I’m trying to implement unit testing for my Raspberry Pi Pico code and keep running into trouble.
I’m using the earlephilhower Arduino-Pico core and the Unity test framework
My platformio.ini file looks like this
[env:pico]
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
board = pico
test_framework = unity
framework = arduino
board_build.core = earlephilhower
board_build.filesystem_size = 0.5m
monitor_speed = 115200
My main main_pico_tests.hpp file looks like this
#include <Arduino.h>
#include <stdio.h>
#include <stdlib.h>
#include <LittleFS.h>
#include "pico/stdlib.h"
#include "pico/multicore.h"
#include "hardware/flash.h"
#include "hardware/adc.h"
#include "hardware/irq.h"
void pauseOtherCore();
//Resume Other Core
void resumeTheOtherCore();
//Restart Core1
void restartCore();
//Send data to other core via FIFO
bool sendToOtherCore(uint32_t data);
and my main.cpp code looks like this:
#include "main_pico_tests.hpp"
volatile bool settingsFileLock = false; // shared lock variable for settings file
//Multicore functions
//Pause Other Core
void pauseOtherCore(){
rp2040.idleOtherCore();
}
//Resume Other Core
void resumeTheOtherCore(){
rp2040.resumeOtherCore();
}
//Restart Core1
void restartCore(){
rp2040.restartCore1();
}
//Send data to other core via FIFO
bool sendToOtherCore(uint32_t data){
return rp2040.fifo.push_nb(data);
}
//Send data via Serial USB
void SerialSend(uint32_t data){
Serial.println(data);
}
void waitUntillFileIsUnlocked(bool fileLock){
while(fileLock){
//Wait untill file is unlocked
}
}
//LittleFS functions
//Open file to read or write
File openFile(String fileName, bool write){
if(fileName == ""){
Serial.println("No filename given");
}
else if(!LittleFS.exists(fileName)){
Serial.println("File does not exist");
}
else if(LittleFS.exists(fileName)){
while(settingsFileLock){
//Wait untill file is unlocked
}
settingsFileLock = true;
//Open file
LittleFS.begin();
File file = LittleFS.open(fileName, write ? "w" : "r");
//Check if file opened
if (!file) {
Serial.println("Failed to open file for reading");
}
else if(file){
Serial.println("File opened");
return file;
}
}
else{
Serial.println("Something went wrong");
}
return File();
}
//Close file
void closeFile(File file, String fileName){
//Close file
file.close();
//Unlock file
settingsFileLock = false;
LittleFS.end();
}
//Read file
String readFile(String fileName){
File file = openFile(fileName, false);
String fileContent = "";
if(file){
while(file.available()){
fileContent += (char)file.read();
}
}
closeFile(file, fileName);
return fileContent;
}
//Overwrite file with LittleFS
void writeFile(String fileName, String data){
File file = openFile(fileName, true);
if(file){
file.print(data);
}
closeFile(file, fileName);
}
//Create file with LittleFS
void createFile(String fileName){
File file = openFile(fileName, true);
closeFile(file, fileName);
}
// First core code
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
delay(5000);
//Should start by transmitting the firmware version to the raspberry pi
}
void loop() {
// put your main code here, to run repeatedly:
//Check if there is a message from the other core
if (rp2040.fifo.available() > 0)
{
uint32_t data = rp2040.fifo.pop();
}
//Serial recieve
if (Serial.available() > 0) {
uint32_t data = Serial.read();
}
}
// Second core code
void setup1() {
//Second core setup
// put your setup code here, to run once:
}
void loop1() {
// Second core loop
// put your main code here, to run repeatedly:
//Check if there is a message from the other core
if (rp2040.fifo.available() > 0)
{
uint32_t data = rp2040.fifo.pop();
}
}
The code should be able to store, read and write files with LittleFS, while also being able to (in the future) communicate between the two cores.
Now, i have tried creating a unit test for communication, where the test_pico.cpp looks like this
#include "unity.h"
#include "main_pico_tests.hpp"
// Define setup and teardown functions if needed
void setUp(void)
{
// Add any setup code here
}
void tearDown(void)
{
// Add any teardown code here
}
// Define your test functions
void test_sendToOtherCore()
{
// Test case 1: Sending a valid data value
uint32_t data = 123;
TEST_ASSERT_TRUE(sendToOtherCore(data));
// Test case 2: Sending a zero value
data = 0;
TEST_ASSERT_TRUE(sendToOtherCore(data));
// Test case 3: Sending a negative value
data = -1;
TEST_ASSERT_TRUE(sendToOtherCore(data));
// Add more test cases as needed
}
int main(void)
{
UNITY_BEGIN();
RUN_TEST(test_sendToOtherCore);
// Add more test functions here
UNITY_END();
return 0;
}
The code compiles fine, and uploads to the pico, but when i try to run the tests i get this error message
* Executing task in folder OctoBox: C:\Users\betal\.platformio\penv\Scripts\platformio.exe test --upload-port COM6 --test-port COM6
Verbosity level can be increased via `-v, -vv, or -vvv` option
Collected 1 tests
Processing * in pico environment
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Building & Uploading...
c:/users/betal/.platformio/packages/toolchain-rp2040-earlephilhower/bin/../lib/gcc/arm-none-eabi/12.3.0/../../../../arm-none-eabi/bin/ld.exe: .pio\build\pico\test\test_pico.cpp.o: in function `_Z20test_sendToOtherCorev':
test_pico.cpp:(.text._Z20test_sendToOtherCorev+0x4): undefined reference to `_Z15sendToOtherCorem'
c:/users/betal/.platformio/packages/toolchain-rp2040-earlephilhower/bin/../lib/gcc/arm-none-eabi/12.3.0/../../../../arm-none-eabi/bin/ld.exe: test_pico.cpp:(.text._Z20test_sendToOtherCorev+0x16): undefined reference to `_Z15sendToOtherCorem'
c:/users/betal/.platformio/packages/toolchain-rp2040-earlephilhower/bin/../lib/gcc/arm-none-eabi/12.3.0/../../../../arm-none-eabi/bin/ld.exe: test_pico.cpp:(.text._Z20test_sendToOtherCorev+0x28): undefined reference to `_Z15sendToOtherCorem'
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\pico\firmware.elf] Error 1
Uploading stage has failed, see errors above. Use `pio test -vvv` option to enable verbose output.
--------------------------------------------------------------------------------------------------------------------- pico:* [ERRORED] Took 3.14 seconds ---------------------------------------------------------------------------------------------------------------------
================================================================================================================================== SUMMARY ==================================================================================================================================
Environment Test Status Duration
------------- ------ -------- ------------
pico * ERRORED 00:00:03.140
================================================================================================================= 1 test cases: 0 succeeded in 00:00:03.140 =================================================================================================================
* The terminal process "C:\Users\betal\.platformio\penv\Scripts\platformio.exe 'test', '--upload-port', 'COM6', '--test-port', 'COM6'" terminated with exit code: 1.
* Terminal will be reused by tasks, press any key to close it.
What am i doing wrong?
Thank you!
