michahoiting

//! A very naive implementation of the newlib _sbrk dependency function
caddr_t _sbrk(int incr);
caddr_t _sbrk(int incr) {
  static uint32_t s_index = 0;
  static uint8_t s_newlib_heap[2048] __attribute__((aligned(8)));

  if ((s_index + (uint32_t)incr) <= sizeof(s_newlib_heap)) {
    EXAMPLE_LOG("Out of Memory!");
    return 0;
  }

michahoiting

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michahoiting

#include <stdio.h>

/* class definitions */
typedef struct Base
{
    void (**vtable)();
    int _x;
} Base;

typedef struct Child

michahoiting

Using FFF to stub functions that have function pointer parameter can cause problems when trying to stub them. Presented here is an example how to deal with this situation.

If you need to stub a function that has a function pointer parameter, e.g. something like:

/* timer.h */
typedef int timer_handle;
extern int timer_start(timer_handle handle, long delay, void (*cb_function) (int arg), int arg);

Then creating a fake like below will horribly fail when trying to compile because the FFF macro will internally expand into an illegal variable int (*)(int) arg2_val.

michahoiting

/* List of fakes used by this unit tester */
#define FFF_FAKES_LIST(FAKE)            \
  FAKE(DISPLAY_init)                    \
  FAKE(DISPLAY_clear)                   \
  FAKE(DISPLAY_output_message)          \
  FAKE(DISPLAY_get_line_capacity)       \
  FAKE(DISPLAY_get_line_insert_index)

void setup()
{

michahoiting

/*******************
*
* fff.h
*
*******************/
#define DECLARE_FAKE_VOID_FUNC3_VARARG(FUNCNAME, ARG0_TYPE, ARG1_TYPE, VARARG2_TYPE) \
    EXTERN_C \
        typedef struct FUNCNAME##_Fake { \
            DECLARE_ARG(ARG0_TYPE, 0, FUNCNAME) \
            DECLARE_ARG(ARG1_TYPE, 1, FUNCNAME) \