On Target Unit testing for STM32L0x3 using IAR

I want to have a test frame work in my IAR Project. The processor is an STM32L0.

What I've tried:

• http://ift.tt/Tu5QLq followed the turoial at : http://ift.tt/2dBXjB8 Didn't work because there is only 64K Flash & 8K RAM

  

  and its not enough for this framework

• http://ift.tt/2dBX3lP I tried to intigrate into IAR Embedded workbench but had a lot of compiler errors also not enough space so I tried to run it on my Desktop. This doesn't work because it has too many Hardware dependencies in the code..

• Next I tried to just make "Pseudo" unit testing by putting a test routine at boot of the device which can be switched on and off by precompiler directives.

Like this (not finished):

#if PREFORM_TESTS
    TEST_run();
#endif  

And then with files:

#include "testAll.h"
#include "testEvent.h"
#include "stm32l0xx_hal.h"

void TEST_run(){
  TEST_EVENT_run();
}
void assert_failed(uint8_t* file, uint32_t line){
  while(1);  
}

#include "testEvent.h"
#include "testAll.h"
#include "event.h"
#include "stm32l0xx_hal.h"

void test_add_event();

void TEST_EVENT_run(){
    test_add_event();
}

void test_add_event(){
  ASSERT(1); 
}

How can I run Unit Tests on my STM32L0x3?