pop) == true);
assert(pop.time_us == y.time_us);
assert(buffer.pop_first_older_than(z.time_us + 100 , &pop) == true);
assert(pop.time_us == z.time_us);
return 0;
}